Maintenance And Service - thyracont VSM77E Betriebsanleitung

6 Maintenance and Service

Danger of possibly contaminated parts!
Contaminated parts can cause personal injuries. Inform yourself
regarding possible contamination before you start working. Be su-
re 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 VSM, please return the instrument for
repair and enclose a declaration of contamination (see next page).
The unit is not prepared for customer repair!
Defective sensor heads can be exchanged on-site by calibra-
ted replacement sensors (spare parts B_VSM77, B_VSM78 and
B_VSM79).
Malfunction of the unit which is caused by contamination or wear
and tear is not covered by warranty.
Error Messages and Malfunction
Problem
high measurement error
Pirani zero adjustment not
possible
»UR« via RS485
»ERROR1« via RS485 /
status LED cont. red
access code »7« via
RS485
Possible Cause
contamination, ageing,
extreme temperature,
maladjustment
measurement error
exceeds possible range of
readjustment
pressure under range
defective electronics or
sensor
error message / warning
Correction
readjustment, replace
sensor or send unit for
repair
replace sensor or send
unit for repair
(pressure is below range
limit)
send unit for repair or
replace sensor
see separate
documentation Thyracont
Communication Protocol
VSM-EtherCAT-200116
41