Emerson Anderson Greenwood 9300 Series User Manual

13
ANDERSON GREENWOOD SERIES 9300 PILOT OPERATED SAFETY RELIEF VALVES
InstallatIon and MaIntenance InstructIons
2.8 Reassembly of main valve single chamber
diaphragm
1. Ensure nozzle (460) maintenance is
complete and nozzle (460) is reinstalled.
2. Secure seat hub (420) into soft jaw vise.
3. Install lower case (280) on top of seat plate.
4. Lower shaft (320) and diaphragm assembly
through center hole of case (280).
5. Holding shaft (320) stationary, screw the
seat plate assembly (910, 920) onto the main
valve shaft (320). The connecting thread
will run free, tighten, and free again as it
engages with the locking helicoil (330).
CAUTION
Do not tighten the seat hub against the shoulder
of the shaft.
6. Apply PTFE gasketing (620) to top of the
main valve body (100). (See Figure 6)
7. Lower seat plate (910, 920), shaft assembly,
(320) and lower diaphragm case (280) into
main valve body (100). Align bolt holes with
diaphragm (170), case (280), and body (100).
8. Install PTFE gasket (620) material to upper
case (280). (See Figure 6)
9. Reattach the upper diaphragm case (210)
and seat plate assembly (910, 920) to
thebody (100).
10. Align match marks of case (210) with body
(100), and install cap bolts (700, 710) and
tighten in a crisscross pattern.
11. Reattach the pilot and tubing.
2.9 Reassembly of main valve dual chamber
diaphragm
1. Ensure nozzle (460) maintenance is
complete and nozzle (460) is reinstalled.
2. Secure seat hub (420) into soft jaw vise.
3. Install lower case (280A) on top of seat
plate(910).
4. Lower shaft (320) and diaphragm assembly
through center hole of case (280A).
5. Holding shaft (320) stationary, screw the
seat plate assembly onto the main valve
shaft (320). The connecting thread will run
free, tighten, and free again as it engages
with the locking helicoil (330).
CAUTION
Do not tighten the seat hub against the shoulder
of the shaft.
6. Apply PTFE gasketing (620) to top of
themain valve body (100). (See Figure 6)
7. Lower seat plate (910, 920), shaft assembly
(320), and lower diaphragm case (280A) into
main valve body (100). Align bolt hole with
diaphragm (170A), case (280A), and body (100).
8. Replace the Seal Rod (690) in the upper end
of the adapter bore (230) lubricating it with
Dow Corning FS3451 or equivalent when the
new one is installed. (See Figure 3, Detail A)
10. Lubricate threads and shaft of lift rod (250)
and lower spool assembly onto the main
valve (100) while lifting rod wire through
thecenter hole of the adapter (230).
11. Align match marks of case (220, 280A) with
body (100), and install cap bolts (700, 710)
and tighten in a crisscross pattern.
12. Lower auxiliary diaphragm assembly onto
lower auxiliary case (280B) lifting rod wire
through the center of diaphragm bushing
(240). Holding the wire, spin diaphragm
assembly 2 full turns clockwise.
13
. Now bend the wire in half and spin the liftrod
(250) counterclockwise approximately 20turns.
This is the starting position for setting the
lift of the auxiliary diaphragm (170B).
14. To set lift position, position the edge of a
ruler at the top edge of the auxiliary vacuum
plate (160B) and lift the rod (250) up. Normal
lift is ⅛” to
3
/
16”. To increase lift, spin rod
(250) clockwise. To decrease lift, turn rod
counterclockwise.
15. To lock setting insert PTFE seal rod O-ring
(690) onto rod (250) and install jam nut
(520B). To tighten, hold jam nut (520B) and
lift rod (250) stationery and turn rod jam nut
(530) clockwise until wrench tight.
Note: re-check Lift to ensure adjustment
did not change during tightening.
16. Uncap the dome port and close the auxiliary
and main diaphragm assemblies.
17.
Apply PTFE Gasket (620B) to upper auxiliary
diaphragm case. (See Figure 6) Replace the
upper auxiliary diaphragm case (620B). Install
case bolts (700) and nuts (730) and tighten.
18. Replace the pilot and tubing.
9. Install PTFE gasket material to upper main
case (220) (See Figure 6) and lower auxiliary
case assembly spool (see Figure 6).
(19), feedback diaphragm (38), gasket (15),
feedback diaphragm plate (14) and gasket (15).
5. Remove spool (36) and spindle (24) assembly.
6. Remove the lower spindle, -013 O-ring
(23), outlet seat (22), -014 O-ring (32) from
the spindle (24). Now the spindle (24) may
be removed from the spool (36). Remove
thetop inlet seat O-ring from the spindle.
7. Remove the lower diaphragm case (2)
from the body by removing the 4 inner case
bolts(20).
8. Remove the inlet connector (27) and inlet
screen (41) by removing the 2 bolts (28) on
the side of the pilot body (1).
9. Clean all metal parts, and throw away all
gaskets, diaphragms, and seals.
Note: pay particular attention to all port
holes and polished areas.
3 PILOT MAINTENANCE
3.1 Pilot disassembly for non-flowing
modulating pilots (Series 400B)
(RefertoFigures 7 and 8)
1. Remove bonnet cap (5), loosen adjustment
screw lock nut (7), back out adjusting screw
(6) to relieve spring (9) tension. Removebonnet
nuts (11), bonnet washers (10and 53), bonnet
assembly (4, 29, 51), bonnet gasket (12), spring
washer (8), and spring (9).
2. Push down on spool retaining nut (30)
with a Phillips screw driver engaging the
spool anti-rotation pin (21), and remove
nut (30) with a ½” open end wrench turning
counterclockwise.
3.
Remove spindle spring (31), case bolts (13and
48), nuts (17 and 49), washers (16and 50) and
upper case (3). Remove the bonnet studs (43).
Note: internals are now accessible for removal.
4. Remove -014 O-ring (32), plate sense gasket
(18), sense plate (33), sense diaphragm (34),
gasket (15), ring lantern (35), diaphragm

Emerson Anderson Greenwood 9300 Series Specifications

General

Brand	Emerson
Model	Anderson Greenwood 9300 Series
Category	Control Unit
Language	English