Cornelius 750 Pre-Mix manual Do Not Vent Refrigerant To Atmosphere, Kit Installation

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 CO2 .

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