DENSO CORPORATION CLASSIC PLUS 26 - Manual (Page 25)

ELECTRICAL SYSTEM
17
3. Fan Motor
The fan motor is a single phase, induction type
two-speed motor. The motor rotates fans on the
evaporator side and the condenser side at the
same time.
Specifications: Rated Voltage: 230 volts 60 Hz
Rated Output: 559 watts
355 watts
4. Compressor Motor
The compressor motor is a single phase motor. It
is contained within the same housing as the
compressor.
Specifications: Rated Voltage: 230 volts
Rated Output: 1600 Watts
NOTE: An inter nal overload r elay is used to pr otect the
compr essor motor and fan motor . This r elay is
built into the compr essor motor and fan motor and will
inter rupt the flow of cur rent when ther e is an
over cur rent situation or if abnor mally high
temperatur e builds up in the compr essor motor or fan
motor.
5. Drain Switch
The Classic Plus 26 is equipped with a drain tank
switch. When the drain tank accumulates ap-
proximately 4.0 gallons (15 liters) of condensate
(water) in the drain tank, the drain tank switch
sends a signal to the microprocessor. The micro-
processor 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 accu-
mulates 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 opens
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.
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 Temperature Set Point.
2
NC
C
1
DS2
DS1
To J103
DRAIN
SWITCH
DRAIN WATER
BASE
PLATE BASE
SPRING
DRAIN TUBE
EVAPORATOR
DRAIN TANK
FULCRUM
DRAIN PAN
TOP OF
BASE
PLATE
CF1 (White)
CF2 (Brown/White)
J5 Low (Red)
J6 High (Black)
Ground
(Green/Yellow)
Fan Motor
Operation of Drain Switch