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Section 6
MAINTENANCE
Figure 6 ---4 Pressure Regulator Valves
(P/N 408275 ---Control) & (P/N 406929 ---Spiral Valve)
*Repair Kit P/N 250028---693 (for 408275)
*Repair Kit P/N 041742 (for 406929)
cone shaped cover of the pressure regulator. When
the jam nut is loose, turn the adjusting screw clock-
wise to increase or counterclockwise to decrease
the setting.
Above 100 psig (6.9 bar), the spiral valve regulator
should allow pressure to flow into the chamber of
the spiral valve actuator. The spiral valve should
start to rotate at this time.
At approximately 108 psig (7.4 bar), the Sullicon
regulator should allow pressure to flow into the
control chamber of the Sullicon Control. The Sul-
licon Control level should start to move at this time.
Cycle the Control System several times and re-
check all pressure settings.
PRESSURE
REGULATOR
NANCE
Refer to Figur e
6 ---
408275 and P/N 406929) maintenance normally re-
quires the replacement of the internal diaphragm.
Use repair kit number 250028---693 (for 408275), or
number 041742 (for 406929), and follow the proce-
dure below for proper installation.
1. Loosen the locknut and turn the adjusting screw
counterclockwise until the inner spring tension
is relieved. The adjusting screw should turn
freely when the spring tension is relieved.
2. Remove the spring housing from the body to al-
low access to internal parts.
3. Next, remove the spring button and the spring.
The dampener will stay inside the spring as it is
32
VALVE MAINTE-
4. Pr essure regulator valves (P/N
removed. Leave the dampener inside the spring
as there is no need to remove it.
4. After removing the spring, remove the gasket
stop and brass gasket.
5. At this time, remove the pressure plate nut and
disassemble the pressure plate, diaphragm,
diaphragm gasket (rubberized asbestos), seat
disc and seat gasket.
6. Remove and discard the seat ring.
7. The next step is to reassemble the regulator us-
ing the new parts provided in your repair kit.
8. Reassemble the diaphragm, pressure plate,
gasket, seat disc and seat disc gasket and
tighten the nut. All of these parts with the excep-
tion of the pressure plate are provided in the re-
pair kit.
9. Replace the seat ring with the new seat ring pro-
vided.
10. Replace the existing brass gasket and dia-
phragm gasket stop.
11. Next, place these parts in their proper place on
the body and replace the spring as it was prior to
disassembly.
12. Place the spring button over the spring as
shown.
13. With all parts in order, replace the spring cham-
ber and tighten.
14. Tighten the adjusting screw until tension is real-
ized.
1 5 . At this time, r efer to
D iffer ential Pr essur e Regul a -
tor A djustment
Pr oc edur e to r eadjust the c on -
trol regulator.
DRIVE COUPLING INSTALLATION AND ALIGN-
MENT
R e f e r t o F i g u r e s
6 --- 5
,
6 --- 6
pling installation and alignment, the tools required
are a straight edge, a measuring scale, one set of
feeler gauges, a set of standard Allen wrenches,
one set of standard socket wrenches, and a 17mm
end wrench for shrink disc locking screws.
WARNING
!
Disconnect all power at source, before attempt-
ing maintenance or adjustments.
Use the following procedure for proper mainte-
nance and alignment of the coupling:
1. Disassemble the coupling. Note arrangement of
bolts, washers, and nuts as they must be re-
placed in the same order.
2. Inspect both shafts and hub bores, making sure
they are free of burrs. File if necessary. Be sure
the key fits the motor shaft properly. For installa-
tion of the drive coupling, follow the steps below:
STEP 1 --- MOUNT HUBS
Motor Hub --- This hub has an interference fit. Heat
the hub using an oven, oil bath or an induction
heater up to 300_F (149_C). Mount the hub to the
motor shaft as quickly as possible. The hub face
must be flush to the motor shaft. Allow hub to cool
before proceeding.
,
6 --- 7
a n d
6 --- 8
. F o r c o u -
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