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5) Install the new fan motor and replace the removed parts in the reverse order of which
they were removed.
6) Replace the panels in their correct positions.
7) Turn on the power supply.
C. Icemaker
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. Install the new drier with the arrow on the drier in the direction of
the refrigerant ow.
Note: Because the pipes in the evaporator case are specially coated to resist corrosion,
it is important to make connections outside the evaporator case when possible. If
it is necessary to braze inside the evaporator case, use sandpaper to remove the
coating from the brazing connections before unbrazing the components.
1. Removal and Replacement of Evaporator
1) Turn off the power supply.
) Remove the panels and insulation pieces.
3) Recover the refrigerant and store it in an approved container.
4) Remove the spray tubes and the insulation at the "U" shaped notch where the
refrigeration tubing passes through the molded chassis.
5) Disconnect the evaporator tubing.
6) Remove the pop rivets securing the evaporator, then lift out the evaporator.
7) Install the new evaporator.
8) Remove the drier, then place the new drier in position. Install the new drier with the
arrow on the drier in the direction of the refrigerant ow.
9) Braze all ttings while purging with nitrogen gas owing at a pressure of 3 to 4 PSIG.
10) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the system (if using an electronic leak detector), and then raise the
pressure using nitrogen gas (140 PSIG). DO NOT use R-404A as a mixture with
pressurized air for leak testing.
11) Evacuate the system, and charge it with refrigerant. See the nameplate on the
condensing unit for the required refrigerant charge.
1) Replace the removed parts in the reverse order of which they were removed.
13) Replace the insulation pieces and the panels in their correct positions.
14) Turn on the power supply.