Drain Switch; Condensate Pump Kit (Optional) - Movincool CLASSIC PLUS 14 Service Manual

ELECTRICAL SYSTEM
6.

Drain Switch

The Classic Plus 14 is equipped with a drain tank switch. When the drain tank accumulates approxi-
mately 4.0 gallons (15 liters) of condensate (water) in the drain tank, the drain tank switch sends a signal
to the microprocessor. The microprocessor stops all operation of the unit and flashes the "Tank Full"
LED.
This system utilizes a .1 AMP, 250 VAC micro-switch for this function. When drain water accumulates
approximately 4.0 gallons (15 liters) in the drain tank, the drain tank base plate, which is supported at its
fulcrum, is pushed down in the direction of the arrow as shown in the figure below. When the drain tank
base plate is forced down, the top of the drain tank base plate turns off the contacts (1) – (2) of the micro
switch. This causes the ground signal at the J103 connector of the control panel assembly to go open.
When the microprocessor detects this event, it turns the unit off and flashes the "Tank Full" LED.
To J103
Operation of Drain Switch
When the drain tank is removed (or the drain tank is emptied), the top of the drain tank base plate returns
to its original position by the tension of the coil spring. Then contacts (1) – (2) of the drain tank switch
close. This provides a ground to the microprocessor through the J103 connector. To re-start the unit,
press one of the fan mode buttons or the "Cool On/Off" button. The unit will return to the previous Tem-
perature Set Point.
7.

Condensate Pump Kit (optional)

The Classic Plus 14 model comes standard with a drain tank, which collects the water that forms on the
evaporator during normal cooling operation. If the unit is required to operate continuously without periodic
emptying of this tank, a condensate pump may be needed. A condensate pump kit (CPK-3) is available
for the Classic Plus 14 model.
MOVINCOOL CLASSIC PLUS 14 SERVICE
TOP OF
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BASE
PLATE
DRAIN
SWITCH
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NC
DS2
2
1
DS1
C
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SPRING
BASE
EVAPORATOR
DRAIN PAN
DRAIN TUBE
DRAIN TANK
DRAIN WATER DRAIN W TER
FULCRUM
BASE
PLATE
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