Scotsman MAR 106, Руководство по обслуживанию

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SECTION I
GENERAL INFORMATION & INSTALLATION
1. DESCRIPTION
An attractive compact cabinet of stainless steel
with control panel lights on the front. All panels
are removable to allow easy access to electrical
and mechanical components for cleaning and
maintenance.
Sealed Refrigeration System
To provide quite efficient operation of the ice
maker, the compressor is mounted on rubber
cushions. The water cooled models have a tube
within tube condenser with water regulation val-
ve for correct condensing water flow. The air
cooled models, except the MAR 306 have a built
in condenser in copper and aluminium with the
fan motor controlled by pressure control. The
evaporator drum is powered by a separate drive
motor connected by a V-belt and pulley system to
a double gear box. The refrigerant used is R 404a
controlled by automatic expansion valve.
Storage Bin or Ice Room
Since the MAR Scale is a continuous flow type
ice maker and does not have its own attached
storage bin, it is necessary to use an auxiliary bin
or a pre-fabricated ice room for appropriate ice
storage.
Ice storage situations are of two kinds:
a) Short term storage
b) Extended terms storage
Being, as stated, scale ice made by MAR
machines flat, dry and subcooled, therefore with
the tendency to stick toghether, particular
attention is required for proper ice storage
conditions for better ice handling. An insulated
ice storage bin or rooms is always required, then
according to ice end use application, this can be
refrigerated on non-refrigerated.
Also a weight volume ratio of 2,1 cu. mt. per
ton, must be taken into consideration for correct
ice storage.
a) Non-refrigerated room for short term
storage.
The scale ice is produced continuously for 24
hours per day, whereas the use period is
generally for no longer than 8 hours per day.
Therefore storage facilities should be provided
to accomodate a minimum of 16 hours of
production, this means that every scale ice
machine must be installed with a properly
insulated storage room which should have a
minimum capacity of 2/3 the daily ice
production.
With a well insulated room and duly subcooled
scale ice, the limited losses of heat throught
the walls of a properly designed room with
adequate arrangements, are largely offset,
and excess melting will not occur. In most
situations where whole quantity of ice produced
is being used on a daily basis, it is not necessary
to provide cooling for the ice storage room.
b) Refrigerated room for extended storage
and long distance conveying.
When scale ice is to be transported at a
considerable distance, such as aboard fishing
vessels, or in locations with normal ambient
temperatures conditions, or when used in
industrial plants where demand is intermittent,
its subcooling power must be absolutely
preserved in the storage bin by a proper
cooling system keeping air temperature at a
pre-established and constant value. The ideal
ice storage room is the type with mechanically
refrigerated jacket space surrounding the ice
bin. Good practice calls for an ice storage
capacity of about two times the daily ice
machines production with an inside tempera-
ture of -6
°
C minimum (20
°
F).
2. UNPACKING AND INSPECTION
1. Call your authorized SCOTSMAN Distributor
od Dealer for proper installation.
2. Visually inspect the exterior of the shipping
container and skid and any severe damage
noted should be reported to the delivering
carrier; and a concealed damage claim filled
subject to internal inspection, with carrier
representative present.
3. Remove the packing and remove the shipping
bolts and the shipping base or skid.
4. When necessary, install the leg levellers in
the cabinet base sockets; then, raise the
cabinet to the upright position.
5. Remove screws and shipping tapes and all
doors and service panels from the cabinet and
inspect for any concealed damage.
Notify carrier of any concealed damage claims
as stated in step 2 above.
6. Remove all internal support packing, tape
and wires in machinery compartment.
7. Check that refrigerant lines do not rub or
touch lines or surfaces and that fan blades, if
any, moves freely.
8. Check that compressor is snug on all mounting
pads.
9. Use clean damp cloth or disposable paper
wiper to wipe clean the exterior surface of the
cabinet.