Use and Care Manual

16
Purge Test
General
The purge needs to be tested during:
x the first commissioning
x routine inspections,
x the depressurization of the dryer for maintenance operations.
Operating procedure
1. Press the down arrow and hold for 1 second. Check that the solenoid valve opens and that the condensates drain away.
Check that the purge icon is illuminated, on the controller interface.
2. The solenoid valve closes and the purging of the condensates stops.
3. Wait for 5 minutes and verify that the purge takes place properly again.
4. Correct the purge time if required by referring to §5.4
Note: The opened solenoid valve will close automatically at the end of the programmed purge duration.
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SAFETY SYSTEM
The dryer has a safety system which disconnects the device when triggered.
Electrical circuit
The MOTOR PROTECTION allows disconnecting the dryer through the thermal relay when the air compressor operates
under overload.
Restart
1) Resolve the problem that caused the device to shut down (refer to Corrective maintenance or contact MAT Ind).
2) Press the start button to restart the dryer.
ROUTINE MAINTENANCE
Daily maintenance
o Check that the automatic purge normally evacuates the water and compressed air.
o Check that there are no air leaks on the inlet and outlet connections.
o Verify the temperature of the compressed air at the inlet and the ambient
temperature are within operating parameters of the dryer specification.
o Clean the condenser of the dryer at regular intervals (once every two weeks).
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Maintenance
Clean the condenser regularly using a vacuum cleaner, brush or a
compressed air gun. Dirty or plugged condenser coils will impact
performance of the dryer and can lead to overheating of the compressor
and possible shutdown and/or damage of the dryer.
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Ensure that the blades and the thin aluminum plate of the condenser do
not get bent out of shape while cleaning.