Installation manual

Refrigeration Compressor Kit Installation Manual

REMOVAL OF EXISTING COMPRESSOR

1. Slide suction line insulation as far as possible away from work area to prevent heat damage.

2. Place heat shields around electric wiring, insulation, and painted surfaces to protect from accidental heat dam-

age.

WARNING:

Nitrogen pressure must equal atmospheric pressure before heat is applied to system tubing.

3. With refrigeration system pressure at 0-psi, use torch to remove suction and discharge lines from the compres-

sor ports.

4. Remove cap tube and liquid lines from the dual inlet strainer/drier. Discard old dual inlet strainer/drier.

5. Remove mounting clips or bolts securing the compressor, then remove the old compressor.

INSTALLING KIT

(see Figure 1)

1. Polish tubing ends with emery cloth or a wire brush. Do not allow grit to enter tubing. Carefully clean tubing

ends.

2. Place new compressor in position on the Unit, then secure compressor with clips or bolts.

IMPORTANT: The dual inlet strainer/drier and the new compressor must not be uncapped for more

then 10-minutes before brazing them into the refrigeration system.

3. Install new suction process line in compressor suction process port (low-side). Do not braze connections at this

time.

4. Insert discharge line into compressor discharge port.

NOTE: The suction filter/drier (if provided in the kit) must be installed in a vertical position in the

suction line close to the compressor as shown in Figure 1.

5. Insert suction line into compressor suction line port. Cut a section out of suction line to allow installing the new

suction filter/drier in a vertical position in the suction line. Do not braze connections at this time.

CAUTION:

The new discharge or liquid dual inlet strainer/drier must be installed in a horizontal position for proper system

operation.

6. Install a new dual inlet strainer/drier as follows:

NOTE: Cap tube must not be cut off more than 2-inches (Notch cap tube with a file, then break tube

off). Cap tube must not be inserted more than 1/2-inch into dual inlet strainer/drier opening.

A. Install new dual inlet strainer/drier in horizontal position. Insert liquid line and cap tube into drier ports. Do

not insert cap tube more than 1/2- inch into drier port. Do not braze connections at this time.

B. Insert new discharge process line (high-side) into dual inlet strainer/drier port. Do not braze connections at

this time.

NITROGEN FLUSHING AND BRAZING

Flush the refrigeration system with “dry” nitrogen (-75° F dew point) as follows:

1. Connect nitrogen source to both process lines of the refrigeration system to purge the system before brazing

sys

tem connections.

2. Purge the refrigeration system with dry nitrogen for at least 10-minutes, then disconnect nitrogen source.

NOTE: Work in a well-ventilated area. Fumes from brazing may contain toxic gases.

3. Braze all refrigeration system connections.