Scotsman Prodigy Elite MC0322 Service Manual page 12

MC0322 through MC2148
Air, Water, and Remote Cooled Service Manual
General Installation - Remote
Do not connect the refrigerant tubing until all routing and forming of the tubing is complete. Final connections
requires brazing, steps must be performed by an EPA certified type II or higher technician. The Lineset of
tubing contains a 3/8" diameter liquid line, and a 1/2" diameter discharge line.
Note: The openings in the building ceiling or wall, listed in the next step, are the minimum sizes
recommended for passing the refrigerant lines through.
2. Have the roofing contractor cut a minimum hole for the refrigerant lines of 1 3/4". Check local codes, a
separate hole may be required for the electrical power supply to the condenser.
Caution: Do NOT kink the refrigerant tubing while routing it.
At Condenser:
1. Remove protective plugs from both connections and vent the nitrogen from the condenser.
2. Remove the tubing access bracket to allow more room for brazing.
3. Route the lineset tubes to there connection.
4. Clean tubing ends and position into stubs.
Note: Be sure tube and stubs are round, dress with swage tool if needed.
At Head:
1. Remove the tubing access bracket to allow more room for brazing.
1. Confirm connection ball valves are fully closed.
2. Remove protective plugs from both connections.
3. Remove caps from access valve connections.
4. Remove cores from access valves.
5. Connect refrigeration hoses to access valves.
6. Connect dry nitrogen source to liquid line connection.
7. Shorten tubing to correct length, clean ends and insert them into valve stubs.
Note: Be sure tube and stubs are round, dress with swage tool if needed.
8. Add heat sink material to ball valve body.
9. Open nitrogen and flow 1 psi nitrogen into liquid line tube and braze the liquid line and suction line tubes to
the valve stubs.
10. With nitrogen flowing braze the liquid and suction line connections.
At Condenser:
1. Braze the liquid and suction line connections.
At Head:
1. Remove nitrogen source.
2. Return valve cores to access valves.
3. Connect vacuum pump to both access valves and evacuate tubing and head to at least a 300 micron level.
4. Remove vacuum pump and add R-404A to both tubes to provide a positive pressure.
5. Leak check the all braze connections and repair any leaks.
6. Locate king valve off receiver, located near the back wall of most models. Fully open king valve.
7. Open both ball valves, making sure they're fully open.
Note: The full refrigerant charge is contained in the receiver of the ice machine.
January 2022
Page 12