Switches; Control Switch; Service Switch; A) Drain - Hoshizaki KMD-450MAH Service Manual

G. Switches
The "control switch" and the "service switch" are used to control operation and are
located on the control box.

1. Control Switch

The control switch has three positions: "OFF" for power off, "ICE" for icemaking, and
"SERVICE" to activate the service switch.

2. Service Switch

When the control switch is in the "SERVICE" position, the control switch supplies power
to the service switch and the icemaker is in service mode. The service switch has three
positions: "DRAIN," "CIRCULATE," and "WASH." See the information below for details
of each function.
Note:
1. When the service switch is activated, power is supplied to the pump motor in all
three positions.
2. When the control switch is in the "OFF" position or in the "ICE" position, the
service switch has no power and can be left in any position.

a) DRAIN

When the service switch is active and in the "DRAIN" position, power is supplied to the
pump motor and drain valve.

b) CIRCULATE

When the service switch is active and in the "CIRCULATE" position, power is supplied
to the pump motor only. This operation can be used to circulate cleaner for extended
periods of time over the outside surface of the evaporator.

c) WASH

When the service switch is active and in the "WASH" position, power is supplied to the
pump motor and wash valve. This operation is used to circulate cleaner and sanitizer
over both the inside and outside of the evaporator.
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