Switches; [A] Control Switch; [B] Service Switch - Hoshizaki KMD-410MWH Service Manual

7. SWITCHES

Two different control switches are used for operation of KMD-410MAH and KMD-410MWH.
These switches are referred to as the "control switch" and the "service switch" and are
located on the control box.

[a] CONTROL SWITCH

This switch is used to place the machine into one of three modes: "OFF" (center position),
"ICE" (upper position), and "SERVICE" (lower position).

[b] SERVICE SWITCH

When the control switch is in the "SERVICE" position, the control switch supplies power to
the service switch and 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.
1) DRAIN
The KMD-410M_H series utilizes a pump-out drain system. When the service switch is
active and placed in the "DRAIN" position, power is supplied to the pump and drain valve.
2) 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.
3) WASH
The KMD-410M_H series utilizes a solenoid operated wash (bypass) valve. When the
service switch is active and placed in the "WASH" position, power is supplied to the pump
and wash valve. This operation is used to circulate cleaner and sanitizer over both the inside
and outside of the evaporator.
21