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1. Remove the cabinet. (Refer to Sec. 2.1.2)
2. Remove the unit which fastens the terminal cover.
3. Remove the terminal cover.
4. Remove all the leads from the overload protector.
5. Remove the overload protector.
6. Re-install the components by refering to the above

removal procedure. (See figure 14 and 15)

1. Remove the cabinet. (Refer to section 2.1.2)

2. Discharge the refrigerant by using a refrigerant

recovery system.

3. Remove the overload protector.

(Refer to Sec. 2.3.1)

4. After discharging the unit completely, unbraze the

suction and discharge pipes at the compressor
connections.

5. Remove 3 nuts which fasten the compressor.
6. Remove the compressor.

7. Re-install by refering to the above removal

procedure. (See figure 16)

1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the control board. (Refer to section 2.1.3)
3. Discharge the capacitor by placing a 20 K

Ω

resistor across the capacitor terminals.

4. Remove the screw which fastens the capacitor

clamp.

5. Remove all the leads of capacitor terminals.
6. Re-install the components by referring to the

above removal procedure. (See figure 17)

1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the control board. (Refer to section 2.1.3)
3. Remove 2 screws which fasten the thermostat.
4. Remove all the leads of the thermostat terminals.
5. Remove the thermostat.
6. Re-install the components by referring to the

above removal procedure. (See figure 18)

— 8 —

— 9 —

1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the control board. (Refer to section 2.1.3)
3. Remove 2 screws which fasten the rotary switch.
4. Remove all the leads of the rotary switch

terminals.

5. Remove the rotary switch.
6. Re-install the components by refering to the above

removal procedure. (See figure 19)

1. Disconnect the unit from source of power.
2. Remove the front grille. (Refer to Sec. 2.1.1)
3. Remove the cabinet. (Refer to Sec. 2.1.2)
4. Remove the control board. (Refer to Sec. 2.1.3)
5. Remove the upper scroll. (Refer to Sec. 2.2.1)
6. Remove the motor with shroud.

(Refer to Sec. 2.2.2)

7. Remove the fan and blower wheel.

(Refer to Sec. 2.2.3)

8. Re-install by refering to above procedures.

1. Disconnect the unit from source of power.
2. Remove the front grille. (Refer to Sec. 2.1.1)
3. Remove the cabinet. (Refer to Sec. 2.1.2)
4. Remove a screw that sedures control board to

base pan.

5. Pulls the control board toward you.
6. Disconnect the 2 receptacles and remove a

grounding screw.

7. Remove a screw securing the clip with cord to

control board.

8. Pull the power cord.
9. Re-install by refering to above procedures.

1. Remove the cabinet. (Refer to Sec. 2.1.2)
2. Discharge the refrigerant by using a refrigerant

recovery system.

3. Remove the scroll upper. (Refer to Sec. 2.2.1)
4. Remove 3 screws which fasten the condenser.
5. After discharging the refrigerant completely,

unbraze the interconnecting tube at the condenser
connections.

6. Remove the condenser.
7. Re-install by refering to the above procedures.

1. Remove the cabinet.
2. Discharge the refrigerant by using a refrigerant

recovery system.

3. Remove the scroll upper. (Refer to Sec. 2.2.1)
4. After discharge the refrigerant completely, unbraze

the interconnecting tube at the condenser
connections.

5. Remove the evaporator.
6. Re-install by referring to above procedures.

1. Remove the cabinet.
2. Discharge the refrigerant by using a refrigerant

recovery system.

3. Remove the scroll upper. (Refer to Sec. 2.2.1)
4. After discharge the refrigerant completely, unbraze

the interconnecting tube of the capillary tube.

5. Remove the capillary tube.
6. Re-install by referring to the above procedures.

NOTES
Replacement of the refrigeration cycle.

1. When replacing the refrigerant cycle, be sure to

discharge the refrigerant by using a refrigerant
recovery system.

2. After discharging the unit completely, remove the

desired components, and unbraze the pinch-off
tubes.

3. Solder service valves into the pinch-off tube ports,

leaving the vlaves open.

4. Solder the pinch-off tubes with service valves.
5. After doing the above procedures, the vlave must

be closed and left in place on the system for any
subsequent procedures.

6. Evacuate as follows.
6-1. Connect the vacuum pump, as illustrated figure

23A.

6-2. Start the vacuum pump. Slowly open manifold

valves A and B with two full turns
counterclockwise and leave the valves closed.
The vacuum pump is now pulling throygh valves
A and B up to vlave C by means of manifold and
the entire system.

CAUTION : If high vacuum equipment is used, just

crack valves A and B for a few minutes, then open
slowly with the two full turns counter-clockwise.
This will keep oil from foaming and being drawn
into the vacuum pump.

6-3. Operate the vacuum pump for 20 to 30 minutes,

until 600 micron vacum is obtained.
Close valves A and B observe vacuum gauge for
a few minutes.
A rise in pressure would indicate a possible leak
or moisture remains in the system.
With vlaves A and B closed, stop the vacuum
pump.

6-4. Remove the hose from the vacuum pump and

place it on the charging cylinder. See figure 23B.
Open valve C.
Discharge the line at the manifold connection.

6-5. The system is now ready for final charging.
7. Recharge as follows :
7-1. Rotary compressor systems are charged from the

high-side. If the total charge cannot be put in the
high-side, the balance will be put in the suction
line through the access valve which is installed
as the system is opened.

7-2. Connect the charging cylinder as shown in figure

23B. With valve C open, discharge the hose at
the manifold connection.

7-3. Open valve A and allow the proper charge to

enter the system. Valve B is still closed.

7-4. If more charge is required, the high-side does not

take it. Close vlave A.

7-5. With the unit running, open vlave B and add the

balance of the charge.

a. Do not add the liquid refrigerant to the low-side.
b. Watch the low-side gauge, allow pressure to rise

to 30 lbs.

c. Turn off valve B and allow the pressure to drop.
d. Repeat steps B and C until the balance of the

charge is in the system.

7-6. When the unit is operating correctly, use the

pinch-off tool with the unit still running land the
clamp on the pinch-off tube. Using a tube cutter,
cut the pinch-off tube about 2 incheds from the
pinch-off tool. Use sil-fos solder and solder the
pinch-off tube closed. Turn off the unit, allow
setting for a while and then test the leakage of
the pinch-off connection.

— 10 —

— 11 —

Equipment needed : Vacuum pump, chargig cylinder, Manifold gauge, Brazing equipment, Pinch-off tool capable

of making a vapor proof seal, Leak detector, Hand tools to remofe components, Service
valve.

A

B

COMPOUND GAUGE

MANIFOLD
      GAUGE

SEE INSETS

BELOW

CONDENSER

(HIGH PRESSURE SIDE)

COMPRESSOR

CAPILLARY TUBE

EVAPORATOR

(LOW PRESSURE SIDE)

A

B

FIG.23A-Pulling, Vacuum

EXTERNAL VACUUM PUMP

A

B

C

FIG.23B-Charging

LO     HI   CHARGING CYLINDER