background image

5

189159001

WARNING: To avoid eye injury, wear protective glasses or goggles while working with
refrigerant or brazing.

DO NOT VENT REFRIGERANT TO ATMOSPHERE

NOTE: Work in a well-ventilated area. Refrigerant is not toxic, but will displace air. Fumes from brazing
contain toxic gases.

1. Remove refrigerant from the unit as follows:

2. At the compressor, install a tap line in the suction process line.

3. At the dual inlet drier, install a second tap line valve on the discharge process line.

4. Connect the tap line valves to the refrigerant recovery system and draw off the refrigerant.

KIT INSTALLATION

1. Very carefully (see Figure 1), bend COPPER EVAPORATOR COIL (item 4) long tube from shipping posi-

tion to installation position. BE VERY CAREFUL DURING BENDING NOT TO KINK TUBE.

2. Install COIL SPACERS (item 5) on COPPER EVAPORATOR COIL (item 4).

3. Very carefully, install copper evaporator coil assembly in evaporator tank with coil inlet and outlet tubes

positioned in corner where front and side panels are separated.

4. Cut old evaporator coil refrigeration tubes off 2-inches below evaporator tank aluminum tubes inside lower

part of unit. Pinch off or plug tubes.

5. Remove old suction line assembly, including accumulator and old dual-inlet strainer dryer, from inside unit.

6. Very carefully (see Figure 1) bend SUCTION LINE ASS’Y (item 1) from shipping position to installation

position. BE VERY CAREFUL DURING BENDING NOT TO KINK TUBE.

7. Place new SUCTION LINE ASS’Y (item 1) in position inside unit. Larger suction line and capillary tube to

be routed from lower part of unit up through opened corner to inside of evaporator tank.

8. Place large suction line inside line leading up from bottom of copper evaporator coil. Place capillary tube in

line leading from top side of evaporator coil.

9. Using proper soldering procedure, solder copper evaporator coil tube connections.

CAUTION: STRAINER DRYER, DUAL INLET (item 8) must be installed in horizontal position
to avoid premature compressor failure.

NOTE 1–Cap tube must not be cut off more than 2-inches. (NOTCH WITH FILE AND BREAK OFF.)

NOTE 2–Cap tube must not be inserted into drier opening more than 1/2-inch.

NOTE 3–Drier must not be uncapped more than 10 minutes before brazing into system.

WARNING: To avoid possible personal injury, do not apply heat to a charged system.

 

10. Connect ‘‘dry’’ nitrogen (–75

°

F dewpoint minimum) into refrigeration system to purge system. DO NOT

PURGE WITH CO

2

.

Summary of Contents for Universal 750 Pre-Mix

Page 1: ...hese instructions as part of your equipment manual UNPACKING THE KIT Unpack and inspect the kit Make sure Loose Shipped Parts are present and in good condition see Figure 1 Table 1 Loose Shipped Parts...

Page 2: ...eter 0 300 VAC To measure line voltage 9 Ohmmeter 0 10 and 100 000 ohms To check resis tance of electrical circuitry 10 Leak detector capable of detecting at least 1 2 ounce year To detect refriger an...

Page 3: ...nd lay them off to one side 7 Unit with sealed evaporator tank A Very carefully lift product coil basket up out of evaporator tank and lay them off to one side IMPORTANT If evaporator tank has hole in...

Page 4: ...ATOR TANK ONLY COVER RETAINING SCREW 8 CUT OUT WITH HACK SAW PLATE GASKET SUCTION LINE ASSEMBLY ITEM 1 INSTALLATION POSITION SCREW 4 ITEM 6 SIDE PANEL RETAINING SCREW 4 ACCESS GRILLE RETAINING SCREW 4...

Page 5: ...ide lower part of unit Pinch off or plug tubes 5 Remove old suction line assembly including accumulator and old dual inlet strainer dryer from inside unit 6 Very carefully see Figure 1 bend SUCTION LI...

Page 6: ...ation system with 10 ounces of clean dry R 12 refrigerant ASSEMBLY 1 Push corner of unit side and front panel together 2 Install THREAD ROLLING SCREWS item 6 in first four holes top to bottom to secur...

Page 7: ...hex nuts L Connect agitator motor ground wire and power cord M Connect product inlet line swivel nut connectors to product coil line fittings on cover assembly IMPORTANT Install RUBATEX INSULATION it...

Page 8: ......

Reviews: