Evaporator - Hoshizaki IM-45WNE Service Manual

5. EVAPORATOR

Always install a new drier every time the sealed refrigeration system is
opened. Do not replace the drier until after all other repair or replacement
has been made.
1) Unplug the icemaker or disconnect the power source.
2) Remove the front and rear panels.
3) Recover the refrigerant and store it in a proper container, if required by an applicable
law (See "1. [b] REFRIGERANT RECOVERY").
4) Remove the water pan assembly, referring to "8. WATER PAN ASSEMBLY".
5) Disconnect the solder connections on the evaporator using brazing equipment.
Protect the expansion valve from excessive heat.
6) Remove four nuts holding the evaporator.
7) Install the new evaporator, and secure it with the bolts, collars (spacer) and nuts.
8) Install the new drier (See "3. DRIER").
9) Braze pipes, with nitrogen gas flowing at the pressure of 0.2 - 0.3 bar.
10) Check for leaks using nitrogen gas (10 bar) and soap bubbles.
11) Evacuate the system and charge it with refrigerant (See "1. [c] EVACUATION AND
RECHARGE").
12) Replace the removed panels in their correct positions.
13) Plug in the icemaker or connect the power source.
IMPORTANT
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