Hoshizaki 1800ALKE(-N), Руководство по обслуживанию

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141
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.
13) Remove the bulb of the expansion valve.
14) Disconnect the brazing connections of the expansion valve and the copper tube - low
side from the evaporator, using brazing equipment.
WARNING
Always protect the valve body by using a damp cloth to prevent the valve from
overheating. Do not braze with the valve body exceeding 120°C.
15) Remove the two truss head machine screws and the strap securing the evaporator.
16) Disconnect the hoses from the evaporator.
17) Remove the four socket head cap screws securing the evaporator with the housing.
18) Lift off the evaporator.
HOUSING AND MECHANICAL SEAL
19) The mechanical seal consists of two parts. One part rotates with the auger, the other is
static and is fitted into a top recess in the housing. If the contact surfaces of these two
parts become worn or scratched, the mechanical seal may leak water and should be
replaced.
20) Remove the O-ring on the top outer edge of the housing.
21) Remove the four bolts and lift the housing clear of the gear motor. Check the bearing
inside the housing. If it is worn or scratched, replace it using a fitting tool. Carefully ease
out the lower part of the mechanical seal before replacing the bearing.
Note: If a fitting tool is not available, replace the whole lower housing complete with
bearing.
GEAR MOTOR
22) Cut the connectors.
23) Remove the three socket head cap screws securing the gear motor.
24) Assemble the removed parts in the reverse order of which they were removed.