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8-5 Replacing the Filter (suction type gas detector)
When the filter of a flow checker which is a part of suction type gas detector becomes dirty, replace it with a new one. If
you keep using a dirty filter, it may decrease flow.
①
Loosen the fastening ring and detach the cup and O ring.
②
Detach the dirty filter by turning and twisting it.
③
Wash the inside of the cup with water and completely dry it.
④
Press a new filter in and upwards as far as it goes to attach it.
⑤
Attach the cup and O ring then fasten the fastening ring.
Fig. 22 Replacing the Filter of a Flow Checker FC-32
float
OUT
filter element
O ring
cup
fastening ring
IN
