05311001B / Revision 4
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8 ROUTINE MAINTENANCE
8.1
Inspecting the calibration cap
Before each use inspect the calibration cap and its internal o-ring for signs of wear or
damage. Check that the hose connection is tight and that all parts are clean. If
necessary purchase a new calibration cap from Servomex or your Servomex agent.
8.2
Checking the mA output
If required, use the following procedure at any time to perform a check on a mA
output:
1.
Select
Service
mA output.
2.
Select the required 'Override' option.
3. Edit the displayed override value as described in Section 5.10.
4. Press the
soft key: an acceptance screen showing "No" will then be
displayed. Select "Yes" to apply the override.
Figure 38 - The mA override screen
5.
The mA output will now be set to the override value you have selected. Use
your control/monitoring equipment (connected to the instrument) to check that
the output is correct.
The milliamp output freezes at the override value as long as the 'Override'
screen is displayed. As soon as another screen is displayed, the milliamp
output value will be updated to reflect the corresponding gas measurement.
8.3
Checking the relays
If required, use the following procedure at any time to perform a check on the outputs
of the signal relays fitted to the analyser:
1. Select
Service
Relay.
2.
Figure 39 shows the relay state (energised or de-energised) that the relay
signals outputs will be set to when the override is active. Edit if required.
