Thyracont VSH88D, Operating Instructions Manual

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5 Maintenance and Service
Danger of possibly contaminated parts!
Contaminated parts can cause personal injuries. Inform your-
self regarding possible contamination before you start working.
Be sure to follow the relevant instructions and take care of
necessary protective measures.
The unit requires no maintenance. External dirt and soiling can be removed by a
damp cloth.
Should a defect or damage occur on your VSH, please send the instrument to us
for repair and enclose a decontamination declaration.
The unit is not prepared for customer repair!
Defective sensor heads can be exchanged on-site (spare parts
B_VSH88 or B_VSH89).
Malfunction of the unit, which is caused by contamination or
wear and tear is not covered by warranty.
Error messages and malfunction
Problem Possible Cause Correction
high measurement error contamination, ageing,
extreme temperature,
maladjustment readjustment
0.5V < output signal < 1.3V /
"000000" via RS485
pressure under range (pressure < 5x10
-10
mbar)
output signal < 0.5V /
"1" via RS485
Status LED continuously red defective unit or sensor
send unit for repair
Status LED continuously
orange hot cathode filament 1
defective if appropriate exchange
sensor
"5" via RS485 Code unknown check sent telegram code
"7" via RS485 logic error
command cannot be
executed at the moment
zero adjustment not possible measurement error exceeds
possible range of
readjustment
send unit for repair