Hoshizaki IM-100, Service Manual

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105
5. EVAPORATOR
IMPORTANT
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 Top, Front (Upper) and Rear Mesh 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 the four nuts holding the Evaporator.
7) Install the new Evaporator, and secure it with the Bolts, Collars (Spacer) and Nuts.
8) Remove and replace the Drier (See “3. DRIER”).
9) Braze pipes, with nitrogen gas flowing at a 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 panels in their correct positions.
13) Plug in the icemaker or connect the power source.