Honeywell MP-953D Installation And Maintenance Manual page 5

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