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7. Troubleshooting
This troubleshooting does not mention the possible cause of all malfunction but simply shows it to
help the cause research of probable malfunction.
Trouble Cause
Treatment
Power can not be on
・
Empty batteries
・
Put batteries in correct way by
seeing the battery replacement.
(See 5-1.)
・
Batteries are consumed up.
・
Wrong polarity of battery
・
Time shortage to press Power
switch
・
Hold pressing for approx. 5 sec.
(Until displayed)
No pump running
・
No measurement and pump
stops funning (Display comment)
・
Make re-operation of pump
(See 2-6)
No pump suction
・
The pipe of IN, OUT of filter or
tube etc may be removed or
clogged.
・
Check the clog of filter pipe or
twist etc and treat it correctly
(See 5-3 and 2-5)
Zero and span adjust-
ment for O2 is not
available.
・
Is sensor life period in valid?
・
The validity of sensor is expired.
Replace it to new one.
Zero “0.0”%LEL of
gas display is flickering
・
Zero point is deviated.
・
Check that there is gas free
around and make zero adjust.
(See 2-4)
“100.0vol%”
flickering
・
Zero point or gas sensitivity is
deviated.
１．
Make zero adjustment.
(See 2-4)
２．
When not adjusted to reading
value, make gas calibration.
(See 5-2)
