Operation & Safety Manual. Model 500RTS. November 14, 2007
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1 Operation & Safety Manual Model 500RTS November 14, 2007
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3 FOREWORD FOREWORD This manual is a very important tool! Keep it with the machine at all times. The purpose of this manual is to provide owners, users, operators, lessors, and lessees with the precautions and operating procedures essential for the safe and proper machine operation for its intended purpose. It is important to stress proper machine usage at all times. All information in this manual must be read and understood before any attempt is made to operate the machine. Because the manufacturer has no direct control over machine operation and application, proper safety practices are the responsibility of the owners, users, operators, lessors, and lessees. All instructions in this manual are based upon the use of the machine under proper operating conditions, with no deviations from the original design. Any alteration or modification of the machine is strictly forbidden without written approval from JLG Industries, Inc. Due to continuous product improvements, JLG Industries, Inc. reserves the right to make specification changes without prior notification. Contact JLG Industries, Inc. for updated information. Other Publications Available: Service and Maintenance Manual Illustrated Parts Manual JLG Lift a
4 FOREWORD SAFETY ALERT SYMBOLS AND SAFETY SIGNAL WORDS This is the Safety Alert Symbol. It is used to alert you to the potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death The Safety Alert Symbol will be used with the appropriate Safety Signal Word of DANGER WARNING or CAUTION to a potential hazard and designate a level of seriousness. The Safety Signal Words are inserted throughout this manual in Black/White. On the machine, the Safety Signal Words will have either a Red, Orange, or Yellow background as part of a safety sign or decal. The DANGER, WARNING, and CAUTION Safety Signal Words, definitions, and associated colors are as follows: INDICATES AN IMMINENTLY HAZARDOUS SITUATION WHICH, IF NOT AVOIDED, WILL RESULT IN SERIOUS INJURY OR DEATH. THIS SIGNAL WORD IS USED IN THE MOST EXTREME CASES. WHEN INSTALLED ON THE MACHINE, THIS SIGNAL WORD WILL HAVE A RED BACKGROUND AS PART OF A DECAL. INDICATES A POTENTIALITY HAZARDOUS SITUATION WHICH, IF NOT AVOIDED, COULD RESULT IN SERIOUS INJURY OR DEATH. WHEN INSTALLED ON THE MACHINE, THIS SIGNAL WORD WILL HAVE AN ORANGE BACKGROUND AS PART OF A DECAL. INDICATES A POTENTIALITY HAZARDOUS SITUATION WHICH IF NOT AVOIDED, MAY RESULT IN MINOR OR MODERATE INJURY. IT MAY ALSO BE USED TO ALERT AGAINST UNSAFE PRACTICES. WHEN INSTALLED ON THE MACHINE, THIS SIGNAL WORD WILL HAVE A YELLOW BACKGROUND AS PART OF A DECAL. The IMPORTANT Safety Signal Word may also appear in this manual or on the machine. This Safety Signal Word typically will not appear with the Safety Alert Symbol, but contains important information that must be followed for safe and proper operation, The IMPORTANT Safety Signal Word definition and associated color is as follows. INDICATES PROCEDURES ESSENTIAL FOR SAFE OPERATION AND WHICH, IF NOT FOLLOWED, MAY RESULT IN A MACHINE MAL- FUNCTIONED DAMAGE. WHEN INSTALLED IN A MACHINE, THIS SIGNAL WORD WILL HAVE A GREEN BACKGROUND AS PART OF A DECAL. b JLG Lift
5 FOREWORD ALL SAFETY-RELATED BULLETINS MUST BE ACCOMPLISHED ON THIS PRODUCT. JLG INDUSTRIES, INC. MAY HAVE ISSUED SAFETY- RELATED BULLETINS FOR THIS JLG PRODUCT. CONTACT JLG INDUSTRIES, INC. OR THE LOCAL AUTHORIZED JLG DEALER FOR INFORMATION REGARDING SAFETY-RELATED BULLETINS WHICH MAY HAVE BEEN ISSUED FOR THIS PRODUCT. NOTICE FOR THE PURPOSE OF RECEIVING SAFETY-RELATED BULLETINS, IT IS IMPORTANT THAT THE CURRENT OWNER OF THIS UNIT ENSURES JLG INDUSTRIES, INC. HAS UPDATED OWNERSHIP INFORMATION. CONTACT JLG INDUSTRIES, INC. TO ENSURE THAT THE CURRENT OWNER RECORDS ARE UPDATED AND ACCURATE. NOTICE JLG INDUSTRIES, INC. MUST BE NOTIFIED IMMEDIATELY IN ALL INSTANCES WHERE JLG PRODUCTS HAVE BEEN INVOLVED IN AN ACCIDENT INVOLVING BODILY INJURY OR DEATH OF PERSONNEL OR WHEN SUBSTANTIAL DAMAGE HAS OCCURRED TO PERSONAL PROPERTY OR THE JLG PRODUCT. FOR : Accident Reporting Product Safety Publications Current Owner Updates Questions Regarding Product Safety Standards and Regulations Compliance Information Questions Regarding Special Product Applications Questions Regarding Product Modifications CONTACT : Product Safety and Reliability Department JLG Industries, Inc. 1 JLG Drive McConnellsburg, PA Toll Free: JLG-SAFE ProductSafety@JLG.com JLG Lift c
6 FOREWORD REVISION LOG Original Issue - January 3, Revised (Added Pro 65 page) - April 19, 2000 Revised - April 19, 2002 Revised - August 19, 2002 Revised - December 5, 2002 Revised - April 16, 2004 Added Manual Part Number to Foreword - - August 1, 2004 Revised - - November 14, 2007 d JLG Lift
7 TABLE OF CONTENTS SUBJECT - SECTION, PARAGRAPH TABLE OF CONTENTS TABLE OF CONTENTS PAGE NO. SECTION - FOREWORD SECTION 1 - SAFETY PRECAUTIONS 1.1 General Pre-operation Operation Towing, Lifting, and Hauling Additional Hazards / Safety SECTION SECTION SECTION SECTION SECTION 2 - PREPARATION AND INSPECTION 2.1 General Preparation for Use Delivery and Periodic Inspection Daily Walk-Around Inspection Daily Functional Check Lockout Cylinder Check (If Equipped) Dual Fuel System Torque Requirements USER RESPONSIBILITIES AND MACHINE CONTROL 3.1 General Personnel Training Operating Characteristics and Limitations Controls and Indicators MACHINE OPERATION 4.1 Description General Engine Operation Raising and Lowering (Lifting) Traversing Platform (Optional) Steering Traveling (Driving) Parking and Stowing Platform Loading Safety Props Machine Tie Down Towing EMERGENCY PROCEDURES 5.1 General Emergency Towing Procedures Emergency Controls and Their Locations Emergency Operation Incident Notification INSPECTION AND REPAIR LOG JLG Sizzor i
8 TABLE OF CONTENTS (Continued) LIST OF FIGURES FIGURE NO. TITLE PAGE NO Daily Walk-Around Inspection Diagram Walk-Around Inspection Points (Sheet 1 of 3) Walk-Around Inspection Points (Sheet 2 of 3) Walk-Around Inspection Points (Sheet 3 of 3) Lubrication Diagram Torque Chart Ground Control Station Platform Control Station Control Panel Symbols Decal Location - Right Side (Sheet 1 of 2) Decal Location - Left Side, Front and Rear (Sheet 2 of 2) Grade and Sideslope Drive Hub Disconnect Drive Hub Connect LIST OF TABLES TABLE NO. TITLE PAGE NO. 1-1 Minimum Safe Approach Distances (M.S.A.D.) Lubrication Chart Inspection and Repair Log ii JLG Sizzor
9 SECTION 1 - SAFETY PRECAUTIONS SECTION 1. SAFETY PRECAUTIONS 1.1 GENERAL This section outlines the necessary precautions for proper and safe machine usage and maintenance. In order to promote proper machine usage, it is mandatory that a daily routine is established based on the content of this manual. A maintenance program, using the information provided in this manual and the Service and Maintenance Manual, must also be established by a qualified person and must be followed to ensure that the machine is safe to operate. The owner/user/operator/lessor/lessee of the machine should not accept operating responsibility until this manual has been read, training is accomplished, and operation of the machine has been completed under the supervision of an experienced and qualified operator. These sections contain the responsibilities of the owner, user, operator, lessor, and lessee concerning safety, training, inspection, maintenance, application, and operation. If there are any questions with regard to safety, training, inspection, maintenance, application, and operation, please contact JLG Industries, Inc. ( JLG ). FAILURE TO COMPLY WITH THE SAFETY PRECAUTIONS LISTED IN THIS MANUAL COULD RESULT IN MACHINE DAMAGE, PROP- ERTY DAMAGE, PERSONAL INJURY OR DEATH. 1.2 PRE-OPERATION Operator Training and Knowledge The Operators and Safety Manual must be read in its entirety before operating the machine. For clarification, questions, or additional information regarding any portions of this manual, contact JLG Industries, Inc. Allow only those authorized and qualified personnel to operate the machine who have demonstrated that they understand the safe and proper operation and maintenance of the unit. Read, understand, and obey all DANGERS, WARN- INGS, CAUTIONS, and operating instructions on the machine and in this manual. Ensure that the machine is to be used in a manner which is within the scope of its intended application as determined by JLG. All operating personnel must be familiar with the emergency controls and emergency operation of the machine as specified in this manual. Read, understand, and obey all applicable employer, local, and governmental regulations as they pertain to your utilization and application of the machine. Workplace Inspection Precautions to avoid all hazards in the work area must be taken by the user before operation of the machine. Do not operate or raise the platform from a position on trucks, trailers, railway cars, floating vessels, scaffolds or other equipment unless the application is approved in writing by JLG. Before operation, check work area for overhead hazards such as electric lines, bridge cranes, and other potential overhead obstructions. Check floor surfaces for holes, bumps, drop-offs, obstructions, debris, concealed holes, and other potential hazards. Check the work area for hazardous locations. Do not operate the machine in hazardous environments unless approved for that purpose by JLG. Ensure that the ground conditions are adequate to support the maximum tire load indicated on the tire load decals located on the chassis adjacent to each wheel. Do not operate the machine when wind conditions exceed 28 mph (12.5 m/s). This machine can be operated in nominal ambient temperatures of 0 o F to 104 o F (-20 o C to 40 o C). Consult JLG to optimize operation outside of this temperature range. An operator must not accept operating responsibilities until adequate training has been given by competent and authorized persons. Machine Inspection Do not operate this machine until the inspections and functional checks have been performed as specified in Section 2 of this manual JLG Sizzor 1-1
10 SECTION 1 - SAFETY PRECAUTIONS Do not operate this machine until it has been serviced and maintained according to the maintenance and inspection requirements as specified in the machine s Service and Maintenance Manual. Ensure all safety devices are operating properly. Modification of these devices is a safety violation. MODIFICATION OR ALTERATION OF AN AERIAL WORK PLAT- FORM SHALL BE MADE ONLY WITH PRIOR WRITTEN PERMIS- SION FROM THE MANUFACTURER Do not operate any machine on which the safety or instruction placards or decals are missing or illegible. Check the machine for modifications to original components. Ensure that any modifications have been approved by JLG. Avoid accumulation of debris on platform deck. Keep mud, oil, grease, and other slippery substances from footwear and platform deck. When two or more persons are in the platform, the operator shall be responsible for all machine operations. Always ensure that power tools are properly stowed and never left hanging by their cord from the platform work area. Do not assist a stuck or disabled machine by pushing or pulling except by pulling at the chassis tie-down lugs. Stow scissor arm assembly and shut off all power before leaving machine. Trip and Fall Hazards JLG Industries, Inc. recommends that all persons in the platform wear a full body harness with a lanyard attached to an authorized lanyard anchorage point while operating this machine. For further information regarding fall protection requirements on JLG products, contact JLG Industries, Inc. 1.3 OPERATION General Do not use the machine for any purpose other than positioning personnel, their tools, and equipment. Before operation, the user must be familiar with the machine capabilities and operating characteristics of all functions. Never operate a malfunctioning machine. If a malfunction occurs, shut down the machine. Remove the unit from service and notify the proper authorities. Do not remove, modify, or disable any safety devices. Never slam a control switch or lever through neutral to an opposite direction. Always return switch to neutral and stop before moving the switch to the next function. Operate controls with slow and even pressure. Hydraulic cylinders should never be left at end of travel (fully extended or fully retracted) before shutdown or for long periods of time. Always bump control in opposite direction slightly when function reaches end of travel. This applies both to machines in operation or in the stowed position. Do not allow personnel to tamper with or operate the machine from the ground with personnel in the platform, except in an emergency. Do not carry materials directly on platform railing unless approved by JLG. Prior to operation, ensure all gates are fastened and secured in their proper position. Identify the designated lanyard anchorage point(s) at the platform and securely attach the lanyard. Attach only one (1) lanyard per lanyard anchorage point. Keep both feet firmly positioned on the platform floor at all times. Never position ladders, boxes, steps, planks, or similar items on unit to provide additional reach for any purpose. Never use the scissor arm assembly to gain access to or leave the platform. 1-2 JLG Sizzor
11 SECTION 1 - SAFETY PRECAUTIONS Use extreme caution when entering or leaving platform. Ensure that the scissor arm assembly is fully lowered. Face the machine when entering or leaving the platform. Always maintain three point contact with the machine, using two hands and one foot or two feet and one hand at all times during entry and exit. Platform-to-structure transfers at elevated positions are discouraged. Where transfer is necessary, enter/exit through the gate only with the platform within 1 foot (0.3m) of a safe and secure structure. 100% tie-off is also required in this situation utilizing two lanyards. One lanyard must be attached to the platform with the second lanyard attached to the structure. The lanyard connected to the platform must not be disconnected until such time the transfer to the structure is safe and complete. Keep oil, mud, and slippery substances cleaned from footwear and the platform floor. Electrocution Hazards This machine is not insulated and does not provide protection from contact with an electrically charged conductor. Table 1-1.Minimum Safe Approach Distances (M.S.A.D.) Voltage Range (Phase to Phase) MINIMUM SAFE APPROACH DISTANCE in Feet (Meters) 0 to 300V AVOID CONTACT Over 300V to 50 KV 10 (3) Over 50KV to 200 KV 15 (5) Over 200 KV to 350 KV 20 (6) Over 350 KV to 500 KV 25 (8) Over 500 KV to 750 KV 35 (11) Over 750 KV to 1000 KV 45 (14) NOTE: This requirement shall apply except where employer, local or governmental regulations are more stringent. Maintain a clearance of at least 10 ft. (3m) between any part of the machine and its occupants, their tools, and their equipment from any electrical line or apparatus carrying up to 50,000 volts. One foot additional clearance is required for every additional 30,000 volts or less. DO NOT MANEUVER MACHINE OR PERSONNEL INSIDE PROHIB- ITED ZONE (MSAD). ASSUME ALL ELECTRICAL PARTS AND WIR- ING ARE ENERGIZED UNLESS KNOWN OTHERWISE. Tipping Hazards Ensure that the ground conditions are adequate to support the maximum tire load indicated on the tire load decals located on the chassis adjacent to each wheel. Do not travel on unsupported surfaces. The user should be familiar with the driving surface before driving. Do not exceed the allowable sideslope and grade while driving. Maintain safe clearance from electrical lines, apparatus, or any energized (exposed or insulated) parts in accordance with the Minimum Safe Approach Distance (MSAD) as specified in Table 1-1. Allow for machine movement and electrical line swaying. Do not elevate platform or drive with platform elevated while on or near a sloping, uneven, or soft surface. Ensure machine is positioned on a firm, level and uniformly supported surface before elevating platform or driving with the platform in the elevated position JLG Sizzor 1-3
12 SECTION 1 - SAFETY PRECAUTIONS Before driving on floors, bridges, trucks, and other surfaces, check allowable capacity of the surfaces. Never exceed the maximum work load as specified on the platform. Distribute loads evenly on platform floor. Keep all loads within the confines of the platform, unless authorized by JLG. Keep the chassis of the machine a minimum of 2 ft. (0.6m) from holes, bumps, drop-offs, obstructions, debris, concealed holes, and other potential hazards at the ground level. Never attempt to use the machine as a crane. Do not tie-off machine to any adjacent structure. Never attach wire, cable, or any similar items to platform. Do not operate the machine when wind conditions exceed 28 mph (12.5 m/s).unless otherwise specified on machine or accessory. Do not cover the platform sides or carry large surfacearea items in the platform when operating outdoors. The addition of such items increases the exposed wind area of the machine. Do not increase the platform size with unauthorized deck extensions or attachments. If scissor arm assembly or platform is caught so that one or more wheels are off the ground, all persons must be removed before attempting to free the machine. Use cranes, forklift trucks, or other appropriate equipment to stabilize machine and remove personnel. Crushing and Collision Hazards Approved head gear must be worn by all operating and ground personnel. Keep hands and limbs out of the scissor arm assembly during operation. Watch for obstructions around machine and overhead when driving. Check clearances above, on sides, and bottom of platform when lifting or lowering platform.. Keep non-operating personnel at least 6 ft. (1.8m) away from machine during all driving operations. Under all travel conditions, the operator must limit travel speed according to conditions of ground surface, congestion, visibility, slope, location of personnel, and other factors causing hazards of collision or injury to personnel. Be aware of stopping distances in all drive speeds. When driving in high speed, switch to low speed before stopping. Travel grades in low speed only. Do not use high speed drive in restricted or close quarters or when driving in reverse. Exercise extreme caution at all times to prevent obstacles from striking or interfering with operating controls and persons in the platform. Ensure that operators of other overhead and floor level machines are aware of the aerial work platform s presence. Disconnect power to overhead cranes. Barricade floor area if necessary. Avoid operating over ground personnel. Warn personnel not to work, stand, or walk under a raised platform. Position barricades on floor as necessary. 1.4 TOWING, LIFTING, AND HAULING Never allow personnel in platform while towing, lifting, or hauling. This machine should not be towed, except in the event of emergency, malfunction, power failure, or loading/ unloading. Refer to Section 6 for emergency towing procedures. Ensure platform is fully retracted and completely empty of tools prior to towing, lifting or hauling. When lifting machine with a forklift, position forks only at designated areas of the machine. Lift with a forklift of adequate capacity. Refer to Section 4 for lifting information. During operation, keep all body parts inside platform railing. Always post a lookout when driving in areas where vision is obstructed. 1.5 ADDITIONAL HAZARDS / SAFETY Do not use machine as a ground for welding. When performing welding or metal cutting operations, precautions must be taken to protect the chassis from direct exposure to weld and metal cutting spatter. Do not refuel the machine with the engine running (where applicable). Battery fluid is highly corrosive. Avoid contact with skin and clothing at all times. Charge batteries only in a well ventilated area. 1-4 JLG Sizzor
13 SECTION 2 - PREPARATION AND INSPECTION SECTION 2. PREPARATION AND INSPECTION 2.1 GENERAL This section provides the necessary information needed by those personnel that are responsible to place the machine in operation readiness, and lists checks that are performed prior to use of the machine. It is important that the information contained in this section be read and understood before any attempt is made to operate the machine. Ensure that all the necessary inspections have been completed successfully before placing the machine into service. These procedures will aid in obtaining maximum service life and safe operation. SINCE THE MACHINE MANUFACTURER HAS NO DIRECT CON- TROL OVER THE FIELD INSPECTION AND MAINTENANCE, SAFETY IS THE RESPONSIBILITY OF THE OWNER/OPERATOR. 2.2 PREPARATION FOR USE 1. Before a new machine is put into operation it must be carefully inspected for any evidence of damage resulting from shipment and inspected periodically thereafter, as outlined in paragraph 2-3, Delivery and Periodic Inspection. The unit should be thoroughly checked for hydraulic leaks during initial start-up and run. A check of all components should be made to assure their security. 2. All preparations necessary to place the machine in operation readiness status are the responsibility of management personnel. Preparation requires good common sense, (i.e. lift works smoothly and brakes operate properly) coupled with a series of visual inspections. The mandatory requirements are given in paragraph 2-4, Daily Walk Around Inspection. 3. It should be assured that the items appearing in the Delivery and Periodic Inspection and Functional Check are complied with prior to putting the machine into service. 2.3 DELIVERY AND PERIODIC INSPECTION NOTE: This machine requires periodic safety and maintenance inspections by a JLG Dealer. A decal on the frame provides a place to record (stamp) inspection dates. Check decal and notify dealer if inspection is overdue. The following checklist provides a systematic inspection to assist in detecting defective, damaged, or improperly installed parts. The checklist denotes the items to be inspected and conditions to examine. Periodic inspection shall be performed monthly or more often when required by environment, severity, and frequency of usage. Handrail Assemblies Properly installed; no loose or missing parts; no visible damage. Platform Assembly No visible damage; free of dirt and debris. Sizzor Arms No visible damage, abrasions and/or distortions. Electrical Cable No visible damage; properly secured. Pivot Pins No loose or missing retaining hardware; no damage or wear to pin heads which would cause pin to rotate; no evidence of pin or bushing wear. Lift Cylinder No rust, nicks, scratches or foreign material on piston rod. No leakage. Evidence of proper lubrication. Frame No visible damage; loose or missing hardware (top and underside). Drive Hubs Check oil level in drive hub by removing pipe plug and feeling for oil level. (Contact service personnel for assistance if needed.) NOTE: Torque Hubs should be one-half full of lubricant. Tire and Wheel Assemblies No loose or missing lug nuts; no visible damage Sliding Wear Pad Blocks No excessive wear; adequate lubrication JLG Sizzor 2-1
14 SECTION 2 - PREPARATION AND INSPECTION Hydraulic Oil Supply NOTE: Prior to checking the hydraulic oil level, operate the machine through one complete cycle of the lift function (full up and down). Failure to do so will result in an incorrect oil level reading on the hydraulic tank. Operate hydraulic systems through one complete cycle before checking oil level in hydraulic oil tank. Oil should be visible in ADD sight window on hydraulic oil tank. If oil is not visible, add oil until oil is visible in both ADD and FULL sight windows on tank. Do not overfill tank. Steer Cylinder No rust, nicks, scratches or foreign material on piston rod; no leakage. Steer Linkage No loose or missing parts; no visible damage. Steer Spindle Assemblies No excessive wear; no damage. Control Boxes (Console and Ground) Switches operable; no visible damage; placards secure and legible. Hand controller operable; no visible damage. Battery Proper electrolyte level; cable connections tight; no visible damage; no corrosion at battery cable connections. Engine Engine oil level - full mark on dipstick; filler cap secure; air filter secure. Hydraulic Pump and Valves No visible damage; no evidence of leakage; units secure. Platform Placards No visible damage; placards secure and legible. Lock-Out Cylinders (If Equipped) No rust, nicks, scratches or foreign material on piston rod; no leakage. Leveling Jacks (If Equipped) No rust, nicks, scratches or foreign material on piston rod; no leakage. Traversing Platform (If Equipped) No loose or missing parts; no visible damage; free of dirt and debris. 2.4 DAILY WALK-AROUND INSPECTION It is the user s responsibility to inspect the machine before the start of each workday. It is recommended that each user inspect the machine before operation, even if the machine has already been put into service under another user. This Daily Walk-Around Inspection is the preferred method of inspection. In addition to the Daily Walk-Around Inspection, be sure to include the following as part of the daily inspection: Overall Cleanliness Check all standing surfaces for oil, fuel and hydraulic oil spillage and foreign objects. Ensure overall cleanliness. Placards Keep all information and operating placards clean and unobstructed. Cover when spray painting or shot blasting to protect legibility. Operators and Safety Manual Ensure a copy of this manual is enclosed in the manual storage box. Machine Log Ensure a machine operating record or log is kept. Check to see that it is current and that no entries have been left uncleared, leaving machine in an unsafe condition for operation. Daily Lubrication For those items pointed out in the Daily Walk-Around Inspection requiring daily lubrication, refer to Figure 2-5., Lubrication Diagram for specific requirements. Perform the following checks and services before attempting to operate the machine. TO AVOID INJURY DO NOT OPERATE A MACHINE UNTIL ALL MALFUNCTIONS HAVE BEEN CORRECTED. USE OF A MALFUNC- TIONING MACHINE IS A SAFETY VIOLATION. 1. Start each day with a full fuel tank. 2. Ensure that all items requiring lubrication are serviced in accordance with the Lubrication Chart. 3. Perform functional checks in accordance with paragraph 2-5, Daily Functional Check. 2-2 JLG Sizzor
15 SECTION 2 - PREPARATION AND INSPECTION 2.5 DAILY FUNCTIONAL CHECK TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF ANY CONTROL LEVERS OR TOGGLE SWITCHES CONTROLLING PLATFORM MOVEMENT DO NOT RETURN TO THE OFF POSITION WHEN RELEASED. A functional check of all systems must be performed, under no load, in an area free of overhead and ground level obstructions. Perform the functional check in accordance with the following procedure once the walk-around inspection is complete: 1. From the ground control station, raise and lower the platform several times and check for the following: a. Smooth elevation and lowering. b. High function speeds cut out as soon as possible after the platform lifts beyond the stowed position and begins to elevate. High function speeds must cut out prior to a maximum platform height of 14 ft (4.2 m). c. If equipped with oscillating axles - Make sure that the axle lockout valve switch is free of debris and the plunger of the switch actuates properly. As shown below, the plunger must extend (out) a minimum of 0.22 in (5.6 mm) to lock the axles when the scissor arms are raised. When fully lowered, the scissor arms will press the plunger in to allow the axles to oscillate. 2. Ensure the machine is on a firm level surface. Check for proper operation of the leveling jack limit switch first from the ground control station and then from the platform controls. With all the leveling jacks retracted, check that the platform will not raise above the following limits: 500RTS - 22 ft (6.7m) Approximate elevation 44% 3. Drive forward and reverse, check for proper operation. 4. Check that drive brakes hold when machine is driven up a hill, not to exceed rated gradeability, and stopped. 5. Steer left and right. Check for proper operation. 6. Check hydraulic oil reservoir sight gauge. Refer to Lubrication Chart. TO AVOID INJURY DO NOT OPERATE A MACHINE UNTIL ALL MALFUNCTIONS HAVE BEEN CORRECTED. USE OF A MALFUNC- TIONING MACHINE IS A SAFETY VIOLATION. Min 5.6 mm (0.22 in.) JLG Sizzor 2-3
16 SECTION 2 - PREPARATION AND INSPECTION 2.6 LOCKOUT CYLINDER CHECK (IF EQUIPPED) To be performed quarterly, any time a system component is replaced, or when improper system operation is suspected on machines with oscillating axles. NOTE: Ensure platform is fully lowered prior to beginning lockout cylinder check. 1. Place a 8 in (20 cm) high block with ascension ramp in front of the left front wheel. 2. Activate the machine s hydraulic system from the platform control station. 3. Place the engine speed and drive speed control switches to their respective LOW positions. 4. Place the drive controller to the FORWARD position and carefully drive the machine up the ascension ramp until the left front wheel is on top of the block. 5. Raise the machine platform approximately 2 ft (61 cm); ensure the lockout cylinder cam valve is free of the sizzor arm trip bar. 6. Place the drive controller to the REVERSE position and carefully drive the machine off of the block and ramp. 7. Have an assistant check to see that the left front wheel remains locked in position off of the ground. 8. Lower the machine platform; the lockout cylinder should then release the wheel and allow it to rest on the ground. 9. If the lockout cylinder does not function properly, have qualified personnel correct the malfunction prior to any further operation. 2-4 JLG Sizzor
17 SECTION 2 - PREPARATION AND INSPECTION Figure 2-1. Daily Walk-Around Inspection Diagram JLG Sizzor 2-5
18 SECTION 2 - PREPARATION AND INSPECTION GENERAL Begin the Walk-Around Inspection at Item 1, as noted on the diagram.continue to the right (counterclockwise viewed from top) checking each item in sequence for the conditions listed in the Walk-Around Inspection Checklist. TO AVOID INJURY DO NOT OPERATE MACHINE UNTIL ALL MAL- FUNCTIONS HAVE BEEN CORRECTED. USE OF A MALFUNC- TIONING MACHINE IS A SAFETY VIOLATION. TO AVOID POSSIBLE INJURY, BE SURE MACHINE POWER IS OFF DUR- ING WALK-AROUND INSPECTION. NOTE: Do not overlook visual inspection of chassis underside. Checking this area often results in discovery of conditions which could cause extensive machine damage. 1. Steer Cylinder and Tie Rod Ends - No loose or missing parts, no visible damage. No steer cylinder leaks or damage. 2. Leveling Jack, Left Front (If Equipped) - No loose or missing parts, no visible damage. No cylinder leaks or damage. 3. Drive and Lift Cutout Switches (If Equipped) - No visible damage, properly secured. 4. Steer Spindle, Left Front - No loose or missing parts, no visible damage, evidence of proper lubrication. 5. Steer/Drive Wheel and Tire Assembly, Left Front - Properly secured, no loose or missing lug nuts, no visible damage. Refer to inflation psi stenciled on frame. 6. Drive Motor, Left Front (4 Wheel Drive) - No visible damage, no evidence of leakage. 7. Drive Brake, Left Front (4 Wheel Drive) - No loose or missing parts, no visible damage, no evidence of leakage. 8. Drive Hub, Left Front (4 Wheel Drive) - No visible damage, no evidence of leakage. Drive hubs should be one half full of EPGL SAE Traversing Platform Extension Cylinder (If Equipped) - Properly secured, no visible damage, no loose or missing parts, no evidence leakage. 10. Oscillating Axle (If Equipped) - Properly secured, evidence of proper lubrication. No lockout cylinder leaks or damage. 11. Ladder - No damage, securely attached. 12. Hydraulic Reservoir - No visible damage or missing parts. No evidence of leaks. Recommended oil level in sight glass. Breather cap secure and working. 13. Ground Controls - Switches operable, no visible damage, placards secure and legible. 14. Tilt Alarm Switch - Properly secured, no loose or missing parts, no visible damage. 15. Hydraulic Filter - No visible damage, properly secured, no evidence of leakage. 16. Auxiliary Power Pump - Properly secured, no visible damage, no evidence of leakage. Hoses and fittings properly secured, no visible damage, no evidence of leaks. 17. Control Valves - Valves properly secured, no visible damage, no evidence of leakage. Hoses and fittings properly secured, no visible damage, no evidence of leaks. 18. Hand Pump Manual Descent - Properly secured, no loose or missing parts, no visible damage. 19. Fuel Tank (Gasoline or Diesel Engine) - Filler cap secure, sight gauge visible, no damage or leaks. 20. Traversing Platform Extension Cylinder (If Equipped) - Properly secured, no visible damage, no loose or missing parts, no evidence leakage. 21. Travel/Descent/Motion Alarm - Properly secured, no loose or missing parts, no visible damage. 22. Safety Prop - Stored securely, no missing parts. 23. Drive Wheel and Tire Assembly, Left Rear - Properly secured, no loose or missing lug nuts, no visible damage. Refer to inflation psi stenciled on frame. 24. Drive Motor, Left Rear - No visible damage, no evidence of leakage. 25. Drive Brake, Left Rear - No loose or missing parts, no visible damage, no evidence of leakage. 26. Drive Hub, Left Rear - No visible damage, no evidence of leakage. Drive hubs should be one half full of EPGL SAE Steer Spindle, Left Rear (If Equipped) - No loose or missing parts, no visible damage, evidence of proper lubrication. 28. LP Tank and Bracket (If Equipped) - No loose or missing parts, no visible damage. No leaks or damage. Figure 2-2. Walk-Around Inspection Points (Sheet 1 of 3) 2-6 JLG Sizzor
19 SECTION 2 - PREPARATION AND INSPECTION 29. Leveling Jack, Left Rear (If Equipped) - No loose or missing parts, no visible damage. No cylinder leaks or damage. 30. Drive and Lift Cutout Switches (If Equipped) - No visible damage, properly secured. 31. Battery Installation (Gasoline or Diesel Engine) - Proper electrolyte level, cables secure, no damage or corrosion. Holddowns secure. 32. Ladder - No damage, securely attached. 33. Traversing Platform (If Equipped) - No loose or missing parts, no visible damage, platform deck extension operates properly. 34. Leveling Jack, Right Rear (If Equipped) - No loose or missing parts, no visible damage. No cylinder leaks or damage. 35. Drive and Lift Cutout Switches (If Equipped) - No visible damage, properly secured. 36. Rear Steer Cylinder and Tie Rod Ends (If Equipped) - No loose or missing parts, no visible damage. No steer cylinder leaks or damage. 37. LP Tank and Bracket (If Equipped) - No loose or missing parts, no visible damage. No leaks or damage. 38. Steer Spindle, Right Rear (If Equipped) - No loose or missing parts, no visible damage, evidence of proper lubrication. 39. Drive Wheel and Tire Assembly, Left Rear - Properly secured no loose or missing lug nuts, no visible damage. Refer to inflation psi stenciled on frame. 40. Drive Motor, Right Rear - No visible damage, no evidence of leakage. 41. Drive Brake, Right Rear - No loose or missing parts, no visible damage, no evidence of leakage. 42. Drive Hub, Right Rear - No visible damage, no evidence of leakage. Drive hubs should be one half full of EPGL SAE Safety Prop - Stored securely, no missing parts. 44. Traversing Platform Extension Cylinder (If Equipped) - Properly secured, no visible damage, no loose or missing parts, no evidence leakage. 45. Engine Installation - Engine oil to full mark on dipstick, oil fillercap secure. Muffler/exhaust system properly secured, no leakage. Air filter assembly secure, no loose or missing parts, element clean. Gasoline Engine Only - Radiator cap secure, coolant to correct level. 46. Hydraulic Pump - Pump properly secured, no visible damage, no evidence of leakage. Hoses and fittings properly secured, no visible damage, no evidence of leaks. 47. Handrail installation - All railings securely attached, no damage or missing parts, chains securely attached. 48. Sizzor Arms and Sliding Wear Pads - Properly secured, no visible damage, evidence of proper lubrication. Inspect sizzor arm guards for damage and proper installation. 49. Ladder - No damage, securely attached. Figure 2-3. Walk-Around Inspection Points (Sheet 2 of 3) 50. Lift Cylinder - Properly secured, no visible damage, no loose or missing parts, no evidence leakage. 51. Traversing Platform Extension Cylinder (If Equipped) - Properly secured, no visible damage, no loose or missing parts, no evidence of leakage. 52. Steer/Drive Wheel and Tire Assembly, Right Front - Properly secured, no loose or missing lug nuts, no visible damage. Refer to inflation psi stenciled on frame. 53. Drive Motor, Right Front (4 Wheel Drive) - No visible damage, no evidence of leakage. 54. Drive Brake, Right Front (4 Wheel Drive) - No loose or missing parts, no visible damage, no evidence of leakage. 55. Drive Hub, Right Front (4 Wheel Drive) - No visible damage, no evidence of leakage. Drive hubs should be one half full of EPGL SAE Steer Spindle, Right Front - No loose or missing parts, no visible damage, evidence of proper lubrication. 57. High Speed Limit Switch - No visible damage, properly secured. 58. Platform Controls - Properly secured, no loose or missing parts, no visible damage. Placards secure and legible, control switches return to neutral. Control markings legible, manual in manual storage box. 59. Leveling Jack, Right Front (If Equipped) - No loose or missing parts, no visible damage. No cylinder leaks or damage. 60. Drive and Lift Cutout Switches (If Equipped) - No visible damage, properly secured. 61. Traversing Platform (If Equipped) - No loose or missing parts, no visible damage, platform deck extension operates properly JLG Sizzor 2-7
20 SECTION 2 - PREPARATION AND INSPECTION 62. Drive Cutout Switch and High Speed Cutout Switch - No visible damage, properly secured. 63. Leveling Gauge - No visible damage, properly secured. 64. Traversing Platform Valve (If Equipped) - No loose or missing parts, no visible damage, properly secured, no evidence of leakage. 65. Platform Assembly - No loose or missing parts, no visible damage, platform deck extension operates properly. Figure 2-4. Walk-Around Inspection Points (Sheet 3 of 3) 2.7 DUAL FUEL SYSTEM IT IS POSSIBLE TO SWITCH FROM ONE FUEL SOURCE TO THE OTHER WITHOUT ALLOWING THE ENGINE TO STOP. EXTREME CARE MUST BE TAKEN AND THE FOLLOWING INSTRUCTIONS MUST BE FOLLOWED. Changing from Gasoline to LP Gas 1. Start the engine from the ground control station. 2. Open the hand valve on the LP Gas supply tank by turning counterclockwise. BE SURE ALL GASOLINE IS EXHAUSTED BEFORE SWITCHING TO LP GAS. 3. While the engine is operating, place the three position LPG/GAS SELECT switch at the ground control station to the center OFF position. Allow the engine to operate, without load, until the engine begins to stumble from lack of gasoline. 4. As the engine begins to stumble place the switch to the LPG position, allowing the LP fuel to be sent to the fuel regulator. Changing from LP Gas to Gasoline 1. With engine operating on LP under a no-load condition, position the LPG/GAS SELECT switch at ground control to the GAS SELECT position. 2. If engine stumbles because of lack of gasoline, place the switch to the LPG position until engine regains smoothness, then return the switch to the GAS SELECT position. Repeat as necessary until engine runs smoothly on gasoline. 3. Close the hand valve on the LP gas supply tank by turning clockwise. 2.8 TORQUE REQUIREMENTS The Torque Chart (See Figure 2-6.) consists of standard torque values based on bolt diameter and grade, also specifying dry and wet torque values in accordance with recommended shop practices. This chart is provided as an aid to the operator in the event he/she notices a condition that requires prompt attention during the walk-around inspection or during operation until the proper service personnel can be notified. Section 1 of the Service and Maintenance Manual provides specific torque values and periodic maintenance procedures with a listing of individual components. Utilizing this Torque Chart in conjunction with the preventive maintenance section in Section 2 of the Service and Maintenance Manual, will enhance safety, reliability and performance of the machine. 2-8 JLG Sizzor
21 SECTION 2 - PREPARATION AND INSPECTION Figure 2-5. Lubrication Diagram JLG Sizzor 2-9
22 SECTION 2 - PREPARATION AND INSPECTION INDEX NO Table 2-1. Lubrication Chart COMPONENT NUMBER/TYPE LUBE POINTS LUBE METHOD INTERVAL HOURS 1 Oscillating Axle Pivot Point (Optional) 1 Grease Fitting MPG - Pressure Gun Lockout Cylinders (Optional) 2 Grease Fittings (1 each cylinder) MPG - Pressure Gun Front Steering Spindles (2-W/D) 2 Grease Fittings MPG - Pressure Gun Front Steering Spindles (4-W/D) 2 Grease Fittings MPG - Pressure Gun 100 (Optional) 5 Tow Bar Hitch (Optional) 1 Grease Fitting MPG - Pressure Gun Wheel Bearings (2-W/D) N/A MPG - Repack *Wheel Drive Hub (4-W/D) (Optional) Fill Plug EPGL (SAE 90) Hydraulic Oil Reservoir Fill Cap/Drain Plug HO - Check HO Level (See note 4)/ 10/500 HO - Change HO 9 ** Hydraulic Filter Element N/A Initial Change - 40 Hours *Wheel Drive Hub Fill Plug EPGL (SAE 90) Rear Steering Spindles (4-W/S) 2 Grease Fittings MPG - Pressure Gun 100 (Optional) RTS Sizzor Arm Pivot Pins 38 Grease Fittings (500RTS) MPG - Pressure Gun Rail Slides N/A MPG - Brush Platform Extension Slides (Optional) N/A MPG - Brush Lift Cylinder 4 Grease Fittings MPG - Pressure Gun Engine Crankcase Fill Cap/Drain Plug Check Engine Oil Level 10/100 *Torque Hubs should be 1/2 full of lubricant ** JLG Industries recommends replacing the hydraulic filter after the first 40 hours of operation and every 250 hours thereafter. KEY TO LUBRICANTS: MPG - Multi-purpose Grease EPGL - Extreme Pressure Gear Lube HO - Hydraulic Oil (Mobil 424) TO AVOID PERSONAL INJURY, USE SAFETY PROP FOR ALL MAINTENANCE REQUIRING PLATFORM TO BE ELEVATED. NOTE: 1. Be sure to lubricate like items on each side 2. Recommended lubricating intervals are based on machine operations under normal conditions. For machines used in multi-shift operations and/or exposed to hostile environments or conditions, lubrication frequencies must be increased accordingly. 3. Operate hydraulic functions through one complete cycle before checking hydraulic oil level in tank. Oil should be visible in ADD sight window on hydraulic tank. If oil is not visible, add oil until oil is visible in both ADD and FULL sight windows on tank. Do not overfill tank. 4. Any time the pump coupling is removed, coat splines of coupling with Texaco Code 1912 grease prior to assembly. (gasoline or diesel engine only) JLG Sizzor
23 SECTION 2 - PREPARATION AND INSPECTION Figure 2-6. Torque Chart JLG Sizzor 2-11
24 SECTION 2 - PREPARATION AND INSPECTION NOTES: 2-12 JLG Sizzor
25 SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL SECTION 3. USER RESPONSIBILITIES AND MACHINE CONTROL 3.1 GENERAL SINCE THE MANUFACTURER HAS NO DIRECT CONTROL OVER MACHINE APPLICATION AND OPERATION, CONFORMANCE WITH GOOD SAFETY PRACTICES IN THESE AREAS IS THE RESPONSI- BILITY OF THE USER AND HIS OPERATING PERSONNEL. This section provides the necessary information needed to understand control functions. Included in this section are the operating characteristics and limitations, and functions and purposes of controls and indicators. It is important that the user read and understand the proper procedures before operating the machine. These procedures will aid in obtaining optimum service life and safe operation. 3.2 PERSONNEL TRAINING The sizzor lift is a personnel handling device; therefore, it is essential that it be operated and maintained only by authorized personnel who have demonstrated that they understand the proper use and maintenance of the machine. It is important that all personnel who are assigned to and responsible for the operation and maintenance of the machine undergo a thorough training program and check out period in order to become familiar with the characteristics prior to operating the machine. In addition, personnel operating the machine should be familiar with ANSI standard A Responsibilities. This standard contains sections outlining the responsibilities of the owners, users, operators, lessors and lessees concerning safety, training, inspection, maintenance, application and operation. Persons under the influence of drugs or alcohol or who are subject to seizures, dizziness or loss of physical control must not be permitted to operate the machine. Operator Training Operator training must include instruction in the following: 1. Use and limitations of the platform controls, ground controls, emergency controls and safety systems. 2. Knowledge and understanding of this manual and of the control markings, instructions and warnings on the machine itself. 3. Knowledge and understanding of all safety work rules of the employer and of Federal, State and Local Statutes, including training in the recognition and avoidance of potential hazards in the work place; with particular attention to the work to be performed. 4. Proper use of all required personnel safety equipment. 5. Sufficient knowledge of the mechanical operation of the machine to recognize a malfunction or potential malfunction. 6. The safest means to operate near overhead obstructions, other moving equipment, obstacles, depressions, holes, dropoffs, etc. on the supporting surface. 7. Means to avoid the hazards of unprotected electrical conductors. 8. Any other requirements of a specific job or machine application. Training Supervision Training must be done under the supervision of a qualified operator or supervisor in an open area free of obstructions until the trainee has developed the ability to safely control a sizzor lift in congested work locations. Operator Responsibility The operator must be instructed that he has the responsibility and authority to shut down the machine in case of a malfunction or other unsafe condition of either the machine or the job site and to request further information from his supervisor or JLG Distributor before proceeding. NOTE: Manufacturer or Distributor will provide qualified persons for training assistance with first unit(s) delivered and thereafter as requested by user or his personnel. 3.3 OPERATING CHARACTERISTICS AND LIMITATIONS General A thorough knowledge of the operating characteristics and limitations of the machine is always the first requirement for any user, regardless of user s experience with similar types of equipment JLG Sizzor 3-1
26 SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL Placards Important points to remember during operation are provided at the control stations by DANGER, WARNING, CAUTION, IMPORTANT and INSTRUCTION placards. This information is placed at various locations for the express purpose of alerting personnel of potential hazards constituted by the operating characteristics and load limitations of the machine. See foreword for definitions of the above placards. Capacities Raising platform above stowed position with or without any load in platform, is based on the following criteria: 1. Machine is positioned on a smooth, firm and level surface. 2. Load is within manufacturer s rated capacity. 3. All machine systems are functioning properly. 4. Leveling Jacks properly set. Stability This machine, as originally manufactured by JLG and operated within its rated capacity on a smooth, firm and level supporting surface, provides a stable aerial platform for all platform positions. 3.4 CONTROLS AND INDICATORS Machines are equipped with control panels that use symbols instead of words to indicate control functions. Refer to Figure 3-3., Control Panel Symbols for these symbols and their corresponding functions. Ground Control Station DO NOT OPERATE FROM GROUND CONTROL STATION WITH PERSONNEL IN THE PLATFORM EXCEPT IN AN EMERGENCY. PERFORM AS MANY PRE-OPERATIONAL CHECKS AND INSPEC- TIONS FROM THE GROUND CONTROL STATION AS POSSIBLE. Figure 3-1. Ground Control Station 3-2 JLG Sizzor
27 SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL 1. Ignition/Emergency Stop - A two-position, red mushroom shaped switch supplies electrical power to the Start button when positioned up. When positioned down, the switch shuts off electrical power to the ignition circuit, acting as an emergency stop switch.with the MAIN POWER switch in the OFF position, the key can be removed in order to incapacitate the machine on the jobsite to avoid unauthorized use of the machine. 2. Power Selector Switch - A three position key-operated power selector switch supplies operating power to the platform or ground controls, as selected. When positioned to platform, the switch provides power to the platform controls. When positioned to ground, the switch provides power to the ground controls. With the power selector switch in the center off position, power is shut off to both platform and ground controls. NOTE: With the PLATFORM/GROUND SELECT switch positioned to GROUND, engine speed will stay in LOW at all times. 3. Start Button - A momentary contact, pushbuttontype switch that supplies electrical power to the starter solenoid when the IGNITION/EMERGENCY STOP switch is in the ON position and the START button is depressed. 4. Lift Switch - A three position, momentary contact lift control switch provides raising and lowering of the platform when positioned to UP or down. 5. High Engine Circuit Breaker (Diesel Engine) - A push button reset 3 Amp circuit breaker located on ground control panel returns interrupted power to diesel engine throttle when depressed. 6. Start Button - A momentary contact, push-button type switch supplies electrical power to the starter solenoid when the IGNITION switch is positioned up and the START button is depressed. 7. Choke Switch (If Equipped) - A momentary contact, push-button type switch supplies power to the choke solenoid, when depressed, to assist cold start operation. 8. Platform Traversing Switch (If Equipped) - A double throw, momentary contact toggle-type platform traversing switch permits the operator to hydraulically extend and retract the platform extension as needed for up and over work access. 9. Platform Traversing Select Switch (If Equipped) - A full throw, momentary contact toggle-type platform traversing select switch that works simultaneously with the platform traversing switch to permits the operator to hydraulically extend and retract the rear platform extension as needed for up and over work access. 10. Gasoline/LPG Select Switch (Duel Fuel Only) - A three position toggle-type switch is used to select the desired method of powering the unit. Placing the switch in the gasoline position shuts off the fuel flow from the lp gas supply tank and allows fuel flow from the gasoline tank. Moving the switch to the lpg position shuts off fuel flow from the gasoline tank and allows lp gas from supply tank to be used to power the unit. With the switch in the center position, fuel flow is restricted from both supply tanks. 11. Hourmeter - The hourmeter records engine or electric motor operating time. 12. Voltmeter - With the emergency stop switch in the up position, and before starting the engine, the voltmeter indicates output voltage of the alternator. Normal reading for the voltmeter will be volts with a properly charged or charging battery. 13. Water Temperature Gauge - The water temperature gauge provides a visual display of the engine coolant temperature. 14. Oil Pressure Gauge - The oil pressure gauge displays the engine lubrication system operating pressure. Platform Control Station 1. Enable Switch - These machines are equipped with an enable switch on the side of the platform control console. On machines built with a serial number before , the enable switch must be pressed before activating the drive, lift or steer functions. A built-in timer shuts off power to these functions if they are not activated within 3 seconds after the enable switch is depressed. In addition, this timer will shut off power to the drive and lift functions 3 seconds after they are deactivated, making if necessary to depress the enable switch before activating drive and lift again. The steer function, unless activated in conjunction with the drive or lift functions, will automatically cut off after 3 seconds of operation. On machines built from, and including, serial number , the enable switch must be depressed and held for the duration of lift. The enable switch works in conjunction with the lift switch only. 2. Ignition/Emergency Stop Switch - An ignition/ emergency stop red mushroom-type switch is provided in order to turn on machine power in the platform and also to turn off machine power in the event of an emergency. Power is turned on by positioning the switch to the up (on) position, and is turned off by positioning the switch to the down (off) position JLG Sizzor 3-3
28 SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL Figure 3-2. Platform Control Station 3. Start Button - A momentary contact, pushbuttontype switch that supplies electrical power to the starter solenoid when the ignition/emergency stop switch is in the on position and the start button is depressed. 4. Tilt Alarm Warning Horn - The Tilt Alarm Warning Horn is activated by the Tilt Alarm Switch when the chassis is on a severe slope (over 2 ) with the platform raised. IF TILT ALARM IS ON WHEN PLATFORM IS RAISED, LOWER PLATFORM COMPLETELY, THEN REPOSITION MACHINE SO THAT IT IS LEVEL BEFORE RAISING PLATFORM. 5. Tilt Alarm Warning Light - A warning light on the control console that lights when the chassis is on a severe slope (over 2 ). TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF TOGGLE SWITCHES DO NOT RETURN TO THE CENTER OFF POSITION WHEN RELEASED. 6. Lift Switch - The lift toggle switch provides for raising and lowering the platform when positioned to up or down. 7. Engine Speed Switch - A two position engine speed control switch provides the operator either high or low engine rpm as required. 8. Pump Speed Switch - A two position pump speed control switch allows the operator to select low (one pump section operating) or high (both pump sections operating) speed pump operation. NOTE: HIGH ENGINE speed, high drive speed (SPEED), and HIGH PUMP speed functions will cut-out when platform is raised above stowed position, leaving only low function speeds available until platform is lowered completely. DO NOT OPERATE MACHINE IF HIGH DRIVE SPEED, HIGH ENGINE SPEED, AND HIGH PUMP SPEED FUNCTIONS OPERATE WHEN PLATFORM IS RAISED ABOVE THE STOWED POSITION. 3-4 JLG Sizzor
29 SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL 9. PQ Controller - The PQ Controller performs three functions: Drive, Steer and Drive Speed. On all machines built before serial number , tilting the controller in the direction you want to go (forward or reverse) activates drive in that direction. The thumb-operated steer switch on top of the controller handle activates the steer wheels in the direction it is moved. If machine is equipped with four wheel steer, this switch operates only the front steer wheels. On all machines built after, and including, serial number there is a red trigger switch on the front of the controller. This switch must be depressed and held in order to drive the machine. 10. Auxiliary Power (If Equipped) - A toggle type auxiliary power control switch energizes the electricallyoperated hydraulic pump, when actuated. Switch must be held ON for the duration of auxiliary pump use. The auxiliary power pump functions to provide sufficient oil flow to operate the Traversing Platform Extensions should the main pump or engine fail during operation. It should be noted that the functions will operate at a slower than normal rate because of the lower GPM delivered. NOTE: Auxiliary power pump only operates the Traversing Platform Extensions. 11. Platform Traversing Switch (If Equipped) - This is a double throw, momentary contact toggle-type switch which permits the operator to hydraulically extend and retract the platforms as needed for up and over work access. 12. Platform Traversing Select Switch (If Equipped) - In order to select the platform to traverse there is a full throw, momentary contact toggle-type platform traversing select switch, that works in conjunction with the platform traversing switch to permit the operator to hydraulically extend and retract the platforms as needed for up and over work access. 13. Travel Warning Horn - A push-button type horn switch supplies electrical power to an audible warning device when pressed. 14. Choke (If Equipped) - A push-button type switch supplies power, when depressed, to the choke solenoid for cold start operations. 15. Leveling Jacks - The four momentary contact type toggle switches correspond to the four leveling jacks, one at each corner of the machine. BE AWARE OF OTHER PERSONNEL AND EQUIPMENT WHEN EXTENDING OR RETRACTING LEVELING JACKS. 16. Engine Distress Light (Gasoline Engine) - The engine distress light is connected to a sensor on the engine that detects when coolant temperature rises above a preset level, illuminating the warning light. 17. Engine Distress Light (Diesel Engine) - The engine distress light is connected to a sensor on the engine that detects when oil pressure falls below a preset level, illuminating the warning light JLG Sizzor 3-5
30 SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL Figure 3-3. Control Panel Symbols 3-6 JLG Sizzor
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