Switches; Control Switch; Service Switch - Hoshizaki Serenity Series Service Manual

H. Switches
Two control switches are used to control operation. These switches are referred to as the
"control switch" and the "service switch" 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. WARNING! Moving control switch to "OFF"
position does not de-energize all components.

2. Service Switch

When the control switch is in the "SERVICE" position, the control switch supplies power
to the service switch and water pump. The machine 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 water pump 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
This appliance utilizes a pump-out drain system. When the service switch is active and
placed in the "DRAIN" position, power is supplied to the drain valve.
b) CIRCULATE
When the service switch is active and placed in the "CIRCULATE" position, power is
supplied to the pump only. This operation can be used to circulate cleaner for extended
periods of time over the outside surface of the evaporator.
c) WASH
This appliance utilizes a solenoid operated wash (bypass) valve. When the service switch
is active and placed in the "WASH" position, power is supplied to the water pump and the
wash valve. This operation is used to circulate cleaner and sanitizer over both the inside
and outside of the evaporator.
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