4
2.
Install spring adjusting nut (35) and thread it all the
way down as shown.
3.
Install springs (28,29).
4.
Install diaphragm disc nut (16 only showing in Fig
3) and diaphragm disc (24). (See table 2)
5.
Slide diaphragm plate/assembly into yoke (32) as
shown.
6.
Install diaphragm (21) and align holes with those in
diaphragm case (For sizes 35, 55 and 85). For 135
actuators place the bead of diaphragm (21) in the
recess of lower diaphragm case (25).
7.
For 35 actuators and where flat stock diaphragm
material is used as an emergency measure see
special "performing" instructions in step 8. Install
upper diaphragm case (20) and install (4) nuts and
bolts (22/23) (90
o
apart) and finger tighten. Install
remaining bolts and nuts and torque to the values
given in Table 2.
8.
Special "Performing" Instructions - Flat stock
material is used for 35 diaphragms and emergency
measure diaphragms. First finger tightens all
diaphragm case bolts. Then compress actuator
spring sufficiently to move diaphragm through its
full travel. This performs diaphragm and permits
full movement through rated travel without
resistance from a taut diaphragm.
Act.
Size
(see
Fig 1)
Lower
Dia.
Casing
Bolts
(26)
Upper
Dia.
Casing
Bolts
(22,23)
35
15-20
15-20
55
30-36
15-20
85
30-36
15-20
135
45-50
15-20
Table 2 - Torque Values (ft-lbs)
Size
1
5
17
35
15-20
2-5
50-80
55, 55A,
85, 85A
15-20
2-5
50-80
135
30-36
2-5
50-80
Table 3 – Torque Values Hand Operating Device (ft-lbs)
Direct Actuator HOD
Disassembly
(see Fig 1)
1.
Remove nut (1), lock washer (2), and handwheel
(3).
2.
Remove packing gland (5), packing ring(s) (6),
washer (7), and O-Ring (8) from bonnet (9).
3.
Screw handscrew (4) down into bonnet (9) until
stem bottoms on bonnet threads.
4.
Remove handscrew disc (15) after removing
retaining ring and half rings above it.
5.
Remove handscrew (4) through upper end of
bonnet (9).
Direct Actuator HOD
Reassembly
(see Fig 1)
1.
Insert handscrew (4) in top of bonnet (9) and screw
down through bonnet threads.
2.
Place retaining ring over handscrew thread. Insert
half rings in the handscrew groove with wide face
of rings upward toward bonnet (9). Install
handscrew disc (15) over half rings and fit retainer
ring into groove of disc making sure it enters
groove.
3.
Screw handscrew (4) up through bonnet (9). Place
O-Ring (8) over handscrew (4) stem and into
bonnet (9) followed by washer (7) and packing
ring(s) (6). Screw packing gland (5) into bonnet (9)
and tighten sufficiently to prevent handwheel (3)
CAUTION!
Spring load must be completely removed
before proceeding or injury/death can occur.
NOTE
Ensure that all components being installed are free
from any nicks burrs or defects prior to assembly.
Содержание 135
Страница 6: ...6 Figure 1 Direct Diaphragm Actuator HOD ...
Страница 7: ...7 DIRECT ACTING PARTS LIST ...
Страница 8: ...8 Figure 2 External View of Direct Acting Diaphragm Actuator ...
Страница 12: ...12 Figure 3 Reverse Diaphragm Actuator HOD ...
Страница 13: ...13 Figure 4 Disengaging Handscrew Disc from Nut Figure 5 External View of Reverse Acting Diaphragm Actuator ...
Страница 15: ...15 REVERSE ACTING PARTS LIST ...
