CHAMPION PP-28 Manual - Manual (Page 35)

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COMPONENT REPLACEMENT (CONT.)
Asco Solenoid Valves
All solenoid operators and valves should be cleaned periodically. The time between the cleanings
will vary on the water conditions and the amount of usage. In general, if the voltage to solednoid
is correct, sluggish valve operations, excessive noise or leakage will indicate that cleaning is
required. Clean strainer or filter when cleaning the valve. Replace any worn or damaged parts.
Disassembly/Reassembly of Solenoid:
1. Turn the main water supply to machine off.
2. Flip the power toggle switch on the machine to OFF.
3. Turn off incoming power.
4. Disconnect conduit, coil leads, and grounding wire.
5. Snap off red cap from the top of solenoid base sub-assembly.
6. Push down on solenoid. Then using a suitable screwdriver, insert blade between solenid and
nameplate/retainer. Pry up slightly and push to remove.
7. Remove solenoid from solenoid base sub-assembly.
8. Remove spring washer from solenoid base sub-assembly.
9. Unscrew solenoid base sub-assembly from valve body.
10. Remove internal solenoid parts for cleaning or replacement.
11. Reassemble in reverse order of disassembly.
Disassembly/Reassembly of Valve:
1. Follow instructions above to remove solenoid.
2. Unscrew solenoid base and remove core assembly, core spring, core guide and base gasket.
3. For normal maintenance (cleaning), it is not necessary to remove the valve seat. However, for
valve seat removal use a 7/16” thin wall socket wrench.
4. Remove bonnet screws and valve bonnet from the valve body. Then remove the following
parts: piston spring, support, lip seal, piston assembly, body passage eyelet or body passage
tube, body passage gasket, inner and outer body gaskets or large body gasket. (See Fig. 12).
5. Remove aspirator tube, disc, and disc washer from piston.
6. All parts are now available to clean or replace. If parts are damaged or worn, install a
complete repair kit.
7. Reassemble valve in reverse order.
8. Lubricate the solenoid base gasket and the surface of piston which contacts the lip seal with
high-grade silicone fluid.
9. Lubricate large body gasket or inner and outer body gaskets, body passage gasket, and disc
with a high-grade silicone grease.
10. Position the following parts in the valve body: support, body passage gasket, body passage
eyelet or body passage tube, inner or outer body gaskets or large body gasket.
11. Reassemble piston assembly following the views provided as per Fig. 12.
COMPONENT REPLACEMENT