39
8) Braze all fittings with nitrogen gas flowing at a pressure of 3 to 4 PSIG.
CAUTION
Always protect the headmaster body by using a damp cloth to prevent it from
overheating. Do not braze with the headmaster body exceeding 50°F (11°C).
9) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
10) Evacuate the system and charge it with refrigerant. See the nameplate on the
condensing unit for the required refrigerant charge.
11) Replace the panels in their correct positions.
1) Turn on the power supply.
5. Removal and Replacement of Fan Motor
Note: When replacing a fan motor with defective winding, it is recommended that a new
capacitor be installed.
1) Turn off the power supply.
) Remove the panels.
3) Remove the closed end connectors from the fan motor leads.
4) Remove the fan motor bracket and fan motor.
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 flow.
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.
