Emerson Anderson Greenwood 9300 Series Installation And Maintenance Instructions Manual page 17

Anderson Greenwood SerieS 9300 Pilot oPerated Safety relief ValVeS
InstallatIon and MaIntenance InstructIons
13. remove blowdown bushing (390) and
blowdown seal (630) from body (100).
note: the blowdown screw retainer (380)
is a loose fit on the blowdown adjustment
screw (350). Be prepared to catch it
when the bushing (390) is removed from
the body (100).
14. loosen the blowdown screw locknut (370)
and remove the blowdown adjusting screw
(350) and seal (630) from the bushing (390).
15. remove the vent (800) from the body (100).
note: it is not necessary to remove
the filter screen (400) or nozzle (110) from
the body (100).
16. Clean all parts and replace all soft goods.
the spindle/seat assembly (550) is factory
assembled and must be replaced as a unit.
if the nozzle (110) is nicked or scratched,
it should be replaced. to remove it, use a
deep socket.
3.4 Pilot assembly for flowing modulating or
snap action pilots (series 91, 93, and 93t)
1. on Series 93 and Ptfe seat Series 91
and 93t pilots, if you removed the nozzle
(110), reattach the nozzle (110) to the body
(100), and replace the spindle seat assembly
(550).
2. if you removed the filter screen (400),
reattach the filter screen (400), and reattach
the vent (800) to the body (100).
3. reattach the blowdown seal (620), and
blowdown adjusting screw (350) to
the blowdown bushing (390), and tighten
the blowdown nut (370).
note: make sure the blowdown screw
retainer (380) is on the blowdown
adjustment screw (350).
4. attach the bushing seal (630) and the
blowdown bushing (390) to the body (100).
5. Place the shim washer(s) (490), if applicable,
and spindle spacer (170) on the spindle seat
assembly (550). then place the spindle seat
assembly (550) in the body (100).
6. lay a straight edge across the body (100)
and check the gap between the straight
edge and the spindle spacer (170). add or
remove shim(s) (490) as required to make
the top of the spindle spacer (170) even with
the top of the body (100).
7. align the small hole in the lower diaphragm
case (220) with the hole in the spindle
diaphragm (500). then align the spindle
diaphragm hole (500) with the hole in the
body (100). install the lower case (220), body
bolts (340) and bolt seals (610) onto the body
(100) and tighten together.
note: on the 91 and 93t pilots, there are
gaskets (690) on each side of the spindle
diaphragm (500) and a diaphragm case plate
(180) that must be installed onto the lower
case (220) using the spiral pin (410).
8. on Series 91 and 93t pilots, slide the hex
nut (300), flat washer (290), seal retainer
(280), and seal boost tube (590) on to the
boost tube (320).
on Series 93 pilots, slide the hex nut (300),
flat washer (290), and thread seal (600)
on to the boost tube (320). then attach
the boost tube (320) to the body (100) with
the connector (330).
9. on Series 91 and 93t pilots, install parts in
the following order: spindle seal (660), boost
spacer (130), diaphragm case gasket (640),
boost diaphragm (510/520), diaphragm
case gasket (larger i. d. hole) (640),
spacer ring (230), boost plate (160), sense
spacer (140), diaphragm case gasket (640),
sense diaphragm (510), diaphragm gasket
(smaller i.d. hole)(640), sense gasket (670),
sense plate (150), hex spacer (120), spring disc
(830), lock washer (780) and jam nut (750).
note: be sure to align large hole in
diaphragm(s) (510/520) and gaskets
(all 640) with the boost tube hole (270).
10. on Series 93 pilot, install parts in
the following order: spindle seal (660),
check plate (rubber side down) (560),
boost spacer (130), boost diaphragm (510),
diaphragm gasket (650), spacer ring (230),
boost plate (160), sense spacer (140),
diaphragm gasket (650), sense diaphragm
(510), sense plate (150), hex washer (120),
spring disc (830), lock washer (780), and jam
nut (750).
note: be sure to align large hole in
diaphragm(s) (510) and gaskets (all 650)
with the boost tube (270) hole.
11. to tighten spindle (550) and diaphragm
assembly, hold ¾" socket tool onto hex
washer (120) stationary, and tighten the jam
nut (750).
12. install upper diaphragm case (210), case
bolts (240), washers (250) and nuts (260),
and tighten.
13. install the upper boost tube seal (590)
(Series 93 pilot), Ptfe seal (590) and seal
retainer (280) (Series 91 and 93t pilot),
and boost tube connector/bolt (270) into
the large hole of the diaphragm cases
(210, 220). Slide the lower boost tube seal
(600) (Series 93 pilot), Ptfe seal (590) and
seal retainer (280) (Series 91 and 93t pilot),
washer (290), nut (300), and boost tube
connector nut (310/480) up the boost tube
(320) attach to the boost tube connector/
bolt (270). tighten boost tube fitting (310)
on the boost tube (320) at the boost tube
connector/bolt (270).
14. install the spring (840), spring washer (820),
bonnet assembly (200), and bonnet bolts
(770), adjusting screw (790), locknut (190),
and cap (760).
note: for the vacuum pilot remember to
replace bonnet bolt (700), bonnet gasket
(580) and adjusting screw seal (720).
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