WARNING TABLE 3-1: DAILY SAFETY CHECK

Transcription

1 III. T PSL-10 MAINTENANCE his chapter contains maintenance information for the Ricon PSL-10. The information consists of a maintenance schedule, component descriptions, electrical diagrams, fuse locations, and a diagnostic guide. This chapter is intended to supplement the related sections of the vehicle manufacturer Owner or Service Manuals. WARNING THIS RICON PRODUCT IS HIGHLY SPECIALIZED. AUTHORIZED RICON SERVICE TECH- NICIANS MUST PERFORM MAINTENANCE AND REPAIRS, USING RICON REPLACEMENT PARTS. MODIFYING OR FAILING TO PROPERLY MAINTAIN THIS PRODUCT MAY RE- SULT IN UNSAFE OPERATING CONDITIONS AND MAY VOID THE WARRANTY. A. MAINTENANCE SCHEDULE Routine maintenance of the Ricon PSL-10 will provide optimum performance and reduce the need for repairs. An authorized lift operator (trained attendant) must perform the service points listed in Table 3-1, "DAILY SAFETY CHECK" on an ongoing basis. During the Ricon warranty period an authorized Ricon service technician must perform the service points listed in Table 3-2, "MAINTENANCE SCHEDULE". It is recommended that an authorized Ricon service technician continue maintenance when the warranty expires. Under extreme service (approximately 20 daily cycles or more) it is recommended that maintenance be performed more frequently. SERVICE POINT Control Pendant Hydraulic Power Unit Vehicle Interlock System Handrails Platform Decals Outer Rollstop Step-Lift Operation Step-Lift Travel Step-Lift Operation Step-Lift Travel Outer Rollstop Hydraulic Power Unit TABLE 3-1: DAILY SAFETY CHECK CHECK STEP-LIFT AT STOWED POSITION Visual damage and cable connector tightness. Visible hydraulic fluid leakage. Backup pump manual release valve is closed (lightly-seated). CAUTION One person must be in driver seat to maintain vehicle control during the following check. One operator sets parking brake, depresses vehicle brake pedal, turns on ignition and places transmission in gear. The second operator opens vehicle side door(s) and verifies that lift DOES NOT operate. Mounting bolts are tight. PLATFORM DEPLOYED Platform unfolds effortlessly (no grinding noises or binding), and all joints are secure. Securely attached, clearly visible and legible. Rollstop can be locked in upright position. RAISE PLATFORM TO FLOOR LEVEL Listen for abnormal sound as lift operates (i.e. grinding or binding noise). Step-lift rises fully to floor level. LOWER PLATFORM TO GROUND LEVEL Listen for abnormal noise as lift is operates (i.e. grinding or binding noise). Step-lift travel is sufficient to reach ground. Rollstop can be locked in upright position. Rollstop contacts ground when opened fully. Hydraulic fluid level in reservoir. (continued) 32DSL102.C 3-1

2 Outer Rollstop Platform Stow Lock STOW LIFT Rollstop pivots down flush against platform. Platform folds completely into step configuration. Stow Lock securely engages lift at stow level. SERVICE POINT Decals and Cleaning Drive Chains and Rollers Platform Hinge points Hydraulic Power Unit TABLE 3-2: MAINTENANCE SCHEDULE DESCRIPTION TWO-WEEK MAINTENANCE (or at cycles of operation) Decals are affixed properly, clearly visible and legible. Replace as necessary. Serial number is clearly marked and legible. THREE-MONTH MAINTENANCE (or at cycles of operation) Spray Curtisol Red Grease No (or equivalent) (follow directions on container) on drive chains and drive rollers. Wipe excess grease from drive chains and surrounding areas. Spray Curtisol Red Grease No (or equivalent) (follow directions on container) on platform hinge points. Wipe clean any excess grease from hinge and surrounding areas. CAUTION Check and add fluid when platform is at ground level. Adding fluid with platform raised will cause oil reservoir to overflow when it is lowered. Hydraulic fluid level is at required FULL level. Add only Texaco Aircraft Hydraulic Oil or equivalent U.S. mil spec H5606G fluid. CAUTION AN AUTHORIZED RICON SERVICE TECHNICIAN MUST PERFORM THIS MAINTENANCE CHECK. Drive Chain and Shafts Hydraulic cylinder, Hoses and Fittings Hydraulic Power Unit ANNUAL MAINTENANCE (or at cycles of operation). Spray Curtisol Red Grease No (or equivalent) (follow directions on container) on drive chains and drive shafts. Wipe excess grease from drive chains and surrounding areas. Inspect hydraulic hoses for damage. All fittings are tight. Check Hydraulic Cylinder for evidence of leaks. Flush system, add new hydraulic fluid and bleed system of air. CAUTION AN AUTHORIZED RICON SERVICE TECHNICIAN MUST PERFORM THIS MAINTENANCE CHECK. Control Pendant Hydraulic Power Unit SEVEN-YEAR MAINTENANCE (or at 25,000 to 26,000 cycles of operation) Replace pendant. Replace pump electric motor. TEN-YEAR MAINTENANCE (or after 36,000 cycles) Ricon Corporation recommends that lift be refit after ten years of service or 36,000 cycles of operation DSL102.C

3 B. COMPONENT DESCRIPTION 1. INTERLOCK MODULE Note: The following section applies only to vehicles that have a Ricon interlock module installed, however, it is possible that a vehicle may have a non-ricon interlock module installed. Refer to Figure 3-1. The Interlock Module prevents operation of the lift and vehicle when it detects an unsafe condition. When the lift is deployed, the module locks the transmission in PARK. In addition, a warning light is illuminated. When the lift is unsafe to operate (i.e., the transmission is not in PARK) the Interlock Module removes power from the pendant. The Interlock Module is mounted under the dash next to the steering column. Refer to Tables 3-3, 3-4 and 3-5 for descriptions of the Interlock Module J1 J3 connector pin function states. 2. PLATFORM OVERRIDE SWITCH Refer to Figure 3-2. The Override Switch can be used as a temporary bypass if the platform fold switch, rollstop switch, or platform contacts do not operate. All of these switches and contacts must be working properly to enable operation of the platform. Pressing and holding the override switch will allow use of the pendant. The Override Switch is for emergency use, only, and an authorized Ricon service technician should service the lift after use of the switch. J2 J1 J3 FIGURE 3-1: INTERLOCK MODULE FIGURE 3-2: OVERRIDE SWITCH 32DSL102.C 3-3

4 TABLE 3-3: INTERLOCK MODULE J1 WIRE FUNCTIONS - MAIN POWER HARNESS Pin Wire Color Function At Rest In Action 1 Red DC Power input Constant 12 VDC Constant 12 VDC 2 Violet Ignition input 0 Volts when Ignition is OFF 12 Volts when Ignition is ON 3 Black Ground Ground Ground 4 White Lift Enable input 0 Volts when transmission is not in PARK 5 White/red Transmission status input Ground when vehicle transmission is in "PARK" 12 Volts when transmission is in PARK No continuity when transmission is not in "PARK" 6 Black Stowed Switch input Ground when lift is Stowed No continuity when lift is not stowed 7 NC 8 NC TABLE 3-4: INTERLOCK MODULE J2 WIRE FUNCTIONS - DOOR OPEN WARNING LIGHT Pin Wire Color Function Light Off Light On 1 Black Negative Output No continuity when stow switch is actuated Ground when stow switch is not actuated 2 Red Positive Output 12 Volts constant DC 12 Volts constant DC TABLE 3-5: INTERLOCK MODULE J3 WIRE FUNCTIONS - INTERLOCK HARNESS Pin Wire Color Function At Rest In Action 1 NC 2 NC 3 NC 4 NC 5 Gray/Black Transmission Interlock C. ELECTRICAL DIAGRAM 1. WIRING DIAGRAM COLOR CODES Zero volts when the ramp is not stowed or the ignition is OFF. TABLE 3-6: WIRE COLOR CODES CODE COLOR CODE COLOR BLK BLACK RED RED BLU BLUE TAN TAN BRN BROWN VIO VIOLET GRN GREEN WHT WHITE GRY GRAY YEL YELLOW ORG ORANGE 12 Volts when the ramp is stowed and the ignition is ON (allows shifting) DSL102.C

5 2. ELECTRICAL WIRING DIAGRAM FIGURE 3-3: PSL-10 INSTALLATION WIRING DIAGRAM 32DSL102.C 3-5

6 D. DIAGNOSTIC GUIDE WARNING THE DIAGNOSTIC GUIDE DOES NOT INCLUDE ROUTINE SAFETY PRECAUTIONS OR PRELIMINARY PROCEDURES. AUTHORIZED RICON SERVICE TECHNICIANS MUST PERFORM DIAGNOSTICS DURING THE RICON WARRANTY PERIOD. IT IS RECOMMENDED THAT DIAGNOSTICS CONTINUE TO BE PERFORMED BY AN AUTHORIZED RICON SERVICE TECHNICIAN AFTER THE WARRANTY PERIOD. TABLE 3-7: DIAGNOSTIC GUIDE Function Symptom Possible Cause Remedy Step-Lift Operation Interlock Operation Pendant button is depressed; no action or sound is noticed Lift cannot be operated when folded Lift cannot be operated when platform is deployed (unfolded) and rollstop is up Vehicle cannot be shifted out of PARK Blown circuit breaker Defective or damaged door open switch Shorted wire or damaged harness Defective Pendant Interlock system is prohibiting lift operation: Transmission is not in PARK Defective or damaged interlock module, if used Defective OEM transmission indicator Defective lift platform folded switch Defective or shorted harness Defective or damaged rollstop switch Defective or damaged contact points on folding sections of platform Defective or shorted harness Defective Pendant Ramp is not completely stowed Defective or damaged Stow Switch Defective or damaged interlock module, if used (continued) Reset circuit breaker, check for short circuit Repair or replace door switch Find and repair short or replace harness Replace pendant Shift transmission into PARK Replace interlock module Repair OEM transmission indicator Replace platform folded switch Find and repair short or replace harness Replace rollstop switch Clean and align or replace contact points Repair or replace harness. Replace pendant Completely stow ramp Replace stow switch Replace interlock module DSL102.C

7 Lift will not rise Lift will not lower No sound is heard from pump unit while attempting to raise lift Pump is running, but not raising lift Pendant button is depressed but lift will not lower Blown circuit breaker Defective or damaged door open switch Defective or damaged pump solenoid Defective UP switch on pendant Shorted wire in harness from pendant to Hydraulic Pump Damaged Hydraulic Pump assembly Hydraulic pump is low on oil Leak in hydraulic lines Broken or damaged leveling chain has caused lift to jam itself Leveling chain has become derailed from guide rollers Inboard barrier may be damaged Damaged hydraulic cylinder Stow Lock is not disengaged Defective or damaged Stow Lock Defective or damaged pump down valve Defective DOWN switch on Pendant Shorted wire in harness from Pendant to Hydraulic Pump Reset or replace circuit breaker Replace open door switch Replace pump assembly Replace pendant Repair or replace harness Replace hydraulic pump assembly Add oil to hydraulic pump tank Find and repair leak, replace line if necessary Replace leveling chain Repair leveling chain and replace rollers Replace barrier Replace hydraulic cylinder Disengage Stow Lock Repair or replace Stow Lock Replace Hydraulic Pump Assembly Replace Pendant Repair or replace harness 32DSL102.C 3-7

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