DOM0000019-EN, Revision B Page 3 of 4
E. PURGE DURATION (message 5) –The amount of time the
station purge valve is open. Factory set at 0.7 seconds. Press the
down arrow on the cursor (button 2) to access the function value.
Press the ALT button then the OK button to make the value
editable. Use the cursor to
change the value. Left and
right moves between the
seconds and milliseconds
and the up and down
arrows increase and
decrease the values. If you
wish to cancel the change
you made, press the ESC
button to reset the value to
what it was. When you are
satisfied with the value,
press the OK button to accept the value then press the ALT
button to exit the edit mode. Press the down cursor arrow to
return to the main screen.
Status Messages
A. RUN (shown on the main screen) –When the system is operating
normally, one of these messages will be displayed to show when
the next purge sequence will begin. Which message is shown
depends on whether you are purging by time or by number of
cleaning cycles.
B. STOP (shown on the main screen) –When the clean sequence is
in progress, this message is displayed to show which station is
being cleaned.
Action Messages
A. NONE (message 00) –When the system is turned off by pressing
ON/OFF (button 1), the display will show this message. To start
the system, press ON/OFF (button 1).
Solenoid Valve Operation
This unit is equipped with two solenoid valves. On each solenoid is a
manual operator. When air is supplied to the solenoids, pressing this
operator will operate the actuator it is connected to.
Customer Interface
A. DP START –This input is used with a Normally Open DP switch
contact. When the switch is above it’s set point for 5 continuous
seconds, the system will purge.
B. REMOTE CLEAN –Supply a normally open, monetary dry
contact between this input and power line to start a clean from a
remote location.
C. REMOTE PURGE –Supply a normally open, monetary dry
contact between this input and power line to start a purge from a
remote location.
D. CLEAN IN PROCESS –This contact output will be active (closed)
while the system is cleaning.
E. PURGE IN PROCESS –This contact output will be active
(closed) while the system is purging.
Maintenance
To service the filter unit, isolate it from the process air and electrical
supply using proper lockout/tagout plant procedures. Depressurize and
de-energize all sources of power.
Troubleshooting
Symptoms
AActuator doesn’t operate properly
BPurge valve will not operate properly
CLeakage at lid seal
DLeakage where drive shaft enters lid
EReduction in flow rate or high differential pressure
FDrop in filtrate quality
Possible Faults
AActuator doesn’t operate properly
1No power
aCheck to see if the filter system is receiving adequate
power.
bCheck to see if the filter system is set to the proper
voltage.
cCheck all wiring connections.
2No air
aCheck to see if the filter system is receiving adequate
air.
bCheck for air leaks.
cCheck to see if the air bleed valve is closed and the air
block valve is open.
dCheck to see if the air lines are connected to the
correct ports.
3Actuator seals have been destroyed
aOrder a factory repair kit and replace the seals.
4Faulty solenoid valve
aCheck to see whether the manual override button on
the solenoid valve actuates the cylinder
5Cleaning disc not cleaning the filter screen
aInspect and clean the filter screen.
bInspect and replace the cleaning disc.
BPurge valve will not operate properly
1No power
aCheck to see if the filter system is receiving adequate
power.
bCheck to see if the filter system is set to the proper
voltage.
cCheck all wiring connections.
2No air
aCheck to see if the filter system is receiving adequate
air.
bCheck for air leaks.
cCheck to see if the air bleed valve is closed and the air
block valve is open.
dCheck to see if the air lines are connected to the
correct ports.
3Actuator seals have been destroyed
aOrder a factory repair kit and replace the seals.
4Faulty solenoid valve
aCheck to see whether the manual override button on
the solenoid valve actuates the cylinder
5Damaged purge valve
aReplace or rebuild purge valve
6Debris caught in purge valve
aRemove debris from purge valve
CLeakage at lid seal
1Loose lid nuts/bolts
aTighten lid/nut bolts to
2Dirty lid sealing surfaces
aClean lid sealing surfaces