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Medium Flow Compressed Air Dryers - IOMI.
Loss of Outlet Dewpoint Continued...
Check Parker Dewpoint Sensor Check the Parker Dewpoint Sensor is clean
Remove any particulate with low pres-
sure compressed air
Check cartridge sealing
Check cartridge sealing on column showing
low dewpoint
Check cartridge sealing on column showing
low dewpoint
Switch off dryer once both columns have
depressurised
Depressurise Dryer
Remove column top caps
Remove cartridges
Check cartridge seals are intact
Check cartridge seals are in wave groove
Reseat cartridges carefully
Replace column top caps
Introduce pressure slowly
Restart dryer
Check dewpoint for recovery
Check condition of outlet check
valve ball
Check outlet check ball for deterioration /
deformation
Switch off dryer
Depressurise Dryer
Remove check valve ball cover plate
Inspect ball for deterioration / defor-
mation
Replace if necessary
Replace cover plate
Introduce pressure slowly
Restart dryer
Check dewpoint for recovery
Check for back flow
Check a non return valve is installed at dryer
outlet
Check purge assembly for blockage &
clean if necessary
Check QRV for blockage and clean if
necessary
Check desiccant cartridge for signs of
carbon dust (OFAS/FBP)
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