50
GA130001441_002_C0
– 09/2016
9.
Maintenance and Service
9.1
Maintenance
9.1.1
General Maintenance Information
For external cleaning please use a piece of dry cotton cloth. Do not use any aggressive or
abrasive detergents.
DANGER: Mains voltage
The instrument contains inside components at a high voltage. Never introduce
any objects into the openings of the instrument. Protect the instrument against
moisture. Do not open the instrument.
9.2
Troubleshooting
9.2.1
Fault Indication
A malfunction affecting the COMBIVAC CM 51 is indicated by an error message on the
display. (
Chapter 9.2.2 Error Messages, page 50)
9.2.2
Error Messages
Error (display)
Fault cause and remedy
Measurement signal from the gauge head
significantly below the permissible range.
Measurement signal from the gauge head
significantly above the permissible range.
Sensor error. Malfunction affecting the connection to
the gauge head. The message will only be displayed
in the display field for the affected measurement
channel. Acknowledge by pressing any key.
No gauge head connected to the measurement
channel. The status message disappears after 30
seconds.
Error affecting the switch-on or switch-off channel.
No switch-on or switch-off threshold has been
defined for the PENNINGVAC gauge head
(malfunction of the THERMOVAC gauge head, for
example).
Filament broken. Filament of the THERMOVAC
vacuum gauge head is defective. The error
message persists until the sensor is replaced.
Table 24
–
Error messages
