KT-70E / KT-90E / KT-70SE User Manual Page 37 of 59 24 April 2018
9. Troubleshooting
To avoid damage to property or life-threatening injuries during the removal of faults
on the compressor, the following points must be observed:
- Eliminate the fault only if you also have the specified qualifications.
- Protect the compressor against accidental restart by pulling the power plug.
Also read the chapter "General safety instructions".
9.1. Tabular overview of possible malfunctions and suggestions to help eliminate the fault.
If faults occur during operation of the compressor, check for possible causes using the
following table If the fault can not be resolved by one of the measures listed, please
notify a service technician or the manufacturer.
9.1.1. List of Faults
Compressor does not reach pres-
sure
Leaking pipe or condensate
drain
1
st
stage inlet valve does not
seal
Faulty o-ring on female
Quick Disconnect
Replace with 010-70 o-ring
1
st
or 2
nd
stage overpressure
valves release air
Pressure between stages is
too high
Check inlet valve of follow-on
stage
Condensate oil leaking onto base
plate
Residual pressure in filter af-
ter motor is off forcing resid-
ual condensate out of pres-
sure relief valves
Bleed residual pressure in com-
pressor to zero after completing
operation
Final pressure valve releases air
Compressor does not start
Excess residual pressure in
the compressor
Open intermediate and final con-
densate drains to reduce back pres-
sure on motor before starting mo-
tor. Verify gasket on intermediate
drain screw did not create block-
age.
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