45
1) Turn off the power supply.
2) Remove the panels.
3) Recover the refrigerant and store it in an approved container.
4) Remove the screw and the solenoid.
5) Disconnect the hot gas valve or line valve using brazing equipment.
6) Install the new valve.
CAUTION
Always protect the valve body by using a damp cloth to prevent the valve from
overheating. Do not braze with the valve body exceeding 250°F (121°C).
7) Install the new drier.
8) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
9) Evacuate the system, and charge it with refrigerant. For air-cooled and water-cooled
models, see the nameplate for the required refrigerant charge. For remote air-cooled
models, see the charge label in the machine compartment.
10) Cut the leads of the solenoid allowing enough lead length to reconnect using closed
end connectors.
11) Connect the new solenoid leads.
12) Attach the solenoid to the valve body, and secure it with a screw.
13) Replace the panels in their correct positions.
14) Turn on the power supply.
G. Removal and Replacement of Evaporator
IMPORTANT
Always install a new drier every time the sealed refrigeration system is opened.
Do not replace the drier until after all other repairs or replacement have been
made.
1) Turn off the power supply.
2) Remove the panels and the top insulation over the evaporator.
3) Recover the refrigerant and store it in an approved container.
4) Remove the spray tubes and the insulations at the "U" shaped notch where the
refrigeration tubings go through the molded chassis.
5) Remove the insulation tube, and disconnect the evaporator inlet tubing at the tee next
to the expansion valve.
6) Lift up the evaporator, and disconnect the evaporator outlet tubing.
7) Install the new evaporator.
8) Install the new drier.
9) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
Summary of Contents for KM-1340MAH
Page 8: ...8 B Condensing Unit 1 URC 14F ...
Page 10: ...10 II General Information A Construction 1 KM 1340MAH air cooled ...
Page 11: ...11 2 KM 1340MWH water cooled ...
Page 12: ...12 3 KM 1340MRH remote air cooled ...
Page 24: ...24 2 KM 1340MWH water cooled ...
Page 25: ...25 3 KM 1340MRH remote air cooled ...
Page 27: ...27 2 KM 1340MRH remote air cooled Pressure Switch Cut out 412 21 3 PSIG Cut in 327 21 3 PSIG ...
