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7. 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.
10) 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.
11) Replace the removed parts in the reverse order of which they were removed.
12) Replace the Top Insulation and the panels in their correct positions.
13) Turn on the power supply.
Summary of Contents for KM-900MAF
Page 9: ...9 5 CONDENSING UNIT URC 12F ...
Page 11: ...11 II GENERAL INFORMATION 1 CONSTRUCTION a KM 900MAF ...
Page 12: ...12 b KM 900MWF ...
Page 13: ...13 c KM 900MRF ...
Page 14: ...14 d KM 900MRF3 ...
Page 27: ...27 III TECHNICAL INFORMATION 1 WATER CIRCUIT AND REFRIGERANT CIRCUIT a KM 900MAF ...
Page 28: ...28 b KM 900MWF ...
Page 29: ...29 c KM 900MRF and KM 900MRF3 ...
Page 31: ...31 b KM 900MWF Note Pressure Switch Cut out 412 PSIG Cut in 327 21 PSIG 21 0 ...
Page 32: ...32 c KM 900MRF Note Pressure Switch Cut out 412 PSIG Cut in 327 21 PSIG 21 0 ...
Page 33: ...33 d KM 900MRF3 Note Pressure Switch Cut out 412 PSIG Cut in 327 21 PSIG 21 0 ...