Jackson MSC JP-24F, Service Manual

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SERVICE PROCEDURES continued
2. To replace rinse/fill solenoid valve coil or internal parts.
The rinse/fill solenoid valve is electrically operated by the cam timer at the initial fill (at start of day/meal)
and then during the rinse cycle. Most problems are coil failures or water deposit buildup on diaphragm.
See
illustrated parts list for repair parts.
A. To replace solenoid valve coil.
(1) Disconnect power to machine.
(2) Disconnect wire leads to coil.
(3) Remove screw holding coil in place and
remove coil.
(4) Install new coil in reverse order.
B. To replace Solenoid Valve internal parts.
(1) Shut off water supply to machine.
(2) Take valve apart as shown by unscrewing
the bonnet from valve body. Carefully lift off
the bonnet. The "o" ring seal and
diaphragm can now be lifted out. Don't drop
the plunger.
(3) Most problems are with a clogged
diaphragm pilot port. Clear pilot port in
diaphragm.
(4) To reassemble valve place the diaphragm
cartridge in the body with the pilot port
extension UP.
Hold the plunger with the synthetic seat
against the pilot port. Make sure the "o" ring
is in place, then lower the bonnet and
enclosing assembly over the plunger. Screw
the bonnet assembly firmly down on the
body.
(5) Turn on water supply to machine.
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