Maintenance And Service - thyracont VSM77D Betriebsanleitung

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Maintenance and Service

The unit requires no maintenance. External dirt and soiling can be removed by a
damp cloth.
Should a defect or damage occur on your VSM, please send the instrument to us
for repair and enclose a decontamination declaration.
Error messages and malfunction
Problem
high measurement error
zero adjustment of Pirani not
possible
0.5V < output signal < 1.0V /
"UR" via RS485
output signal < 0.5V /
"ERROR1" via RS485
Status LED continuously red
Access code "7" via RS485
VSM-de-171005
Downloaded from www.Manualslib.com
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 is not prepared for customer repair!
Defective sensor heads can be exchanged on-site by calibrat-
ed replacement sensors (spare parts B_VSM77, B_VSM78 or
B_VSM79).
Malfunction of the unit, which is caused by contamination or
wear and tear is not covered by warranty.
Possible Cause
contamination, ageing,
extreme temperature,
misadjustment
measurement error exceeds
possible range of
readjustment
pressure under range
defective electronics or
sensor
Error message / warning
manuals search engine
Correction
readjustment,
replace sensor or
send unit for repair
Replace sensor or
send unit for repair
-9
(pressure < 5x10 mbar)
send unit for repair or
replace sensor
see separate documentation
Thyracont Communication
Protocol