Summary of faults
54 A190-930TX_EN_03_ 2009-02-06
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 documentation.
Abbreviation Component
PI Pressure gauge
V1 (Y1–Y2) Main inlet valve (solenoid valves)
V2–V3 Check valves
V4–V5 (Y3–Y4) Expansion valves (solenoid valves)
RV1–RV2 Check valves of regeneration gas return line
(optional)
Summary of faults
There are different fault types. In the case of most electrical faults (e. g. short
circuit, defective fuse etc.) the expansion valves V4/V5 close, the programme is
interrupted. In the case of some process faults, the dryer will continue to operate
for some time. Faults on the dryer become noticeable e.g. due to unusual noises
or dam pressures.
The following table shows who is allowed to remedy a fault: the owner's specialist
personnel or the manufacturer's service engineer.
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