Emerson Rosemount Analytical OPM 4000, Instruction Manual

Page: 108 / 118

Instruction Manual
IM-105-4000, Rev 1.3
October 2008
OPM 4000
D-4
2. Mount the air purge adapter assembly as shown in Figure D-2. Mount
the assembly to the OPM air window assembly (item 4) and secure with
bolts and nuts. Torque in cross fashion, 25 inch pounds, then 50 inch
pounds, and finally 85 inch pounds. The hinge pins must be on the left.
3. Retrieve adapter (3532B52H01) that was removed from the old check
valve. Install adapter into retrofit kit pipe coupling using Teflon tape on
pipe threads. Install this assembly into the air window assembly.
4. There are two air flow switches supplied (P/N1885). Install one onto the
pipe coupling on the air window assembly with the rubber coupling and
clamps.
NOTE:
Large end of rubber coupling mounts to air flow switch and smaller end
mounts to pipe coupling attached to the 3532B52H01 adapter.
5. Size the existing air hose length to connect the air flow switch,
Figure D-3, to the blower outlet using original stainless steel hose
clamps for mounting.
6. Remove the connector from the existing pressure switch wiring that
goes to the transceiver side.
7. Connect the air flow switch leads to the switch wiring with the wire nuts
or butt splices. Connect and wire air flow switches from transceiver and
retro reflector sides in series to TB1 on SSM mounting plate. See air
flow switches wiring diagram, Figure D-4, and system wiring diagram,
Figure D-5.
Figure D-3. Air Flow Switch