Parker K-MT 1-8 - Identify and eliminate faults; Summary of faults

Summary of faults
50 K-MT1-8_EN_08—2014
Identify and eliminate faults
The following table provides information on what designatory abbreviations are to
be used for the various components. These designations are also found in the
technical ocumentation.
Abbreviation Component
PDI
Differential pressure gauge (only K-MT 6-8)
V1–V2 (Y2–Y1)
Main valves (solenoid valves)
V3–V4 (Y3–Y4)
Expansion valves (solenoid valves)
RV1–RV2
Check valves
RV3–RV4
Check valves of regeneration gas return line (optional)
Summary of faults
There are different fault types. In the case of most electrically caused faults (e.g.
short circuit, defective fuse, etc.) the expansion valve closes and the regeneration
is interrupted. In the case of some process faults, the dryer will continue to
operate for some time. Other faults on the dryer become noticeable e.g. due to
unusual noises and ran pressures.
The following table shows who is allowed to remedy a fault: the owner's specialist
personnel or the manufacturer's service engineer.
Table of possible faults
Fault
Possible cause
Remedy
Specialised personnel
Service technician
No pressure build-up
The compressed pressure system
upstream from the dryer is not
pressurised.
Check whether the compressed
pressure system upstream from the
dryer is pressurised. Eliminate any
faults in the compressed air system.

Excessive compressed
air consumption
Leakage
Check condensate trap at the upstream
filter; clean, if necessary.
 
Dryer cannot be
switched over
Solenoid valve Y1/Y2 cannot be
opened.
Check supply voltage, cable, contacts
and solenoid; replace, if necessary.
 
Solenoid valve Y1/Y2 cannot be opened
properly
(audible humming sound or valve
flapping).
Check supply voltage.
Check spring and solenoid; replace, if
necessary.
 
Control board defective.
Check fuse in supply line and in the
switchbox; replace, if necessary.
 
Power supply interrupted, cable broken.
Reconnect the unit to the power supply.

Compressor might be off.
Check compressor synchronisation
circuit.
Error in control programme.
Restart programme.
