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11-2 Replacing the Pump
The pump must be periodically replaced. As a general guideline, replace the pump after about
10,000 hours* of operation. However, the service life may vary depending on the conditions
where it is operated. Therefore, if it can no longer maintain a suction flowrate of 1.7 L/min, then
replace the pump.
* For instructions on checking the cumulative hours of pump operation, see 9-2-11 Confirming
the Pump Operating Time (page 63).
Replacement Frequency
Replacement Pump
Replace the pump after 10,000 hours *1 operation or when
the suction flowrate can not be maintained at 1.7L/min.
Pump for FLD-1
(080040-635)
*1 Varies depending on the measurement environment.
Replacing the Pump
(1) Pull on the two knobs at the bottom of the
pump cover and remove the pump cover.
(2) Disconnect the two tubes at the locations
indicated in the figure.
Dust unit