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Instruction Manual
June 2008
through 10 of the Assembling the Summing Beam
Assembly procedure. Assemble the flexure
adjustment on the minor loop feedback flexures and
check for clearance.
11. Check the supply relay head (key 15) and
nozzle relay head (key 14) to ensure they are
centered in the diaphragms. If not, loosen the
connecting screws (key 50) and center.
12. Slide the flexure adjustment (key 156) to the
proper X dimension per figure 14 and tighten the
socket head screw (key 55). For 3611JP and
3621JP positioners only, install the parallel flexure
(key 179) with the two socket head screws and lock
washers (keys 180 and 181). The parallel flexure is
not used on positioners with 585 size 100 actuators.
Assembling the Reversing Plate and
Gasket
Refer to figure 25 for key number locations while
assembling the reversing plate and gasket.
Install the reversing plate gasket (key 24) and
reversing plate (key 23) with the reversing plate
screw (key 49). When installing the gasket, make
sure one of the three gasket holes is over the
exhaust slot in the positioner case (key 115A). If
direct action is required, adjust the reversing plate so
the letter D is showing and the letter R is entirely
covered. If reverse action is required, adjust the
reversing plate so the letter R is showing and the
letter D is entirely covered. Tighten the screw
(key 49).
Assembling the Gauge Block
Refer to figure 26 for key number locations, unless
otherwise indicated, while assembling the gauge
block.
1. Apply lubricant (key 153) to the four O-rings
(key 159) and install in the positioner case
(key 115A, figure 25). Attach the gauge block
(key 158) with the two socket head screws
(key 187). During assembly of the gauge block,
ensure that the O-rings stay in place to avoid leaks.
2. Assemble gauges [keys 79 (not shown), 80,
and 81], pipe plugs (keys 72 and 78), or tire valves
(key 73, not shown) as applicable to the gauge block
(key 158). Apply sealant (key 154) to the threads of
the gauges, pipe plugs, or tire valves.
3. If other positioner components are removed, refer
to the appropriate reassembly procedures and
assemble the positioner completely.
3610J and 3620J Positioners
4. Plug the relay A and relay B output connections
and apply 2.0 bar (30 psig) to the instrument
connection and 2.4 bar (35 psig) minimum supply
pressure to the supply connection.
5. Using soap solution or some other solution
compatible with Nitrile rubber, check the gauge block
O-rings and any other O-rings, gaskets, or
diaphragms which were disassembled for leaks.
Assembling the 3622 Electro-Pneumatic
Converter
Refer to figure 30 for key number locations, unless
otherwise indicated, while assembling the converter.
1. If the 3622 electro-pneumatic converter was
removed from the pneumatic positioner, apply
lubricant (key 17) to the four O-rings (key 36), and
install the O-rings in the case (key 115A, figure 25).
Ensure that the O-rings remain in place. Attach the
converter assembly to the case with the two socket
head screws (key 35) and tighten the socket head
screws.
2. Install gauges (key 43), pipe plugs (key 37), or
tire valves (key 41, not shown) as applicable to the
converter. Apply sealant (key 39) to the threads of
the gauges, pipe plugs or tire valves.
3. If the converter module was removed from the
pneumatic positioner, apply lubricant (key 17) to the
O-ring (key 26) and insert the converter module into
the housing.
4. Replace the two screws (key 30) and tighten
them.
5. If other positioner components are removed, refer
to the appropriate reassembly procedures and
assemble the positioner completely.
6. Connect the supply tubing, output tubing, and
conduit to the converter.
7. Connect the wiring to the terminal block by using
installation procedures.
a. If an internal grounding wire is used inside the
housing compartment, connect the wire to the
housing ground screw (key 31) and replace the
cap (key 20).
b. If an exterior grounding wire is used, connect
the grounding wire to the exterior ground screw
(key 31).
8. Plug relay A and relay B output connections and
apply 2.4 bar (35 psig) to the supply pressure
connection. Apply a 20 milliampere DC input signal
to the converter.
9. Check for leaks using a soap solution or other
solution compatible with nitrile; check the O-rings
37
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