Omega FMA1700A, User Manual, Page: 15 / 40

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6.2.2 FMA1700A/1800A Series Max Flow 10 L/min models
1. Unscrew both the inlet & outlet compression fittings from the meter using an
11/16" open box wrench.
2. Unscrew the RFE sub ass’y from the unit’s inlet side using a flat 1/2" wide screwdriver.
3. Push a pin/ screw driver dia 3/32-1/8" thru the adapter’s holes, then unscrew
a retaining nut using a 1/4" Allan wrench.
The 50 micron filter screen will now become accessible.
4. De-attach the RFE element from its adaptor using a 5/32" Allan wrench.
5. Clean or replace each of the removed parts as necessary. If alcohol is used for
cleaning, allow time for drying.
Inspect the flow path inside the transducer for any visible signs of contaminant.
If necessary, flush the flow path through with alcohol. Thoroughly dry the flow
paths by flowing clean dry gas through.
Be sure that no dust has collected on the O-ring seal, prior reassembling.
6. Re-assemble the RFE sub ass’y, and then carefully screw it into the inlet side.
Do not attempt installing the RFE sub ass’y into the unit’s outlet side!!
7. Screw in the compression fittings.
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Adaptor
O-ring #11
Filter Screen
Retaining Nut
RFE