OMEGA AIR RDP Series, Installation And Operating Manual

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12 Maintenance
During the maintenance work on the refrigeration air dryer, turn it off and wait 30 minutes for it to
cool down. Some components can reach high temperatures during operation.
Weekly check that the dew point shown on the controller is appropriate. Also check the correct
operation of the condensate drainage system. In case of impurities on the condenser, clean them.
Monthly clean the condenser with an air jet from the inside to the outside. Repeat the procedure from
the opposite direction, making sure that you do not damage the aluminium ribs of the condenser.
Annually check for potential refrigerant leakages. Measure and record the compressor and condensing
temperature.
The condensate drain is designed to to work for more than 4 000 000 condensate releases. In case of
malfunction use the condensate drain service kit for refurbishment.
13 Troubleshooting technical problems
During the maintenance work on the refrigeration air dryer, turn it off and wait for at least 30 minutes
for it to cool down. Some components can reach high temperature during operation. Avoid contact
with these components until they completely cool down.
SYMPTOM POSSIBLE CAUSE - PROPOSED ACTIVITY
The dryer does not
start ● Make sure that the system is connected to a power source.
● Check the electrical installation (internal and external).
The compressor
does not work
● Activated internal thermal protection of the compressor - wait 30 min, then try
again.
● Check the electrical installation.
● If installed, replace internal thermal protection and / or start -up relay and / or
start-up capacitor and / or working capacitor
● If installed - The HPS pressure sensor has been activated.
● If installed - The LPS pressure sensor has been activated.
● The TS thermal safety switch has been activated - see the relevant section of
these instructions.
● If the compressor still does not work, replace it.
The condenser fan
does not work
(air-cooled units)
● Check the electrical installation.
● The PV pressure switch is defective - replace it.
● Leakage has occurred in the cooling circui t - get in touch with an engineer in
the field of refrigeration.
● Replace the fan if it still does not work.
The dewpoint is too
high
● The dryer does not start.
● Dew point sensor incorrectly detects temperature - check if the sensor is fully
inserted into the sleeve.
● The compressor does not work.
● Ambient temperature is too high, or ventilation is too low - ensure adequate
ventilation.