Ceiling mounted air filtration units
18
Problem
Probable cause
Solution
Filtration has
minimal effect
Valves do not
work properly
Lock all electrical breakers hooked up to the dust col
-
lector and bleed the pneumatic lines. Check for debris,
wear and tear or a break in the diaphragm valve by
removing the cover. Check for leaks at the solenoids
and on the pneumatic hoses. Replace and repair all da
-
mages. If the valves are frozen, check the air dryer or
install a heating element around the valves.
Wrong adjustment in
pulsation sequence
Check for cleaning delay and duration.
(Refer to sequencer card adjustment on page 2)
High level of humidity
loads the filters
Check the filtered material. Check for leaks. Take neces
-
sary measures to lower the humidity level.
Wrong filter material
Replace the filters as per the recommendations of
A.Q.C. Inc.
Air temperature is
higher than anticipated
Check for air temperature. Improve the situation
to obtain appropriate temperature.
Presence of static
electricity in collector
Ground collector and components.
Cleaning cycle light is
ON but nothing hap
-
pens.
Solenoids are not
wired properly
Check wiring between sequencer card and solenoids.
Defective solenoids
Check if solenoids work properly.
Defective sequencer
card
Check if sequencer card is defective by following
the manufacturer’s recommendations.
The alarm light is ON
(DCT-1000)
Alarm value is too low
Adjust to a higher value.
Alarm value is too low
Check and clean compressed air system. Replace car
-
tridges if normal pressure does not resume to normal.
The pneumatic data
hose is unplugged,
broken or clogged.
Check the pneumatic hoses connected to the DCP pres
-
sure module for any leak or tear. Replace if necessary.
