UEi Test Instruments KM940 - Manual (Page 27)

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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 Kane International
Service Department or an International Distributor for expert advice.
Fault symptom
Causes
• Oxygen too high
• CO
2
too low
• Air leaking into probe, tubing, water trap,
connectors or internal to instrument.
• Oxygen cell needs replacing.
• Oxygen Error (FAULT)
• Toxic sensor Error (FAULT) • Calibration time set too short and
instrument not allowed to stabilise
• Instrument has been stored in a cold
environment and is not at normal working
temperature.
• Oxygen cell or toxic sensors needs
replacing.
• Analyser not holding charge
• Analyser not charging • Battery exhausted.
• AC charger not giving correct output.
• Fuse blown in charger plug.
• Analyser does not respond to flue
gas
• Particle filter blocked.
• Probe or tubing blocked.
• Pump not working or damaged with
contaminents.
• Probe connected to pressure connector.
• Flue temperature readings erratic • Temperature plug reversed in socket.
• Faulty connection or break in cable or plug.
• Analyser automatically switches
off in operation.
• Battery below alarm level.
• Ambient temperature above 50°C.
• Battery quickly discharging and is faulty.
• Display shows dark lines and no
reponse from ON/OFF key.
• Fault has occured on the instrument
electronics and requires resetting. Contact
Kane International or Distibutor.
10. ANNUAL RE-CALIBRATION
Whilst the sensors have an expected life of more than two years in normal use it is
recommended that the analyser is re-calibrated at least annually. This is so that long term drift
on the sensors and electronics can be eliminated. Local regulation may require more frequent
re-calibration and users should check with appropriate authorities to ensure they comply with
relevant guidelines.