9 Fault Recognition and Rectification
9.1 Basic instructions
There are 3 types of fault:
■ Warning:
─ Warning messages
W
■ Fault (with indication):
─ Alarm messages
A
─ System messages
Y
─ Diagnostic messages
D
■ Other faults (without indication): See chapter 9.2
The messages valid for your machine are dependent on how the individual machine is equipped.
1. Do not attempt fault rectification measures other than those given in this manual!
2. In all other cases:
Have the fault rectified by an authorized KAESER SERVICE representative.
Further information Detailed information for the various messages can be found in the user manual
SIGMA CONTROL 2 .
9.2 Other Faults
Fault
Possible cause
Remedy
Machine does not run.
Control transformer not wired.
Connect control transformer in
accordance with the electrical
diagram.
Machine with refrigeration dry‐
er:
Connect dryer transformer in
accordance with the electrical
diagram.
Machine runs but produces no
compressed air.
Inlet valve not opening or only
opening partially.
Call authorized KAESER Serv‐
ice representative.
Venting valve not closing.
Call authorized KAESER Serv‐
ice representative.
Leaks in the pressure system.
Check piping and connections
for leaks and tighten any loose
fittings.
Air consumption is greater than
the capacity of the compressor.
Check the air system for leaks.
Shut down the consumer(s).
Hose coupling or maintenance
hose still plugged into the
quick-release coupling on the
oil separator tank.
Remove coupling or mainte‐
nance hose.
9
Fault Recognition and Rectification
9.1
Basic instructions
52
Operator Manual Screw Compressor
SM Tri-Voltage, SIGMA CONTROL 2
9_5875 33 USE
