Honeywell MP-953D User Manual

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‘- Bb
b&REPAIR AND ADJUSTMENT PROCEDURES FOR HONEYWELL MP-953B, MP-953D,
OR MP-953F PNEUMATIC OPERATORS USED ON ARMSTRONG HUMIDIFIERS
11.
12.
13.
14.
15.
16.
Place the operator base (26)' onto the frame (29), and
secure it in place with screws (25).
Invert the operator
back to its upright position.
Place the diaphragm (21) and follower (38) into the
frame (29).
Place the washer (32) around the top of the support
(24), and turn on the nut (34). Tighten securely.
With outer edge of the diaphragm (21) in the groove of
the frame (29), place the cove-r (33) over the frame.
Align the screw holes.
Attach the cover with the cover screws (31). Tighten
securely.
Install the -pneumatic operator in accordance with
Section.11.
V.
CHANGIN G THE ROLLING SEAL
To
1.
2.
3.
replace a rolling seal, perform the following steps.
4.
5.
6.
7.
8.
Remove the pneumatic operator in accordance with
Section I.
Perform Section IV (CHANGING OPERATOR SPRINGS) steps 2
through 8 to disassemble the operator.
With the operator in the upright position, remove the
three screws (23) and ring (39) that secure the rolling
seal (22).
Remove the rolling seal (22). Then separate the cup
(37) from the old seal.
Place the cup (37) into the new rolling seal.
Install
the new seal in the frame.
Secure the new rolling seal (22) in place with the ring
(39) and three screws (23). Tighten securely. Be sure
that the edge of the rolling seal is in the groove in
the frame.
Perform Section IV steps 10 through 15 to reassemble
the operator. Be sure that the spring (30) is in
place.
Install the pneumatic operator in accordance with
Section II.
VI.
REPLACING THE HUMIDIFIER VALVE AND SEAT
To replace the humidifier valve and seat,
perform the
following steps.
1.
Remove the pneumatic operator in accordance with
Section I.
2.
Remove the bonnet assembly (15) from the humidirier
cap.
4

Honeywell MP-953D Specifications

General

Brand	Honeywell
Model	MP-953D
Category	Controller
Language	English