6
KI-OM-0591 Rev 3
Introduction
of the fluid outlet. The amount of fluid dumped is controlled by an electronic controller that
operates the actuator on the control valve. The amount to which the valve is opened is
determined by the controller based on feedback received from the PT100 temperature probe
mounted into the outlet manifold.
Several safety interlocks are incorporated into the control system which provide protection
against low fluid level in the heater tank, over-temperature and motor overload. The control
circuit also includes indication via LED’s and the controller display for operator feedback. The
power and control system wiring diagrams are detailed in the electrical schematics in
Appendix C. Refer to Table 2 and Figure 2 below for the control panel layout and part
identification.
Figure 2 Control Panel Layout
The following table identifies the major control components, and outlines their function within
the control circuit. (Refer to wiring diagrams in Appendix C for full wiring details).
Table 2 Control component identification
Component
Component ID Function Description
Contactor 1
C1
Pump contactor coil
Contactor 2-10
C2-C10
Heater contactor coils
Hour Meter
H1
The hour meter records the running hours of the pump and
is wired through the auxiliary contact on the pump contactor
C1/1.
Run Light (Green)
Motor On
L1
Local indication that the pump motor contactor is operational
and power is supplied to heater switches. Wired to the
normally open contact of the start switch S2NO and the
auxiliary C1/1 of the motor contactor C1.
Summary of Contents for WHE - 3
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