
SECTION 6 – MAINTENANCE & TROUBLESHOOTING
Frequency* |
| Maintenance |
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Every Month |
| Units in heavy service environ- |
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| ments: |
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| Check labels, cables, and wiring; |
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| clean internal parts (see Section |
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Every 3 Months |
| Check cables and wiring (see |
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| Section |
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Every 6 Months |
| Check all labels (see IMPORTANT |
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| block, Section |
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| parts (see Section |
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*Frequency of service is based on units operated at 40 hours per week. Increase frequency of mainten- ance if usage exceeds 40 hours per week.
A. Cables And Wiring
WARNING: Read and follow safety informa- tion at beginning of entire Section
Check wiring, cable, and bimetal jumper bar connec- tions for tightness and flaws. Ensure that all connections are clean and tight. Check the insulation for breaks or other signs of damage. Repair or replace cables or wir- ing as necessary. Check for any contact by bimetal jumper bar to surfaces or components other than the in- tended connections. Move bimetal jumper bar to pre-
vent contact with other surfaces or components be- tween connection points.
B. Internal Cleaning
WARNING: Read and follow safety informa- tion at beginning of entire Section
Keep the unit clean by blowing out the inside with clean, dry, compressed air. Clean any dirty connections. Check and tighten any loose connections.
6-2. RESETTING CIRCUIT BREAKERS (Figure
The circuit breakers are
If a circuit breaker trips when equipment use begins, a fault is probable present in the equipment. If a breaker trips after prolonged equipment use, an overload condi- tion is probably present. Should a breaker trip, proceed as follows:
WARNING: ELECTRIC SHOCK can kill.
• Do not touch live electrical parts.
•Stop engine, and disconnect equipment from deenergized receptacle before repairing a fault or overload.
1.Locate and repair fault or reduce receptacle load.
2.Reconnect equipment to receptacle and start en- gine.
3.Reset circuit breaker (depress button); it may be necessary to allow a cooling period before the breaker can be reset.
4.Resume operation.
6-3. CIRCUIT BOARD PC3 OR PC4 REPLACE- MENT PROCEDURE (Figure 6-1)
WARNING: ELECTRIC SHOCK can kill.
• Do not touch live electrical parts.
•