115
Dryer turns off
for no reason.
Turned off by the low pressure switch or by the electronic controller.
The refrigerant is leaking or the hot gas “by-pass” valve is not set,
makingthe evaporation pressure very low.
Get in touch with Schulz
Authorized-Technical/
Distributor.
High loss of
pressure in
dryer.
Filtering element clogged.
Coalescent elements saturated by particles and oil preventing the flow
of compressed air.
Check the indicator of restriction of the coalescent filters.
If they show restriction, replace them.
Heat exchanger clogged by formation of ice.
If, for any reason, the evaporation temperature drops too much below
0.0°C, a layer of ice may build up within the heat exchanger, clogging
the passage of compressed air.
With the dryer on and compressed air passing through it, check if the
electronic controller is indicating temperatures below - 1°C. If so, turn
off the equipment and contact a SCHULZ AUTHORIZED DEALER.
Heat exchanger is obstructed by pollutants. If the correct coalescing
filters are not installed on the dryer, the heat exchanger can be obs-
tructed by pollutants that will lodge in its interior.
Keep the air dryer turned off for 30 minutes with compressed air
flowing through it. (Attention: during this period the dryer will allow
moisture into the network). If after this period the pressure loss per-
sists, the dryer may be obstructed by pollutants. In this case contact a
SCHULZ AUTHORIZED SERVICE PROVIDER.
High
temperature
throughout
the dryer.
Dryer is undersized.
Air flow is too much for the capacity of the equipment.
Get in touch with Schulz
Authorized-Technical/
Distributor.
Dryer is undersized.
High room temperature and/or compressed air.
Refrigerant leakage.
Refrigerant flow causes equipment overheating.
Condenser is dirty.
If the condenser is dirty, the air flow will be blocked and not let the
heat exchange with the room temperature and force an increased
pressure on the condensation.
Clean the condenser as the
instructions show,
of this manual.
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