Philips 862478 - Manual (Page 85)

Performance Procedures
Testing the Monitor 4-35
Calibration
Verification
Reset Pump
Operating
Time Counters
If the pump in the CO2 module is replaced, the Pump Operating Time counter should be reset
to start counting operating time for the new pump.
Note
When the Pump Op Time has been reset a "CO2 Equipment Malfunction" INOP will be
generated on restarting the monitor. To clear this INOP you must perform a flow check and
store the flow in Diagnostic Mode (select Store Flow).
Step Action
1 Reopen the 5% gas valve and allow the value to stabilize.
2 Check that the value displayed on the monitor is correct and within the tolerance
(see Step 2 in above section).
3 Disconnect the 5% calibration gas and connect the 10% calibration gas.
4 Open the valve on the flow regulator to allow 10% CO
2
gas to flow into the
monitor. Allow the value to stabilize.
5 Check that the value displayed on the monitor (X7) is correct and within the
tolerance (see Step 6 above). If one or both values are not within tolerances, the
CO
2
module must be exchanged.
Step Action
1 In the CO2 Test menu, select Pump Op Time.
2 Select Reset to Zero.