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3582, 582i, and 3583
manifold (key 34D) of 3583 valve stem position
transmitters.
1. Remove the screw (key 34G), and lift out the
bypass handle or manifold.
2. Remove the gasket.
3. Apply lubricant (key 94) to both sides of the
replacement gasket when used with the bypass
assembly of 3582 valve positioners. Do not apply
lubricant to the gasket when the bypass assembly is
not used.
4. Set the new gasket in place on the four locating
pins and replace the bypass handle or manifold.
The case gasket (key 104) is located between the
case (key 1 in figure 20) and the bypass block (key
34A) in a 3582 valve positioner or a 3583 valve stem
position transmitter or the housing of the 582i
converter (key 1 in figure 26).
5. Remove the two mounting screws (key 105 in
figures 24 and 25; key 11 in figure 26) that hold the
bypass block or converter housing to the case and
remove the unit to expose the case gasket.
6. Install a new gasket and replace the bypass block
or converter housing.
Replacing the Nozzle O-Ring
Unless otherwise noted, key numbers are shown in
figures 21 and 23.
1. Remove the two screws (key 19C) that hold the
flapper and follower assembly (keys 19B and 19G)
to the adjustment arm (key 19A).
CAUTION
For proper operation, be careful not to
bend or twist the flapper or nick the
nozzle orifice during reassembly.
2. Carefully remove the flapper and follower
assembly for access to the nozzle (key 18 in
figure 20).
3. Loosen the locking nut (key 71), and unscrew the
nozzle (key 18).
4. Remove the locking sleeve (key 72) from the
nozzle adaptor (key 3). The nozzle adaptor is
bonded to the positioner case with adhesive (key 96)
and should not be removed.
30
5. Inspect the O-ring (key 73) on the nozzle adapter
and replace the O-ring, if necessary. If replacing the
O-ring, apply lubricant (key 94) to the O-ring before
installing it on the nozzle adapter.
6. Reinstall the nozzle onto the nozzle adapter,
leaving the locking nut loose.
7. Replace the flapper and follower assembly. Make
sure the letter ''T'' on the flapper is visible from the
front of the positioner or transmitter.
8. Perform the beam alignment and calibration
procedures in the Calibration of Valve Positioner or
Valve Stem Position Transmitter section.
Replacing the Relay
The relay is not field repairable. If the
relay is defective, replace the relay.
Use the following procedure to replace the relay
assembly. Refer to figure 20 for key number
locations, unless otherwise noted.
1. For valve positioners using a bypass, direct
action, and a full-range input signal, place the
positioner in bypass operation by moving the bypass
handle to BYPASS. Then, shut off the supply
pressure. For all other valve positioners and valve
stem position transmitters, isolate the control valve
from the system and shut off all pressure lines.
A difference between input and valve
positioner output pressure could
cause a transient bump in the
controlled system when the bypass
handle is moved to BYPASS.
2. Remove the 83L relay (key 32) from the back of
the case by loosening the two mounting screws (key
10, figure 22).
3. Reinstall the new relay assembly on the case,
making sure the O-rings (keys 13 and 15, figure 22)
are in place. Secure with the two mounting screws
(key 10, figure 22).
4. Resume operation by moving the bypass handle
to the POSITIONER position or by connecting the
valve positioner or valve stem position transmitter
and control valve to the system.
Adjusting the Flapper Pivot
Key numbers used in this procedure are shown in
figure 23.
Instruction Manual
June 2010
Note
Note
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