Owner's manual

ITEM
1
2
PART NUMBER
6292AOSHO3
77188693304
7718870HLM
142042
142021
152166
152598-l
152220
152178
152221
141869
9351-7
142374
152236
7cQ41AHo95
Figure 8-3. Air Lack Diaphragm Exploded View
c. Diaphragm Replacement.
WARNING
2. Turn air lock release handle, Figure 8-1,
fully counterclockwise to release any
pressure on the diaphragm.
Before performing any maintenance or
repair action on power positioner, shut off
supply air and signal air, and disconnect
any electrical supply or electronic signals to
power positioner. Isolate power positioner
from all systems connected to power
positioner. Severe injury or death may
result from large torque power positioner is
capable of producing, or from electrical
shock.
1. Remove power positioner from service, close
supply air shut off valve, and isolate
electrical power from power positioner.
3. Remove socket head cap screws (1.5, Figure.
8-3) and air lock housing (14) from power
positioner.
4. Hold rod sleeve (9), being careful not to
strip threads, and remove diaphragm stud
(13) and diaphragm (12) from power
positioner.
5. Make sure that diaphragm washer (10) and
diaphragm seat (11) are in place and install
new diaphragm (12), securing with
diaphragm stud (13).