Hoshizaki KML "F" SERIES - Manual (Page 44)

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3. SWITCHES
Two control switches are used to control operation in the KML Series Modular Crescent
Cubers. These switches are referred to as the “Control Switch” and the “Service Switch.”
[a] CONTROL SWITCH
The Control Switch is located on the lower left section of the control box when facing
the front of the machine. This switch is used to place the machine into one of three
modes: “Power Off” (Center position), “Ice Making” (Right position), and “Service” (Left
position).
[b] SERVICE SWITCH
When the Control Switch is pushed to the left, the machine is placed in “Service” mode.
In this position the Control Switch supplies power to the Service Switch. The Service
Switch can be used to perform three functions: Drain the tank (left position), Circulate
water (center position), Wash the ice making compartment (right position). When the
Service Switch is activated power is supplied to the pump in all three positions.
1) Drain
The KML series utilizes a pump-out drain system. When the Service Switch is active
and placed in the left position, power is supplied to the pump and the Drain solenoid
valve.
2) Wash
The KML series utilizes a solenoid operated cleaning valve. When the Service Switch
is active and placed in the right position, power is supplied to the pump and the Bypass
solenoid valve. This cleans both the inside and outside of the evaporator plate
assembly.
3) Circulate
When the Service switch is active and placed in the center 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.
3) Check the Controller Board by using test program of the Controller Board.
The Output Test Switch “S3” provides a relay sequence test. With power OFF, place S3
on and switch power to ICE. The correct lighting sequence should be none, 2, 3, 4, 1, and
4, normal sequence every 5 seconds. S3 should remain in the “OFF” position for normal
operation.