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9. PROBLEM SOLVING
The following is a list of problems that may occur on the instrument through its operating life. If the cause of
the fault is not easy to identify then we advise you contact UEI International Technical Support or an
International Distributor for expert advice.
INTERNAL FILTER
To protect the analyzer from water ingress a filter is installed inside the casing to protect the infrared
measuring system. This filter will block if care is not taken during sampling:
• Ensure any build-up of water in the probe line and water trap are removed as soon as possible.
• The external particle filter is changed regularly.
• The instrument is allowed to sample fresh air on a regular basis.
• The instrument samples fresh air for 3 minutes before switch off.
• Do not blow smoke from a cigarette into the instrument, the tar will clog the filter
and the unit will need to be sent in for service.
Fault symptom
• Oxygen too high
• Oxygen Error (FAULT)
• Infrared gas Error (FAULT)
• Analyzer not holding charge
• Analyzer not charging
• Analyzer does not respond to exhaust gas
• Oil temperature readings erratic
• Analyzer automatically switches off in
operation
Causes
• Air leaking into probe, tubing, water trap,
connector or internal to instrument.
• Oxygen cell needs replacing.
• Zero calibration fault
• Instrument has been stored in a cold
environment and is not at normal
working temperature.
• Oxygen cell or infrared bench needs replacing.
• Battery exhausted.
• Charger not giving correct output.
• Fuse blown in charger plug.
• Particle filter blocked.
• Probe or tubing blocked.
• Pump not working or damaged with
contaminant's.
• Temperature plug reversed in socket.
• Faulty connection or break in cable or plug.
• Battery below alarm level.
• Ambient temperature above 50∞C.
• Battery quickly discharging and is faulty.
