8
KI-OM-0591 Rev 3
Introduction
Switch Push Button
Motor Start/Stop
S2
This switch is used to make and break the circuit to the motor
contactor and the heater selection switches. This is the main
start/stop switch for the unit.
Switch Rotary 2p
Heater Selection
S3-S7
The heater ON/OFF switches control the switching of power
to the coils of the respective heater contactors
Switch
Fault Reset
S8
The fault rest switch unlatches the over-temperature and low
level fault interlocks and allows normal function.
Switch Mushroom
Emergency Stop
S9
This switch contact de-energizes the motor and heater
control circuits. The pump and heaters are switched off but
the controller and safety circuits remain energized.
Switch
Float
S10
The float switch mounted in the level control tank is used to
prevent the system function if the water level in the heater
tank is low. The contact is used to activate the de-bounce
timer.
Timer
T1
The de-bounce timer is used to eliminate nuisance faults due
to the bouncing of the float switch in the level control tank.
The normally closed contact T1 is used to de-energize the
low level relay R2. Timer is factory set to 2 seconds.
Component
Component ID Function Description
Summary of Contents for WHE - 3
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