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６－３．Filter replacement
For filter (cotton) inside of filter with flow monitor, check it before use and when it gets
dirty, replace it.
（1）Turn the curling part in depth for filter tube with flow monitor and open the inside.
（2）Remove the cotton of it by tweezers etc.
（3）Put the cotton filter uniformly on even base inside of filter tube and return back the
filter tube in reverse procedure.
６－４．Sensor replacement
When the following phenomenon took place, it will be the life end of sensor.
(1) It can not calibrate.
(2) Reading can not go back if make air calibration.
(3) The reading is unstable.
When the sensor replacement is needed, contact RIKEN KEIKI or nearest agent.
６－５．Daily check and regular check
（1）Daily
・Is there any damage for switches, lamps, display and panel ?
・Pump suction performance check (Does the pump moving sound correctly ? Can any abnormal
sound be heard ?)
・Performance check of flow monitor (Check that the position of flow is correct at pump “ON”
and “OFF”.
・Battery voltage check
（2）Regular maintenance check
The regular maintenance is recommended to receive from the qualified service agent once in
a year.
Caution
・
Do not put cotton filter too much inside.
・
When suction flow is too much, it will be difficult to monitor accurately.
＊Note
・The cotton filter replacement should be make once in a month.
Low let
