General
The following remarks should be kept in mind:
• Keep the dryer clean.
•
On air-cooled dryers, brush or blow off the finned surface of the condenser regularly.
On water-cooled dryers, regularly check for water leaks.
• Inspect and clean the electronic water drain once a year .
7.8 Problem solving
Attention
Use only authorized parts. Any damage or malfunction caused by the use of
unauthorized parts is not covered by Warranty or Product Liability.
Apply all relevant Safety precautions.
Before carrying out any maintenance or repairs on the dryer, stop the dryer and switch
off the voltage.
Open the isolating switch to prevent an accidental start.
Isolate the dryer from the air net.
Faults and remedies (general)
Condition Fault Remedy
- Pressure dew-point too high Ambient temperature too high Check and correct; if necessary,
draw cooling air via a duct from a
cooler place or relocate dryer
Shortage of refrigerant Have circuit checked for leaks and
recharged
Refrigerant compressor does
not run
See below
Evaporator pressure too high See below
Condenser pressure too high See below
Automatic drain system
clogged
Have the system cleaned
- Condenser pressure too high
or too low on air-cooled dryers
Fan control switch out of order Replace
Fan or fan motor out of order Check fan/fan motor
Ambient temperature too high Check and correct; if necessary,
draw cooling air via a duct from a
cooler place or relocate dryer
Condenser externally clogged Clean condenser
- Condenser pressure too high
or too low on water-cooled
dryers
Cooling water system clogged Have cooling water system cleaned
Cooling water temperature too
high
Check and correct as necessary
- Compressor stops or does not
start
Electric power supply to
compressor is interrupted
Check and correct as necessary
Instruction book
108 9829 3178 63
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