Instruction Manual. Overhead Stirrer 120 VAC. Catalog Number:

Transcription

1 Instruction Manual Overhead Stirrer 120 VAC Catalog Number: Wheaton Industries, Inc North 10th Street Millville, NJ USA Tel: Fax: Wheaton Industries Inc.

2 CONTENTS WARRANTY... 3 SPECIFICATIONS 4 GENERAL SAFETY RULES... 5 INTRODUCTION... 7 SAFETY SYMBOLS USED IN THIS MANUAL AND ON THIS PRODUCT... 8 OPERATION... 9 MAINTENANCE TROUBLESHOOTING..10 MOTOR REPLACEMENT CONTROL BOARD REPLACEMENT MOTOR BRUSH REPLACEMENT FUSE REPLACEMENT PARTS LISTS & DIAGRAMS OPTIONAL ACCESSORIES WEEE STATEMENT Wheaton Industries Inc. 2

3 WHEATON Industries Inc. Limited Warranty All goods and materials shall conform to Wheaton Industries Inc. specifications at the time of shipment from our plant. Wheaton Industries warrants this product to be free from defects in material and workmanship for a period of 365 days from the date of shipment. If the repair or adjustment is necessary within the warranty period and has not been the result of mishandling or abuse, Wheaton will either correct the non-conforming condition, or replace any nonconforming goods or materials or issue a credit in the amount of the purchase price paid and received for such goods. All claims for product nonconformity must be made within ten (10) days of identifying such a problem by calling Customer Service at (U.S., Puerto Rico and Canada); or Internationally at and then providing the Model, Serial and Catalog Number of the product. Items returned are to be packed very carefully so as to prevent damage in transit. Wheaton will also repair or adjust any product that is beyond the warranty period for a nominal fee. Wheaton makes no other express or implied warranty, statutory or otherwise, concerning materials or goods supplied, including without limitation, ANY WARRANTY of fitness for a particular purpose or any warranty of merchantability. The warranties given are exclusive of all other warranties expressed or implied. Wheaton shall not be liable for consequential, special or incidental damages. To expedite any technical or service request, please have the following information available. Thank you. Model Serial No. Catalog No Wheaton Industries Inc. 3

4 SPECIFICATIONS OPERATING VOLTAGE: POWER CONSUMPTION: FUSE: SPEED RANGE: TORQUE: CHUCK CAPACITY: CABINET DIMENSIONS: WEIGHT: INSTALLATION CATEGORY: 120 VAC, 50/60 Hz 120 watts 2.0AT, 3AG, 250v 300 5,000 RPM (under load) 17 in/lbs ¼ dia. 4 ½ w x 5 d x 12 h (11.5 x 13 x 30 cm) 6lbs (2.7kg) Class II ENVIRONMENTAL: Operating temperature: 5 C to 40 C Humidity: 80% up to 31 C 50% at 40 C Altitude limit: 2000 meters IP CODE: Wheaton Industries Inc. 4

5 GENERAL SAFETY RULES WARNING! READ AND UNDERSTAND ALL INSTRUCTIONS. Failure to follow all instructions listed below may result in electrical shock, fire and / or serious personal injury. SAVE THESE INSTRUCTIONS WORK AREA 1. Keep your work area clean and well lit: Cluttered benches or dark areas invite accidents. 2. Do not operate instrument in explosive atmospheres, such as in the presence of flammable liquids, gasses or dust. Motors create sparks which may ignite the dust or fumes. 3. Keep bystanders, children, and visitors away while operating instrument. Distractions can cause you to loose control. ELECTRICAL SAFETY 4. Grounded equipment must be plugged into an outlet properly installed and grounded in accordance with all codes and ordinances. Never remove the grounding prong or modify the plug in any way. Do not use any adaptor plugs. Check with a qualified electrician if you are in doubt as to whether the outlet is properly grounded. If the instrument should electrically malfunction or break down, grounding provides a low resistance path to carry electricity away from the user. 5. Avoid body contact with grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk of electrical shock if your body is grounded. 6. Do not abuse the cord. Keep cord away from heat, oil, sharp edges or moving parts. Replace damaged cords immediately. Damaged cords increase the risk of electrical shock. PERSONAL SAFETY 7. Stay alert, watch what you are doing, and use common sense when operating instrument. Do not use instrument while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating instrument may result in serious personal injury. 8. Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair can be caught in moving parts. 9. Avoid accidental starting. Be sure switch is off before plugging in Wheaton Industries Inc. 5

6 10. Remove adjusting keys or wrenches before turning instrument on. A wrench or a key that is left attached to a rotating part of the tool may result in personal injury. 11. Do not overreach. Keep proper footing and balance at all times. Proper footing and balances enables better control of the instrument in unexpected situations. 12. Use safety equipment. Always wear eye protection. INSTRUMENT USE AND CARE 13. Do not use instrument if switch does not turn it on or off. Any equipment that cannot be controlled with the switch is dangerous and must be repaired. 14. Disconnect the plug from the power source before making any adjustments, changing accessories, or storing the instrument. Such preventative safety measures reduce the risk of starting the instrument accidentally. 15. Store idle equipment out of reach of children and other untrained persons. 16. Maintain instrument with care. Do not use damaged equipment. Tag damaged equipment Do not use until repaired. 17. Check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the instrument s operation. If damaged, have the instrument serviced before using. Many accidents are caused by poorly maintained equipment. 18. Use only accessories that are recommended by the manufacturer for your model. Accessories that may be suitable for one instrument may become hazardous when used on another instrument. SERVICE 19. Instrument service must be performed only by qualified repair personnel. Service or maintenance performed by unqualified personnel could result in a risk of injury. 20. When servicing an instrument, use only identical replacement parts. Follow instructions in the Maintenance section of this manual. Use of unauthorized parts or failure to follow Maintenance Instructions may create a risk of electric shock or injury. If the instrument is used in a manner not specified by the manufacturer, the protection provided by the instrument may be impaired Wheaton Industries Inc. 6

7 INTRODUCTION The Wheaton Overhead Stirrer is designed specifically for use with Wheaton Potter- Elvehjem and tapered tissue grinders with Teflon pestles. The precision adjustable chuck will accommodate most pestles and mixing rods with ¼" diameter shafts. The Overhead Stirrer features a solid state speed controller and heavy duty drive motor to provide ample power and speed for most laboratory applications. In addition to facilitating power homogenization operations, the Overhead Stirrer is ideal for general laboratory mixing operations using the optional swivel blade paddle. A speed range of 300 5,000 (under load) RPM gives the Wheaton Overhead Stirrer a high degree of versatility for a broad range of applications. The unit is housed in an attractive enamel finish aluminum cabinet which is both durable and stain resistant. An aluminum rod and clamp are included for attachment to a support stand. Scientists and associates alike will appreciate the reliability and durability of the Wheaton Overhead Stirrer Wheaton Industries Inc. 7

8 SAFETY SYMBOLS USED IN THIS MANUAL AND ON THIS PRODUCT A Warning symbol indicates attention to an operation which can cause operator injury, improper function of or damage to the instrument and possible problems with the process. An Electrical danger symbol indicates attention to an operation which could cause electrocution or severe injury Wheaton Industries Inc. 8

9 OPERATION (refer to fig. A) 1. Carefully unpack unit, being sure to save the box and packing materials to facilitate returning the unit in the event it should require servicing. 2. The instrument should be located in an area where AC power is conveniently available. 3. Mount the stirrer to a laboratory stand using the provided clamp (6). NOTE! A LABORATORY STAND IS NOT INCLUDED WITH THE UNIT 4. Open the keyless chuck (3) by holding the end closest to the stirrer cabinet and turning the end with the opening clockwise (as viewed from above) and insert shaft of pestle or paddle. 5. Making certain the shaft is inserted straight into the chuck, tighten chuck securely by holding the end closest to the stirrer cabinet and turning the end with the opening counter-clockwise (as viewed from above). Tighten securely. WARNING! NEVER INSERT GLASS SHAFTS INTO THE CHUCK, AS INJURY MAY RESULT. 6. Connect the unit to a suitable source of AC power. 7. Turn the unit on by rotating the speed control knob (17) clockwise until a slight click is felt. Provided the unit is connected and operating properly, the indicator lamp (18) will light. 8. Adjust the speed control knob until the desired rotational speed is obtained. Turn the speed control knob clockwise to increase stirrer speed, or counterclockwise to decrease stirrer speed. NOTE: THE RUNNING TORQUE OF THE MOTOR IS PROPORTIONAL TO THE MOTOR SPEED. 9. It is recommended that stirrer speed be increased gradually to avoid possible damage to samples or splashing. 10. Turn stirrer off when not in use and always unplug when changing pestles or paddles. WARNING! NEVER ATTEMPT TO INSERT OR REMOVE SHAFTS FROM THE CHUCK WHILE THE UNIT IS PLUGGED IN Wheaton Industries Inc. 9

10 MAINTENANCE QUALIFIED SERVICE PERSONNEL ONLY DANGER! NEVER ATTEMPT TO PERFORM REPAIRS IF THIS INSTRUMENT IS PLUGGED IN! IN ORDER TO AVOID SERIOUS ELECTRIC SHOCK OR ELECTROCUTION, THIS INSTRUMENT MUST BE DISCONNECTED FROM THE SOURCE OF AC POWER BEFORE REMOVAL OF ANY PROTECTIVE COVERS. As with any piece of laboratory equipment, periodic inspection for worn and or damaged parts should be performed on a regular basis in order to maintain optimum performance. How often is dependent upon the amount of usage, working environment, motor speed and instrument age. The maintenance interval is determined by frequency of use. Be sure to include inspection of the motor brushes in your maintenance schedule (see motor brush replacement), and replace if brush length is less than 1/16. TROUBLE SHOOTING Unit will not operate: Cause: Fuse blown Remedy: Replace fuse with proper size and type. (see fuse replacement) Cause: Remedy: Cause: Remedy: Cause: Remedy: Cause: Remedy: Supply voltage low or at zero. Check house receptacle with a voltmeter. On/off power switch in off position. Turn on power by rotating speed control knob clockwise. Motor defective. Replace motor (see motor replacement). Control board defective. Replace control board (see control board replacement) Wheaton Industries Inc. 10

11 MOTOR REPLACEMENT (refer to fig. A) DANGER! NEVER ATTEMPT TO PERFORM REPAIRS IF THIS INSTRUMENT IS PLUGGED IN! IN ORDER TO AVOID SERIOUS ELECTRIC SHOCK OR ELECTROCUTION, THIS INSTRUMENT MUST BE DISCONNECTED FROM THE SOURCE OF AC POWER BEFORE IT IS WORKED ON. 1. Disconnect unit from the AC power source. 2. Using a 5/64 allen wrench, loosen the set screw that holds the chuck (3) to the motor shaft and remove chuck. 3. Remove the eight screws, (two each side, four in rear), which secure the cabinet front cover (1) to the cabinet rear cover (2). 4. Remove the two screws in cabinet rear cover that secure the vibration isolators (3) to the cabinet rear cover. 5. Separate the cabinet halves. 6. Disconnect the motor leads from the double male connectors (27). 7. Disconnect the green grounding wire from the motor by removing the hex nut securing the wire. 8. Remove the two screws in cabinet front cover that secure the vibration isolators to the cabinet front cover. 9. Remove defective motor. 10. Remove the four vibration isolators from the motor by unscrewing. 11. For reassembly, reverse above order using new motor Wheaton Industries Inc. 11

12 CONTROL BOARD REPLACEMENT (refer to fig. A) DANGER! BE CERTAIN UNIT IS DISCONNECTED FROM THE AC POWER SOURCE. 1. Disconnect unit from the AC power source. 2. Using a 1/16 allen wrench, loosen the set screw that secures the speed control knob (17) to the control board (5) and remove knob. 3. Remove the outside pot hex nut (25). 4. Remove the eight screws, (two each side, four in rear), which secure the cabinet front cover (1) to the cabinet rear cover (2). 5. Remove the two screws in cabinet rear cover that secure the vibration isolators (13) to the cabinet rear cover. Separate the cabinet halves. 6. Disconnect the wire harness from the control board. 7. While applying a slight outward pressure against the control board, press in on locking tabs of circuit board supports (24) and remove control board. 8. For reassembly, reverse above order using new control board Wheaton Industries Inc. 12

13 MOTOR BRUSH REPLACEMENT (refer to fig. A) DANGER! BE CERTAIN UNIT IS DISCONNECTED FROM THE AC POWER SOURCE. 1. Disconnect unit from the power source. 2. Using a 5/64 allen wrench, loosen set screw that holds the chuck (3) to the motor shaft and remove chuck. 3. Remove the eight screws, (two each side, four in rear), which secure the cabinet front cover (1) to the cabinet rear cover (2). 4. Remove the two screws in cabinet rear cover that secure the vibration isolators (13) to the cabinet rear cover. 5. Separate the cabinet halves. 6. Disconnect the motor leads from the double male connectors. 7. Remove the two screws in cabinet front cover that secure the vibration isolators to the cabinet front cover. 8. Remove motor from unit. 9. Remove the two nuts and lock washers located on the bottom of the motor casing. 10. Slide motor casing apart, revealing motor brush housings. 11. Straighten brush spring retainer tab. 12. Place thumb at rear of brush housing and with other hand slide brush spring retainer tab through slots of housing. 13. Carefully remove brush spring and brush. 14. Inspect motor brushes for wear and replace if brush length is less than 3/16 long. 15. Be certain to replace brushes with slotted side up. 16. For reassembly, reverse above order Wheaton Industries Inc. 13

14 FUSE REPLACEMENT (see fig. A) DANGER! BE CERTAIN UNIT IS DISCONNECTED FROM THE AC POWER SOURCE. 1. Disconnect unit from the AC power source. 2. Locate the square fuse holder (10). 3. Depress the fuse holder cap (11) and remove the fuse (12). 4. Replace with new 2.0AT 3AG 250V fuse. OVERHEAD STIRRER CAT. # PARTS LIST (FIG. A) ITEM NO DESCRIPTION USE QTY WHEATON NO 1 LID, CABINET BASE, CABINET CHUCK W/ ADAPTER 1 WL MOTOR 1 I PCBA, CONTROL 1 I CLAMP 1 I CORD, LINE 18-3, 6 FT 1 I BUSHING, STRAIN RELIEF 1 I ROD, MOUNTING HOLDER, FUSE w PUSH ON 1 I CAP, GREY, FUSE HOLDER 1 I FUSE, 2.0AT 3AG, 250V 1 I INSULATOR, VIBRATION BLOCK, ROD MOUNTING SET SCREW, X 3/16" NUT, HEX, 10-32, SS 1 I KNOB, 1/4 W/1-10 SKIRT 1 WI LAMP, PILOT 1 I SCREW, X 3/8 4 I WASHER, STAR, #10 6 I SCREW, S-TAP, 6-32 X ¼ SCREW, 8-32 X ¼ 8 I SCREW, X ¾ PCB, SUPPORT NUT, POT SET SCREW, I INSULATED MALE DOUBLE Q/C 3 I Wheaton Industries Inc. 14

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16 OVERHEAD STIRRER CAT. # PARTS LIST (FIG. B) ITEM NO DESCRIPTION USE QTY WHEATON NO 1 PCBA, O-H STIRRER W/MOLEX 1 I WIRE HARNESS, PCBA 1 I ASSEMBLY, DAYTON MOTOR 1 I BLOCK, ROD MOUNTING PILOT LAMP 1 I #18-3 X 6 FT, CBL LINE 1 I SQUARE FUSEHOLDER 1 I GRAY CAP, FUSEHOLDER 1 I FUSE, AAG 2 AMP SB 1 I CONN,.250, F, 22/16AWG #10 CONN, RING, 16/ CONNECTOR, MALE/MALE 3 I Wheaton Industries Inc. 15

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18 OPTIONAL ACCESSORIES DESCRIPTION QTY WHEATON NO SWIVEL BLADE PADDLE, ¼ DIA X 10 LG BLADE MEASURES ½ W X 2 L. STAINLESS STEEL. EXTENSION ROD, ¼ DIA X 6 LG FOR USE WITH EXTENSION SLEEVE. STAINLESS STEEL EXTENSION ROD, ¼ DIA X 12 LG. FOR USE WITH EXTENSION SLEEVE. STAINLESS STEEL. EXTENSION SLEEVE FOR COUPLING ¼ DIA RODS STAINLESS STEEL WEEE STATEMENT This Overhead Stirrer is not to be discarded in typical trash outlets. This unit is to be discarded according to WEEE guidelines established in your area. There are no reusable parts. Contact the original distributor from which this product was purchased for proper disposal instructions Wheaton Industries Inc. 16

19 Stylized W is a registered trademark of Wheaton Industries, Inc Wheaton Industries Inc. 17