Scotsman MAR 106, Руководство по обслуживанию

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SECTION IV
ADJUSTMENT & REMOVAL & REPLACEMENT PROCEDURES
The procedures provided in this section are
arranged in order to make specific adjustment
and removal and replacement information easy
to locate.
Read the instructions throughly before performing
any adjustment or removal or replacement
procedures.
1. ADJUSTMENT OF THE WATER
REGULATOR ASSY
(Water Cooled Models)
Adjustements can be performed on the Water
Regulator Assembly to increase or decrease the
head pressure.
To adjust the Water Regulator Assembly:
A. To INCREASE the Head Pressure: rotate the
adjusting screw on the Water Regulator
Assembly IN or CLOCKWISE.
B. To DECREASE the Head Pressure: rotate
the adjusting screw on the Water Regulator
Assembly OUT or COUNTERCLOCKWISE.
2. ADJUSTMENT OF THE AUTOMATIC
EXPANSION VALVE
The end to end frost on evaporator drum is the
result of the correct expansion valve setting.
This valve may be manually regulated by means
of the adjusting stem.
Turning the adjustment to the left counter-
clockwise, will increase the rate if refrigerant
flow.
Turning the adjustment to the right (clockwise),
the refrigerant flow to the evaporator is reduced.
Use hex head wrench for manual adjusting
operations.
WARNING - Be sure the electrical power
supply and water supply are OFF, before
starting any of the following REMOVAL
AND REPLACEMENT procedures as a
precaution to prevent possible personal
injury or damage to equipment.
3. CHANGING V BELT FROM SMALLER
PULLEY GROOVE TO LARGER
PULLEY GROOVE TO MAKE THIN ICE.
1. Remove top, front right panel and right side
panels.
2. Through the front, by means of socket wrench,
slightly unloose two head hex screw securing
the sleigh that supports the motor.
3. Through the right side, slightly unloose the
nut located in correspondence of the sleigh
button hole.
4. The sleigh with the motor should be able to
slide vertically.
5. Slid-off V belt from motor pulley.
6. Unloose and remove hex head screw that
secure step pulley on motor shaft.
7. Remove step pulley from motor shaft and
replace the same with alternative-supplied
one.
8. Tighten pulley on motor shaft by means of
hex head screw previously removed.
9. Place V belt on groove of motor pulley and of
gear box pulley.
10. Raise the sleigh with motor and pulley to give
a rough tension to V. Belt.
11. Tighten slightly the two hex head bolts and
the nut previously unloosed.
12. Correct tension of V belt by moving upward or
downward the Sleigh/Drive Motor assembly.
13. When satisfied with V belt tension, which
should be snug but not tight, proceed to
definitively tighten the hex head bolts and
nuts that secure motor support sleigh to side
frame of drum basin.
4. REMOVAL AND REPLACEMENT OF THE
COMPRESSOR ASSEMBLY
NOTE. Always install a replacement Drier,
anytime the sealed Refrigeration System is
opened. Do not replace the Drier until all
other repairs or replacements have been
completed.
A. To remove the Compressor Assembly:
1) Remove cover from the Compressor Junction
Box.
2) Disconnect the electrical leads at the
Compressor Junction Box that originate in the
Control Box.
3) Recover the refrigerant from the system and
transfer it in a bottle so to reclaim or recycle it.
4) Disconnect the suction line from the
compressor.