Flomega, liquid mfc’s/mfm’s warning, Caution – Brooks Instrument 5882/92 User Manual
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Installation and Operation Manual
X-TMF-FM-MFC-eng
PN 541-C-007-AAG
April, 2008
Flomega, Liquid MFC’s/MFM’s
WARNING:
It is important that this instrument be serviced only by properly trained and
qualified personnel. Proper purging techniques should be followed before removing
the flow controller from a system.
CAUTION!
Gasket for assuring IP65 protection should be handled carefully.
4-1
General
No routine maintenance is required to be performed on the models 5881/5892 other than
occasional
cleaning. It is recommended a non-residual solvent be used for cleaning the flow sensor and control valve.
If an in-line filter is used, the filtering element should periodically be replaced or ultrasonically cleaned.
4-2
Disassembly and Assembly
a. Electronic disassembly
1. Remove the four screws from the top of the cover and remove cover.
2. Remove the four screws which hold the pc-board assembly and gently pull the board from the base.
3. Disconnect the valve, output cable and sensor cable connector, from pc-board.
4. To reassemble, follow the above steps in reverse order.
b. Internal disassembly
1. Remove the insulation from the sensor assembly.
2. Remove the inlet and outlet connections.
3. Unscrew the 3 screws which hold the whole ssembly, two are located at the outlet body and one just
above the inlet body.
4. Gently pull the whole assembly from the base.
5. To reassemble, follow the above steps in reverse order. To assure IP65 protection a layer of silicone
must be laid inside and between the inlet/outlet holes of housing and body. Be sure a good thermal
contact is obtained between copper heatsink and housing.
c. Valve disassembly
1. Unscrew the four high tensile allen head key screws.
2. Gently pull the outlet body from the valve assembly, take care of the o-ring.
3. Remove o-ring from valve stem, before removing the coil assembly and adapter plate and pull gently the
valve stem out of the body, take care of the o-ring.
4. To reassemble, follow above steps in reverse order. Apply 3.5 Nm force to the screws (1) in a digital
pattern.
CAUTION!
By this operation the IP65 seal will be broken and has to be restored after
assembly.
Section 4 Maintenance