Power Soak 31990 PS-100 Owner's Manual - Manual (Page 25)

21
Component Operation and Checks
The following checks should only be performed by
qualified technicians using extreme caution.
Electrical hazard to untrained personnel may result in
electrical shock, burns, or death.
Push ON / Push OFF Start and Stop Buttons
TURN POWER OFF AT BREAKER PANEL. The stop button should have
continuity at rest and no continuity when pushed in. The start button should
have no continuity at rest and continuity when pushed in. Remove the
wires before checking for continuity.
Liquid Level Control and Sensor
The liquid level control sends a trickle current (1/1000 amp) out terminal
LCO to the liquid level sensor. If there is water in the wash sink, the
current passes through it to the wash sink wall and back to the liquid level
sensor to terminal GND. After the circuit is complete, the relay in the liquid
level control will close sending current to operate the various components
in the control panel. If the red indicator light
is “on” the liquid level control
senses water. A 10 second time delay is timed after the control has not
sensed water. The purpose of this delay is to prevent rapid cycling of the
relay should the water rise and fall below the sensor while the sink is filling
or running. At the end of the time delay, the relay in the liquid level control
will open to stop the pump.