Parker Zander HDK-MT 10-100, Руководство по эксплуатации

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Summary of faults
42 HDK-MT350_EN_04
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.
Used abbreviation Component
PI Pressure gauge
Y1–Y2 Main valves (Solenoid valves)
Y3–Y4 Expansion valve (Solenoid valves)
Y5
Pressure build-up valve (Solenoid valve)
V1–V4
Check valves
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 Y3/Y4 close and the program
stopps. 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 and
dam 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
Certain faults must be due to valves that are not properly opened/closed. For
measures to be taken in such cases, please refer to the bottom of the table.
Fault Possible cause Remedy
S
p
eci
al
ised
p
e
rs
o
n
n
e
l
S
er
vi
ce t
ech
n
ici
an
Dewpoint is not
reached
Operating pressure too low Increase operating pressure

Excessive differential pressure at
upstream filter
Check differential pressure at the upstream
filter; replace filter element, if necessary.
 
Compressed air volume flow too high Reduce compressed air volume flow.

Inlet temperature of compressed air
too high
Reduce inlet temperature of compressed air
or install preliminary compressed air cooler.
 
Condensate trap (optional) at the
upstream filter is not working properly
Check condensate trap (optional); clean or
replace, if necessary.
 
Drying agent contaminated or out of
date
Inspect upstream filter for contamination;
replace filter element, if necessary.
 
Inspect drying agent for contamination;
replace, if necessary.
 
Sensor defective Replace the sensor.

Control board defective Check fuses (switchbox, supply line); replace
board, if necessary.
