Troubleshooting; Condensate Drain; Drain Valve Maintenance; No Loss Condensate Drain - omi ESD Series Instruction And Maintenance Manual

7.0 TROUBLESHOOTING

SYMPTOM
A) Temperature
shown in display
higher than the preset
value.
B) Excessive air
pressure drop across
dryer.
C) Water present in air
downstream of dryer.

8.0 CONDENSATE DRAIN

8.1 Drain valve maintenance

•
Close the ball valve located on the filter/stop installed at the drain trap inlet.
•
Depressurize the trap by pushing the TEST button on the control panel.
•
Unscrew the plug in the end of the filter/stop to access the filter screen (F)
and clean it with a compressed air jet.
•
Reassemble and open filter/stop valve.

8.2 NO LOSS CONDENSATE DRAIN

Cod. 710.0159.01.00 Rev0A – 10.2011
POSSIBLE ORIGIN
•
High compressed air inlet temperature.
•
High compressed air flow.
•
High ambient temperature.
•
Fouler refrigerant condenser.
•
Low refrigerant charge.
•
Phases connected incorrectly.
•
Faulty refrigerant compressor.
•
Faulty fan.
•
Faulty fan pressure switch or thermostat.
•
Faulty electronic controller
•
Problems with circulator cabling.
•
Glycol circulator defective.
•
Glycol leakage.
•
Inlet / outlet piping reversed.
•
Temperature probe out of well.
•
Faulty refrigerant solenoid valve.
•
Ambient temperature below freezing.
•
Obstruction in air circuit.
•
Air by – pass valve close.
•
Condensate drain strainer fouled.
•
Faulty condensate drainer.
•
Faulty electronic controller.
•
High dew – point temperature.
•
Air by – pass valve open.
SOLUTION
•
Reduce air temperature to within design limits.
•
Reduce air flow to within design limits.
•
Increase ventilation rate of installation area.
•
Clean condenser.
•
Locate and repair leak and re-charge.
•
Connect the phases correctly.
•
Replace item.
•
Replace item.
•
Replace item.
•
Replace item.
•
Check cabling.
•
Replace circulator.
•
Check glycol circuit and connections, if necessary
replace flexible tubes and/or refill glycol tank to
correct level.
•
Connect properly.
•
Re-install.
•
Replace item.
•
Install dryer in heated space.
•
Locate and remove blockage.
•
Open valve.
•
Clean strainer.
•
Replace item.
•
Replace item.
•
See Symptom #A above.
•
Close valve.
(F)
1= Dicharge endurance (3 sec)
Interval between
2=
discharges (2 min)
16 - 275