Table des Matières
Publicité
Troubleshooting
Fault
The display does not light up.
The outputs are not activated.
The differential pressure
reading is not correct.
The cleaning cycle is
not carried out.
Do alarm messages appear?
Do the alarms fail to activate
signalling devices?
Does post-cleaning start
during normal cleaning?
Does post-cleaning fail to start
when the normal cleaning
cycle ends?
Does the economiser
occasionally reset?
The value of 0.0 inch WC
does not appear on the
display when the fan is off.
Startup Procedure
1. Begin with a system check.
a. Check the status of the fan, discharge devices, ductwork, electrical wiring, and compressed air connections.
b. Ensure that the filters are in the clamped-down position.
c. Check that the collector doors are closed, latched, and the slide gate is in the open position.
2. Supply compressed air and electrical power to the collector.
3. Check the fan for the direction of rotation arrows.
4. Turn on the collector fan and hopper devices. The goal is to visually inspect the fan and ensure it rotates in the direction indicated by the
wheel rotation arrows on the fan.
5. If the filters are not pre-coated, the amount of excessive air flow may cause premature filter failure. Pre-coat your filters to avoid this problem
Always inspect fans regularly to ensure they are running in the correct direction and do not vibrate excessively or cause any unusual noises.
6. Verify that the airlocks are operating and the slide gates are open.
Possible Cause
Burnt fuse.
Incorrect output voltage. Wiring to
solenoid valves.
Obstructed pneumatic connections.
Damaged pipes.
The set cycle start threshold (F08) is too high
and therefore the cycle is not activated.
System wiring errors. No power to alarm devices.
Fan threshold (F12) set too high.
Fan threshold (F12) set too low.
Check the there is no filtered pulse load on the
power line (spot welding machines, welding
machines, plasma cutters etc.).
dP zero calibration (F07) is not correct
Solution
Check the protection fuse on thepower voltage. Check
that the power voltage is present and compliant with that
required for the device (terminals 1 and 3).
Check that the unit and solenoid vale output voltage agree.
Check wiring between economiser and solenoid valves.
Check that the differential pressure is 0.00 inch WC
with the pipes disconnected. In this case, check that
the connection pipes between device and filter are not
obstructed or damaged.
Adjust the start-up pressure threshold or set the
economiser to MANUAL mode (F01=0).
Check the alarm code with the table.
The alarm devices must be powered by voltage external to
the economiser. Activating to open the respective relay.
Change the post-cleaning start-up threshold (F12) lowering
it.
Check that the measured pressure is lower than the
post-cleaning activation pressure when the fan is off.
Install a filter on the power line of the economiser,
if needed.
Calibrate the dP zero by appropriately setting the
parameter F07 or running the self-calibration function
explained on page 10.
33
Publicité
Table des Matières
