Pressure Regulator Valve Maintenance - Sullair 20/12 Series Operator's Manual And Parts List

Figure 6-6 Sullicon Control (P/N 011682-003)
* Repair Kit P/N 250020-353
WARNING
!
DO NOT touch the electrical contacts of the pres-
sure switch with any metallic object. Severe elec-
trical shocks may occur. Cycle the Control System
several times and recheck all the pressure set-
tings.
PRESSURE REGULATOR
NANCE
Ref er t o F igur e 6 -- 7. P r es s ur e r egulat or v alv e ( P / N
048059) maintenance normally requires the replace-
ment of the internal diaphragm. Use repair kit No.
048409 and follow the procedure 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 chamber 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 re-
moved. Leave the dampener inside the spring as
there is no need to remove it.
4. After removing the spring, remove the diaphragm
stop.
5. At this time, remove the pressure plate nut and
disassemble the pressure plate, diaphragm, dia-
phragm gasket (rubberized asbestos), seat disc
and seat gasket.
6. Remove and discard the seat ring.
VALVE MAINTE-
Section 6
MAINTENANCE
7. The next step is to reassemble the regulator using
the new parts provided in the repair kit.
8. Reassemble the diaphragm, pressure plate, dia-
phragm gasket, seat disc and seat disc gasket
and tighten the nut. All of the these parts with the
exception of 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 diaphragm stop.
11. Next, place these parts in their proper place on the
body and replace the spring as it was prior to dis-
assembly.
12. Place the spring button over the spring as shown.
13. With all parts in order, replace the spring chamber
and tighten.
14. Tighten the adjusting screw until tension is real-
ized.
15. At this time, refer to Control System Adjustment
Procedure to readjust the control regulator.
CONTROL PRESSURE REGULATOR VALVE
Ref er t o F igur e 6 -- 8. M aint enanc e f or t he c ont r ol
pressure regulator valve (P/N 048354) normally re-
quires the replacement of the internal diaphragm.
Use repair kit no. 048410, and follow the procedure
below for proper installation.
Figure 6-7 Pressure Regulator Valve
(P/N 048059)
* Repair Kit P/N 048409
25