114 PB
R-410A REFRIGERANT SYSTEM REPAIR
Compressor Replacement ‑Special Procedure in Case of Compressor Burnout
1. Recover all refrigerant and oil from the system.
2. Remove compressor and EEV.
3. Flush evaporator, condenser and all connecting tubing with dry nitrogen or
equivalent. Use standard ushing agent to remove all contamination from system.
Inspect suction and discharge line for carbon deposits. Remove and clean if
necessary. Ensure all acid is neutralized.
4. Reassemble the system.
5. Pressurize with a combination of R-410A and nitrogen and leak test all
connections. If a leak cannot be found, pressurize with a combination of Nitrogen
and a trace charge of R-410A and sweep with with an electronic or Halide leak
detector. Recover refrigerant and repair any leaks found.
5a. If leak detector is unavailable remove all refrigerant from system and
pressurize with nitrogen to 550 psi. Check that system holds pressure.
Repeat Step 5 to insure no more leaks are present
6. Evacuate and charge the system. Refer to the evacuation and charging section
of this manual. While the unit is being evacuated, seal all openings on the
defective compressor. Compressor manufacturers will void warranties on units
received not properly sealed. Do not distort the manufacturers tube connections.
WARNING
HIGH PRESSURE HAZARD
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Failure to follow these procedures could
result in serious injury or death.
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation. Extreme care must be used, if it
becomes necessary to work on equipment with
power applied.
Failure to do so could result in serious injury or
death.
WARNING
EXPLOSION HAZARD
The use of nitrogen requires a pressure
regulator. Follow all safety procedures and
wear protective safety clothing etc.
Failure to follow proper safety procedures
could result in serious injury or death.
WARNING
NEVER, under any circumstances,
liquid charge a rotary-compressor
through the LOW side. Doing so
would cause permanent damage to
the new compressor. Use a charging
adapter.
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