Filter
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11
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 pre-filter.
TROUBLESHOOTING CHART
SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION
Failure to start
(motor does not start when unit is
turned on
1. Proper power not reaching unit
2. Loose electrical connections
3. Defective control switch
4. Defective Motor
1. Check that unit is connected to live
power line with good fuses, and
that the voltage at the unit is
correct
2. Check; tighten if necessary
3. Replace control switch
4. Replace motor/ blower assembly
Motor / Blower operates with little or
no air volume
1. Dirty or dogged filters
2. Discharge grille obstructed
3. Blower wheel blades loaded with
dirt
4. Blower wheel loose on motor shaft
5. Incorrect voltage
6. Dirty or dogged impinger
7. Motor rotation incorrect
1. Replace filters
2. Clean or remove obstruction
3. Clean blower wheel blades
4. Tighten blower wheel on shaft
5. Supply correct line voltage
6. Clean impinger
7. Reverse 2 of the 3 input power
leads (3 Phase only)
Blow Through / Bypass
1. Filter ruptured or torn
2. Gasket missing or damaged
3. Filter saturated or damaged
1. Replace filter
2. Install or repair
3. Replace filter