Scotsman MAR1400 - Manual (Page 30)

Maintenance & Cleaning Instructions
1. GENERAL
The periods and procedure for maintenance and
cleaning are given as guides and are not to be
construed as absolute or invariable.
Cleaning especially will vary depending upon local
water conditions and the ice volume produced and
each ice maker must be maintained individually in
accordance with is own particular location
requirements.
2. ICE MAKER / CONDENSING UNIT
THE FOLLOWING MAINTENANCE MUST BE
SCHEDULED AT LEAST TWO TIMES PER YEAR
ON THIS ICE MAKER. CALL YOUR
AUTHORIZED SCOTSMAN SERVICE AGENCY.
1. Check and clean/replace water line Strainer or
Filter (when used).
2. Remove top panel and depress the float to
ensure that a full stream of water enters the
reservoir.
3. Check that the ice maker cabinet is level in
side-to-side and front-to-rear directions.
4. Check that the water level in the Drum basin is
high enough to surround the wanted portion of
revolving drum.
5. Clean the water reservoir and exterior of the
drum assembly using a solution of SCOTSMAN
Ice Machine Cleaner. Refer to procedure on the
following page, CLEANING ICE MAKER.
NOTE. Cleaning requirements vary according local
water conditions and individual user operation.
6. When doubtful about refrigeration charge, check
gauge for compressor head pressure according to
model technical specification.
7. Check gauge for Suction Line Pressure which
varies depending upon models, inlet water
temperature and ambient temperature.
8. Check drive motor operation. Normal operating
temperatures are about 60EC (160EC) which is hot
to touch. Check with ammeter for Amps drawn.
9. Check V belt for concealed signs of wear and
that has the correct tension. Check pulley
alignment and also that drive motor and gear box
hold down bolts are tight enough.
10. Make sure that water lines in water cooled
condenser are free from any excess of water
minerals: otherwise arrange to clean the tubes with
a power driven wire brush or running through it a
weak acid solution made with 20 percent of
hydrochloric acid.
11. Check for refrigerant leaks and for proper frost
line, which should frost out of accumulator at least
half way to the compressor and in some areas,
back to service valve.
Check for dryness of system through moisture
indicator if any.
12. Check for water leaks. Tighten drain line
connections. Pour water down drain to be sure that
drain line is open and clear.
13. Check the quality of ice. Ice flakes should be
dry and have a thickness gauge of about 2 m/m.
14. Check compressor oil level through sight glass.
Stop unit operation and after two/three minutes
see that oil level is 2/3 millimeters above center
line of sight glass.
15. Be sure of proper position and condition of
plexiglass chute on spout opening.
MAR1400 & MAR2000
December 2000
Page 30