Graco 214706 Instructions Manual page 8

Service of the Air Operated Regulators
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 5.
1. Shut off the pump.
2. Close the ball valve at the regulator's air inlet.
Refer to Fig. 2.
3. Release all the air and fluid pressure in the regula-
tor and disconnect the air and fluid lines.
4. Remove the swivel union (23) and spring (40) from
the regulator body.
5. Remove the ball (20), seat (16), and gasket (15).
See Fig. NO TAG.
CAUTION
Use special care when handling the hard carbide ball
(20) and seat (16) to avoid damaging them.
6. Remove the six cap screws (1) while holding the
regulator cap (7) to the housing (6).
7. Remove the retaining screw (10), jam nut (13) and
washer (17) from the stem housing (18).
8. Remove the diaphragm (22) and gasket (26).
9. Remove the spring (3), valve stem (9), and gasket
(21) from the stem housing (18).
10. Thoroughly clean and inspect all parts. Replace
any parts that appear to be worn or damaged.
11. One at a time, place the gasket (26), diaphragm
r side down toward the bottom
PTFE
(22) – white
housing, and washer (17) on the stem housing
(18). Secure them with the jam nut (13). Torque
the jam nut onto the stem housing to 21–35 ft-lb
(28–47 NSm).
12. Install the valve stem (9), spring (3), gasket (21),
and retaining screw (10) in the stem housing (18).
Torque the retaining screw into the housing to
21–25 ft-lb (28–34 NSm).
13. Install the assembled parts in the housing (6).
14. On Model 214980, tighten the air line fitting (29)
into the cap (7). Torque to 21–35 ft-lb (28–47
NSm).
15. Install the cap (7). Tighten the six cap screws (1) in
the sequence shown in Fig. NO TAG, Bottom
View, and to the torque noted.
8
307212
Service
16. Install the gasket (15), valve seat (16), and ball
(20) into the housing (6).
NOTE: Seat may be turned upside down and reused.
17. Screw the swivel union (23), with the o-ring at-
tached and the spring (40) in place, into the inlet.
Torque to 23–27 ft-lb (31–36 NSm).
Models 214980 (shown) & 244375
Torque to 21–35 ft-lb
1
(28–47 NSm)
Torque to 21–25 ft-lb
2
(28–34 NSm)
Torque to 23–27 ft-lb
3
(31–36 NSm)
7
1
6
21
NOTE: Numbers indicate tightening sequence. Tighten
evenly to 7–10 in-lb (0.8–1.1 NSm), then retorque to
125 in-lb (14 NSm) three times, consecutively, to com
pensate for diaphragm relaxation.
BOTTOM VIEW
Fig. 4
29
1
Air Bleed Hole
3
40
5
3 2
1
4
6
10
2
13
1
17
22
26
18
9
15
16
4
20
23
3