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D. Removal and Replacement of Condenser
1. Always install a new drier every time the sealed refrigeration system is
opened.
2. Do not replace the drier until after all other repair or replacement has been
made. Install the new drier with the arrow on the drier in the direction of the
refrigerant flow.
3. When brazing, protect the drier by using a wet cloth to prevent the drier from
overheating. Do not allow the drier to exceed 250°F (121°C).
1) Move the power switch to the "OFF" position, then unplug the unit.
2) Remove the condenser shroud.
3) Recover the refrigerant and store it in an approved container. See "V.A. Service for
Refrigerant Lines."
4) Disconnect the condenser tubing, then remove the condenser.
5) Place the new condenser in position.
6) Remove the drier, then place the new drier in position.
7) Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG.
See "V.A.2. Brazing."
8) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the system (if using an electronic leak detector), and then raise the
pressure using nitrogen gas (140 PSIG). DO NOT use R-404A or R-134a as a mixture
with pressurized air for leak testing.
9) Evacuate the system, and charge it with refrigerant. See "V.A.3. Evacuation and
Recharge." See the nameplate for the required refrigerant and refrigerant charge.
10) Replace the condenser shroud in its correct position. WARNING! To reduce the risk
of electric shock, confirm that the condenser fan motor ground wire is properly
connected.
11) Plug the unit back in. Move the power switch to the "ON" position.
CAUTION
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