New Installations; Field Service - Emerson Copeland YA K1 Series Manual

New Installations

• The copper-coated steel tube fitting on scroll compressors can be brazed in approximately the same
manner as any copper tube.
• Recommended brazing materials: Any silfos material is recommended, preferably with a minimum of 5%
silver. However, 0% silver is acceptable.
• Be sure suction tube fitting I.D. and suction tube O.D. are clean prior to assembly. If oil film is present wipe
with denatured alcohol, Dichloro-Trifluoroethane or other suitable solvent.
• Using a double-tipped torch apply heat in Area 1. As tube approaches brazing temperature, move torch
flame to Area 2.
• Heat Area 2 until braze temperature is attained, moving torch up and down and rotating around tube as
necessary to heat tube evenly. Add braze material to the joint while moving torch around joint to flow braze
material around circumference.
• After braze material flows around joint, move torch to heat Area 3. This will draw the braze material down
into the joint. The time spent heating Area 3 should be minimal.
• As with any brazed joint, overheating may be detrimental to the result.

Field Service

Remove refrigerant charge from both the low and high side of the compressor before cutting the
suction and discharge lines to remove the compressor. Verify the charge has been completely
removed with manifold gauges.
• To disconnect: Reclaim refrigerant from both the high and low side of the system. Cut tubing near
compressor. The compressor should be disconnected using a tubing cutter.
• To reconnect:
✓ Recommended brazing materials: Silfos with minimum 5% silver or silver braze material with flux.
✓ Insert tubing stubs into fitting and connect to the system with tubing connectors.
✓ Follow New Installation brazing instructions above.
© 2020 Emerson Climate Technologies, Inc.
Figure 2 - Scroll Tube Fitting Brazing
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AE4-1486 R1