Parts & Service Communicator Subject: Keyswitch Ground
SII-025 8/09
Parts & Service Communicator Subject: Keyswitch Ground 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
Figure 1
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 voltage 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: 800-367-4233. Figure 2
Manitowoc Beverage Systems Sellersburg, 2100 Future Drive, Sellersburg, IN 47172, Tel: 812-246-7000, www.manitowocbeverage.com
Parts & Service Communicator Subject: Keyswitch Ground 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
Figure 1
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 voltage 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: 800-367-4233. Figure 2
Manitowoc Beverage Systems Sellersburg, 2100 Future Drive, Sellersburg, IN 47172, Tel: 812-246-7000, www.manitowocbeverage.com
