Multiplex SII-025, DI1522 Service Manual

Subject: Keyswitch Ground

Figure 1

Figure 2

SII-025

8/09

Parts & Service Communicator

SYMPTOM

• Tingling from Optifill or Sure-Fill valves.

• Keyswitch does not turn off power to the valves.

• Excessive failure of Autofill, Optifill or Surefill valve
modules.

SCOPE

IC-2323, DI-2323, DI1522, CEV Series, SV Series or MDH­302/402 units.

DETECTION

Make sure the black wire between the keyswitch and the valves IS
grounded with a green wire at the tower or dispenser and the black
wire between the transformer and the keyswitch is NOT grounded
with a green wire (See Figure 1).

ACTION

If the black wire from the key switch to the valves is not grounded
with a green wire at the tower or dispenser , add a green wire as
shown in figure 2 from the valve side of the key switch to the case of
the dispenser. If the transformer load side is grounded, remove and
discard that green ground wire from the load side of the valve
transformer to the transformer base see figure 1.

FURTHER ACTIONS

With the key switch in the off position there should be no volt age on
the black wire with the green ground wire attached as in figure 2.

Contact Manitowoc Beverage Systems Service Sellersburg
Indiana if you have any questions or concerns: 800-367-0427.

Manitowoc Beverage Systems Sellersburg, 2100 Future Drive, Sellersburg, IN 47172, Tel: [phone], www.manitowocbeverage.com