7-5
Troubleshooting
Operator Manual
122993-622
Table 7-1. Troubleshooting Chart (Cont'd)
PROBLEM
POSSIBLE CAUSE AND/OR CORRECTION
16. Items come out dirty.
1.
Empty detergent container. Refill or replace container.
2.
Incorrect detergent used. Use recommended products.
3.
Spray jets clogged. Clean spray jets and headers.
4.
Spray header plugs missing. Replace plugs.
5.
Too much detergent injected into wash recirculating tank. Verify
injection rate.
6.
Spray jets misaligned. Realign jets toward load surfaces.
7.
Pump suction pick-up pipe clogged. Clean pick-up pipe.
8.
Loose hose connection on pump suction pick-up pipe. Tighten hose
clamps or replace as necessary.
9.
Water level sensing probe malfunction. Verify operation. Clean or
replace as necessary.
10. Self-cleaning screen clogged. Remove debris from screen.
11. Temperature set point too low. Raise temperature set point.
12. Drain line plugged. Flush out line.
13. Manual drain valve clogged. Clean valve.
14. Not enough pressure on lower spray jets. Adjust hydraulic hold down
system.
15. Too much steam pressure. Adjust steam throttling valve, at heat
exchanger, to 185 – 195 °F (85 – 91 °C).
16. Not enough final rinse water. Open final rinse water throttling valve,
at heat exchanger, to 185 – 195 °F (85 – 91 °C).
17. Conveyor not moving.
1.
Conveyor jammed. Check for obstructions.
2.
Drive system
EMERGENCY STOP
pushbutton pushed in. Pull out
pushbutton.
3.
Solution/water temperature below optional temperature guarantee
set point. Allow solution/water in recirculating tanks to reach tem-
perature.
4.
Manual drain valve open. Close valve.
5.
Poor electrical connection between drive system and control. In-
spect connections and tighten if necessary.
6.
Water level sensing probe malfunction. Verify operation. Clean or
replace as necessary.
7.
Drive clutch loose. Tighten clutch assembly.
8.
Blown fuse. Replace fuse.
9.
Drive chain broken. Replace chain.
Continued...
