Honeywell VP513A, Руководство пользователя, Страница: 3 / 6

DlAPHRAGM REPLACEMENT (See Fig. 2):
1.
Shut
down air supply to operator.
2. Using a screwdriver, draw the valve stem retainer
from the locked position.
3. Back off setscrews and lift operator from
valve. 30 NOT scratch or bend valve stem.
4. Remove the two allen
h e a d
cap
screws in the base of
The main spring
care to prevent stri is under compression. Use
5. Remove the operator cover n nting screws
Remove defective diaphragm
6. Install new diaphragm and reassemble. Be careful not
to pinch or cut the new diaphragtn during reassembly.
i DE
SPRlNG C U P
SPIDER
P L U G
2698
Fig. 2. Details of VP513A
PACKING REPLACEMENT (See Fig. 2)
NOTE: Shut down the system when repacking the
VP5 13B models. The VP5 13A can be repacked
without the system shutdown by pulling the
valve stem
all the way up
allowing the O-ring
to seal off any leakage through the
b et
CAUTION
The controlled medium pressure holds the O-ring
seal in place. DO NOT depress valve stem while
repacking.
1.
2.
3.
4.
5 5. .
6.
With the operator removed, inset-r a nail, awl. pin,
or similar instrument into the 1/16 in. diameter hole
near the top of the valve stem, Prevent stem from
turning and remove the stem button
, Impor-
tant: DO NOT remove the setscrew from the top of
the button.
Pull s up and remo
ing spacers
See Fig. 3 for exploded view of packing components.
Inspect valve stem at this time to dctermine its condi-
tion.
Glean spacers, packing nut, spring and exposed por-
tion of stem with tricloroethylene or similar solvent.
Lubricate stem, spring, spacer and each new packing
ring with lubricant, Part No. 309535.
Reassemble packing components.
CAUTION
DO NOT force the new packing rings over the
threaded end of the valve stem. Carefully screw
them over the threads to avoid
damage to thc ring.
S T E M BUTTON
PACK I NG
P A C K I N G R I N G
PACKING R I N G
S P A C E R
P A C K I N G RING
S P A C E R
B O N N E T
2519
Fig. 3. Packing Assembly
75-1707