Product Manual

Troubleshooting
76 firstAir screw compressor FAS03 – 37
Fault description
Cause
Remedy
Personnel
Screw compressor dis-
charges via safety
valve
Minimum pressure
valve blocked
Clean or replace minimum
pressure valve
Manufacturer
Safety valve faulty
Check safety valve and re-
place if necessary
Manufacturer
Oil separator clogged
Replace the oil separator
Qualified person-
nel
“High pressure” in dis-
play
Oil separator clogged
Replace the oil separator
Qualified person-
nel
Higher outside pressure
present in compressed
air network
Equalise outside pressure or
disconnect from the network
Qualified person-
nel
Screw compressor
does not start automati-
cally or does not con-
vey after being
switched off before-
hand by reaching the fi-
nal pressure or from
idle
Network pressure set
too high
Reset network pressure
Trained person
Interruption in the
power circuit
Check power circuit for inter-
ruption
Qualified electri-
cian
Ambient temperature
below +1 °C, message
Install auxiliary heating or reg-
ulate temperature of compres-
sor room, and also contact the
manufacturer
Qualified person-
nel
Switching times are ac-
tivated in the circuit
Check switching and pressure
times in the circuit
Trained person