AEC Self Cleaning Continuous Filters - Manual (Page 36)

Self Cleaning Continuous Filter Chapter 6: Troubleshooting 35
Problem Possible cause Corrective action
Defective timer.
Return timer to us for repair or
replace.
5. High differential pressure.
Cont’d.
Bags too tight.
If bags were cleaned, they may
have shrunk and are too tight to
permit proper flexing. Replace
bags.
Solenoid valves not working.
Establish power to solenoid and
proper wiring to timer. Check
solenoid and if O.K. change
wiring at timer to next unused
terminal and move program
wire to highest numbered
terminal used or replace timer.
If solenoid defective, replace.
Remove debris in diaphragm
valve.
Remove solenoid valve cover
and clean.
6. Improper pulsing.
Continuous air flow through
diaphragm valve.
Leak in tubing between
solenoid and diaphragm valves.
Fan running backwards. Correct fan rotation.
High differential pressure.
See possible causes &
corrective actions for problems
2, 3, and 5.
Fan belt slippage. Tighten or replace belts.
Air short-circuiting between
collection point(s) and fan.
Stop leaks.
Additions to system. Increase system capacity.
Use proper shutdown
procedure. Inspect piping for
foreign material and remove.
Bags should feel soft to the
hand or be replaced.
Establish power to solenoid and
proper wiring to timer. Check
solenoid and if O.K. change
wiring at timer to next unused
terminal and move program
wire to highest numbered
terminal used or replace timer.
If solenoid defective, replace.
7. Insufficient dust collection.
(System volume too low)
System blockage.
See possible causes & corrective
actions for problem 5.