Removal And Replacement Of Evaporator - Hoshizaki KM-280MAF-E Service Manual

12) Refit the panels in their correct positions.
13) Plug in the icemaker. Turn on the power supply.

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 replace-
ments have been made.
1) Turn off the power supply. Unplug the icemaker.
2) Remove the panels and the Top and Front Insulation from the Evaporator.
3) Recover the refrigerant and store it in an approved container. (See "1. [a] RE-
FRIGERANT RECOVERY".)
4) Remove the Spray Tubes and the Insulations at the "U" shaped notch where the
refrigeration tubings go through the chassis.
5) Remove the Insulation Tube, and disconnect the Evaporator Inlet Tubing at the Tee
next to the Expansion Valve using brazing equipment. (Protect the valve from
excessive heat.)
6) Lift up the Evaporator, and disconnect the Evaporator Outlet Tubing.
7) Install the new Evaporator with nitrogen gas flowing at 0.2 - 0.3 BAR.
8) Install a new Drier (See "4. REMOVAL AND REPLACEMENT OF DRIER.)
9) Check for leaks using nitrogen gas at 10 BAR and soap bubbles.
10) Evacuate the system, and charge it with refrigerant. See the Nameplate for the
required refrigerant charge. (See "1. [b] EVACUATION AND RECHARGE".)
11) Replace the removed parts in the reverse order of which they were removed.
12) Refit the Top, Front Insulation and the panels in their correct positions.
14) Plug in the icemaker. Turn on the power supply.
IMPORTANT
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