Scotsman MAR1400 - Manual (Page 9)

Location Consideration
WARNING - MAR SCALE ICE MAKERS are not
designed for outdoor installations where air
temperature falls below 5EC (40EF) or may
exceed 40EC (100EF)
Operating a machine with an unacceptable
configuration will void the refrigeration system
warranty.
For installation on board of fishing vessels, the
location for the condensing unit is generally the
engine room, while the evaporator unit can be
permanently placed in some area of the
deck-house or, if it is not too cold (not below 5EC
or 40 o F.), inside the fish and ice hold.
If the MAR unit will be mounted to a fabricated
stand, it must be adequately fastened to it.
The stand must also be sturdy so it does not cause
excessive vibration and must be able to be
securely fastened to the wall or to the floor.
Placement of the MAR unit must take into
consideration where the ice is discharged and
what type of container (ice storage bin or walk-in)
will be used.
REFRIGERANT LINES
The diameter of refrigerant lines going from
condensing unit to evaporator unit and back must
be of adequate size in relation to tubing length.
The table below show the recommended sizes of
refrigerant lines:
Note: The tubing connections at the MAR unit are
3/8” liquid and 5/8” suction.
Insulate any lines that will be exposed to
temperatures that will be below freezing for
extended periods of time.
Follow straight line routing, when possible,
however pitch the suction line 2 cm per meter or
¾” per yard.
Do not restrict the liquid line. Bends and fittings
should be the minimum necessary as they can
increase the resistance to the fluid flow.
If using a semi-hermetic compressor, the use of
vibration absorbers near the condensing unit will
help to reduce condensing unit vibration traveling
into the lines.
Because the appearance of an installation is
important, the piping should be put-in as neatly as
possible.
For best sound absorption, it is best to put-in two
absorbers in each line, one vertically and one
horizontally.
For evacuation and charging operations two
service valves must be provided. One on the liquid
line and one on the suction line.
A drier and a sight glass should be installed in the
liquid line at the condensing unit.
MAR1400 & MAR2000
December 2000
Page 9
Length of Tubing Run Suction Line Liquid Line
4 to 15 meters (11 to 50 feet) 18 mm ID (3/4” OD) 12 mm ID (1/2” OD)
Less than 3 meters (10 feet) 14 mm ID (5/8” OD) 14 mm ID (3/8” OD)