Turbo Air CRT-77-2R Operators Manual

z MODEL:

SERVICE MANUAL

CRT-77-1R
CRT-77-2R

z SPECIFICATION

MODEL DOOR CU./FT. HP V/Hz/Amps Refrigerant
CRT-77-1R 1 3.0 2/9 115/60/2.65 R134A(2.927Ounce)
CRT-77-2R 2 3.0 2/9 115/60/2.65 R134A(2.927Ounce)

z PARAMETER

z TEMPERATURE CONTROL

z WORKING TEMPERATURE RANGE

16~32℃/61~90℉.

z CIRCUIT DIAGRAM

z COOLING SYSTEM

z EXPLODED VIEW and SPARE PARTS LIST

CRT-77-1R

CRT-77-2R

Fault What problem is? How to solve?

No

Cooling

Compressor

does no work.

Compressor

works.

1. No power or wrong Voltage
and Frequency of Power.

2. Bad power cord. Change power cord.

3. Temperature Controller is bad. Change Temperatu re Controller.

4. Overload protector of
compressor is bad.

5. Starter relay of compressor is
bad.

6. Compressor is bad. Change compressor and add refrigerant.

1. Blockage in Water Leakage

Tube (#47, #48), which cause to

freeze.

2. Refrigerant leakage.

3. No exhaust from Compressor. Change compressor and add refrigerant.

4. Blockage in Coolin g System.

5. Blockage in Eva.

6. Motor does not work or blade
or blade fall off.

Connect the right Power.

Change overload protector.

Change starter relay of compressor.

Please see "Remark 2" hereunder.

Check where leakage, repair and add
refrigerant.

Clear Cooling System. Change filter and
add refrigerant.
Change Defrost Timer (#7) or
temperature controller.

Change Motor or fix the blade.

Cooling

is not
good.

LED
strip

Compressor

works

continuously.

Compressor

works on and

off.

The lamp
gave little
slight.

LED doesn't
work.

7. Something blocks the outlet. Clear the outlet.

8. Bad heat elimination of
condenser.

1. Object is too much. Reduce object.

2. Something blocks the outlet. Clear the outlet.

3. Does not close the door or the
door doesn't fasten up.

4. Compressor is bad. Change compressor and add refrigerant.

5. a little blockage of compressor Clear the compressor.

6. a little leakage of compressor

1. Surrounding temperature is
too high. (working temperature
range is 16~32℃/61~90℉)

2. Bad Motor or Motor rotates
slowly.

3. Wrong Voltage and Frequency
of Power.

4. Bad heat elimination of
condenser.

1. Output voltage is too small.

1. Switch is in off. Turn on.

2. Power switch is bad. Change switch.

Keep far from heat source. Keep clear of
base outlet.

Close the door or change the door.

Check where leakage, repair and add
refrigerant.

Move the unit to a convenient location.

Change Motor.

Connect the right Power.
Keep far from heat source. Keep clear of

base outlet.
Change the LED power supply. Please

see its photo from "remark 1" hereunder.

3. LED is in short circuit or the
cord is disconnected.

Remove the sh ort ci rcuit fau lts or c onne ct
the cord.

Some LED

units is bad.

Remark:

Change the LED strip.

1. LED Power Supply.

2. First step, turn the Defrost Timer clockwise, until you hear "da", this means the
machine is in defrosting.
It will work for about 20min, and then will stop automatic.
If after fist step, the problem is still exit. Please do second step.
Second step: Power off, open the door. It need 4~5hours to melt the ice on Eva.