IMPORTANT NOTE! Before working on the Multi-Purpose Valve or the Door Bellows:
Turn the power OFF.Wear protective hand and eye gear. Use a tool such as a screwdriver or wrench (do not use your fingers)
to pull the Safety Valve Pull Ring, and vent the Chamber to ZERO pressure. Allow the unit to cool down.
|
| SYMPTOM |
CAUSE |
SOLUTION |
| MPV will not rotate. |
MPV is jammed. |
Remove, disassemble, clean and rebuild, or replace MPV.
See Important Note!, above. |
| MPV valve rotates in both directions. |
Broken Anti-rotational Spring Clip. |
Remove, disassemble, clean and rebuild, or replace MPV.
See Important Note!, above. |
| MPV will not exhaust in the EXH-DRY position; Pressure remains high |
Clogged MPV, Condensation Coil, or MPV Tubing. |
Remove, disassemble, clean and rebuild, or replace MPV.
See Important Note!, above. |
| With power ON, MPV in EXH-DRY; Dry Light is OFF, but unit is drying properly |
Dry Light malfunction. |
Replace Dry Light. |
| With power ON, MPV in EXH-DRY; Unit is not drying properly |
Excess water in Chamber. |
If Chamber door is closed, then open the door 1" to allow for proper ventilation. |
| - |
Chamber over packed. |
Refer to Owners Manual for maximum load. |
| - |
Heater malfunction |
Measure Heater for proper resistance, see Table C, page 2. Check for broken/disconnected wiring. Replace if necessary. |
| In EXH-DRY position, Power Light is ON, Dry Light OFF, but unit is not drying |
Timer not activated. |
Activate Timer by setting it past 10 minutes. If timer still does not activate, then
replace Timer. |
| - |
Micro-Switch 1 (MSW1) is defective or it is stuck in the down position. |
Set MPV to STE position, if Heat Light is OFF, adjust or replace MSW1. Refer to MULTI-PURPOSE
VALVE & MICRO-SWITCHES, page 9. |
| - |
Micro-Switch 2 (MSW2) is defective or it is stuck in the down position. |
Set MPV to STE position, if Heat Light is OFF, adjust or replace MSW2. Refer to MULTI-PURPOSE
VALVE & MICRO-SWITCHES, page 9. |
| In EXH-DRY position, Dry and Heat Lights OFF (Door open) |
Micro-Switch 3 (MSW3) is defective or it is stuck in the up position. |
Adjust or replace MSW3. Refer to MULTI-PURPOSE VALVE & MICROSWITCHES, page 9. |
| In EXH-DRY position, Circuit Breaker trips when Timer is set. |
Micro-Switch 2 (MSW2) is defective or it is stuck in the up position |
Adjust or replace MSW2. Refer to MULTI-PURPOSE VALVE & MICROSWITCHES, page 9. |
| - |
Short circuit in Wiring Harness. |
Check and replace Wiring Harness or repair shorted wire. |
| With power ON, MPV in EXH-DRY position, all three lights ON (indicating unit is overheating). |
Micro-Switch 3 (MSW3) is defective or it is stuck in the up position. |
Adjust or replace MSW3. Refer to MULTI-PURPOSE VALVE & MICROSWITCHES, page 9. |
| Door will not open after Chamber is exhausted and MPV is in the EXH-DRY position |
Door Bellows could be jammed |
1) See Important Note!, above. Then turn door closing device slightly clockwise to tighten,
then turn counter clockwise to open.
2) See Important Note!, above. Remove covers. Carefully move
the Insulation Blanket on the left side to expose the Chamber
Tightening Bolt. Loosen Bolt until Door Locking Assembly is
loose enough to open the Door. After the Door is open, tighten
the Bolt and replace the Insulation Blanket. If necessary, replace
Door Bellows Assembly. |
| - |
Vacuum in Chamber (pressure below zero). |
See Important Note!, above. If this does not correct the situation, then check if MPV has
blockage, see page 3, REMOVING OBSTRUCTIONS. |
