A.Thoroughly inspect the main and pre- filter for holes, tears or any other condition that might allow air to leak through or around the filter. Replace the filters if any damage is found.
B.Inspect the cabinet. Remove all foreign debris and dirt accumulation inside the cabinet.
C.Check for dirt accumulation on the blower wheel blades and clean if there is a buildup.
D.Bearings of blower motor should be checked for signs of unusual wear.
E.If liquids are being collected, check the drain fittings for proper drainage.
F.Check rubber gasketing and adhesion of gasketing to cabinet surfaces.
6.When soaking of impinger is complete, rinse with clean water and allow to dry.
7.Reinstall impinger and filters into the unit.
8.Switch unit on at the control switch. The blower should start.
9.If the air flow is now adequate to draw the contaminant being collected off the process, it will not be necessary to replace the main filter. If, however, the air flow remains unsatisfactory, replace the main and
TROUBLESHOOTING CHART
SYMPTOM |
| POSSIBLE CAUSES |
| CORRECTIVE ACTION |
| 1. | Proper power not reaching unit | 1. | Check that unit is connected to live |
| 2. | Loose electrical connections |
| power line with good fuses, and |
Failure to start | 3. | Defective control switch |
| that the voltage at the unit is |
(motor does not start when unit is | 4. | Defective Motor |
| correct |
turned on |
|
| 2. | Check; tighten if necessary |
|
|
| 3. | Replace control switch |
|
|
| 4. | Replace motor/ blower assembly |
|
|
|
|
|
| 1. | Dirty or dogged filters | 1. | Replace filters |
| 2. | Discharge grille obstructed | 2. | Clean or remove obstruction |
Motor / Blower operates with little or | 3. | Blower wheel blades loaded with | 3. | Clean blower wheel blades |
| dirt | 4. | Tighten blower wheel on shaft | |
no air volume | 4. | Blower wheel loose on motor shaft | 5. | Supply correct line voltage |
| 5. | Incorrect voltage | 6. | Clean impinger |
| 6. | Dirty or dogged impinger | 7. | Reverse 2 of the 3 input power |
| 7. | Motor rotation incorrect |
| leads (3 Phase only) |
|
|
|
|
|
| 1. | Filter ruptured or torn | 1. | Replace filter |
Blow Through / Bypass | 2. | Gasket missing or damaged | 2. | Install or repair |
| 3. | Filter saturated or damaged | 3. | Replace filter |
|
|
|
|
|
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