Carrier 31MC - Manual (Page 8)

SERVICE PROBLEM ANALYSIS
COMPLAINT POSSIBLE CAUSES SOLUTION
Indicator Light Off Shorted cells See Troubleshooting Procedure.
Shorted top guide
Defective light
Defective power supply
i Defective push button Energize blower.
Blower not operating
Cells wet either due to high humidity or from being
washed Cells will dry.
Arc Test Button
Shorted cells See Troubleshooting Procedure.
Produces No Snapping
Shorted top guide
Noise
Defective push button
Defective surge resistor
Defective power supply
System blower not operational
Humidifier upstream
Cells loaded
Energize blower.
Unit Snaps or Arcs Line voltage too high Adjust line voltage.
Continuously Cells need cleaning Clean cells.
Broken ionizer wire Replace wire.
Broken contact spring in top guide of power door Replace spring.
Broken insulator in cell Replace insulator.
Broken insulator in power door or contact tray Replace insulator.
Foreign material lodged between plates or in ionizer Remove object.
Bent plates or media grille for media EAC Straighten.
Broken or deformed arc test button assembly Replace or repair.
Humming Noise Improper wiring connections Check wiring.
Loose ionizer wires Replace or repair.
Excessively dirty ionizer or collector Clean as per Maintenance
Instructions, Owner's Manual
Air Cleaner Doesn't Lack of power to cells due to improper alignment of Adjust alignment or replace spring.
Clean Dirt contact spring on power door to cells in top guide
Defective interlock plug or receptacle Replace.
Air volume too great Reduce air volume to design cfm.
Leaks in ductwork on downstream side of air cleaner Seal.
Dirty air not being delivered to air cleaner Insufficient air — check return air
grilles for obstruction by furniture,
drapes, etc.,and remove, check blower
for proper air flow.
Damaged or improperly placed dirt collecting pad Replace or reposition as per Mainten-
(media-type only) ance Instructions, Owner's Manual.
Uneven air distribution across face of unit which may
be indicated by uneven loading pattern of dirt in
Install turning vanes or air baffles
collector section of air cleaning cells
The entering air side of collector stage should be evenly
oi if--* mwim sir 5^
covered with dirt. In the case of the 020 sized units, each
cell should have an even loading pattern.
Radio or T.V. Accumulation of foreign particles lodged in ionizer Remove.
Interference section
Unit improperly grounded Provide good ground to unit.
Ground line of power supply not properly grounded Correct same.
Loose ionizer wires Replace.
Loosely connected components, or loose connections Tighten.
Defective power pack Replace.
Dents in collector section of ionizer section Straighten.
Damaged dirt collecting pad (media-type only) Clean or replace.
Improperly installed dirt collecting pad (media-type
only)
Reposition.
White Dust on Occasionally a "white dust" might be noticed in bed- Only air taken thru return grilles is
Furnishings rooms or newly furnished rooms. This is mainly com­
posed of lint which because of its weight, settles before
it reaches your unit. This is not mixed with airborne
dirt. It has no staining or soiling properties and will cleaned.
j lessen as the excess lint works out of fabrics.
f