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MR850 Technical Manual * Revision J * Issued November 2005 * Ref. 185041340 (185041713 internal)
21
5 Maintenance Procedures
In order to keep your humidifier in good working order, it is necessary to perform maintenance
at regular intervals.
5.1 Maintenance Schedule
5.1.1 MR850 Humidifier
Annually
a. Check MR850 for physical damage:
• Check the mains cable for damage, replace if necessary.
• Check the heater plate for deep scratching etc., replace if necessary.
• Check the heater wire adaptor for kinks, abrasions and damaged connectors. Check
that the plugs couple with the sockets on the humidifier.
b. Carry out a full performance test. This procedure is detailed in section 8.
NOTE: A maintenance check sheet is given in Section 9.
5.1.2 MR850 Temperature Probe
Every Six months
a. Visually check the humidifier probes for physical damage:
• Check that the chamber probe's glass thermistor has not been damaged. Replace
probe if required.
• Inspect the chamber probe's glass thermistor for deposits or foreign material. Clean
probe as required.
• Check the probe cable for kinks and abrasions etc.
• Check that the probe connectors couple with the humidifier sockets.
b. A temperature accuracy check and flow accuracy check should be performed on the MR850
temperature probe as outlined in section 8.2.