MovinCool Climate Pro 18 Service Manual - Manual (Page 40)

Operation Section
40
5.7 Drain Switch
• The Climate Pro 18 is equipped with a drain switch. When the drain tank accumulates
approximately 4.0 gal (15 L) of condensate (water) in the drain tank, the drain switch sends a
signal to the microprocessor. The microprocessor stops all operation of the unit, displays the
"FL" on the LCD and closes the contact of output signal.
• This system utilizes a 0.1 A, 125/250 VAC micro-switch for this function. When drain water
accumulates approximately 4.0 gal (15 L) in the drain tank, the drain tank base plate, which is
supported at its fulcrum, is pushed down in the arrow direction 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 CN18 connector of the
relay board to go open. When the microprocessor detects this event, it shuts the unit off, displays
the "FL" on the LCD and closes the contact of output signal.
• 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 from the tension of the coil spring. Then contacts #1-#2 of
the drain switch close. This provides a ground to the microprocessor through the CN18
connector.
ILL00873-00
2
NC
C
1
DS2
DS1
Indoor Heat Exchanger
Drain Pan
Drain Tube
Drain Tank
Fulcrum
Drain Water
Base Plate Top
Base Plate Base Plate Bottom
Drain Switch
Spring
To CN18