Removal And Replacement Of Evaporator - Hoshizaki KM-150BAF Service Manual

7. REMOVAL AND REPLACEMENT OF EVAPORATOR

Always install a new Drier every time the sealed refrigeration system is
opened. Do not replace the Drier until after all other repairs or replacements
have been made.
1) Turn off the power supply, and unplug the icemaker.
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) Remove the screws holding the Evaporator to the plastic Rear Panel.
7) Lift up the Evaporator, and disconnect the Evaporator Outlet Tubing.
8) Install the new Evaporator.
9) Install the new Drier.
10) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
11) Evacuate the system, and charge it with refrigerant. See the Nameplate for the
required refrigerant charge.
12) Replace the removed parts in the reverse order of which they were removed.
13) Replace the Top Insulation and the panels in their correct position.
14) Plug in the icemaker, and turn on the power supply.
IMPORTANT
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