INITIAL START UP
9. Check operation of the freezing cycle: Ice will
begin to from from the top of the evaporators
down. After the first cycle, freezing time will range
between 12 and 15 minutes. Longer time for
temperatures above 70
o
F. and shorter time
required when temperatures are below 70
o
F.
Average complete cycle time is about 16 minutes.
10. After an ice harvest, check Cube Size. There
is just enough water available in the reservoir to
make one full sized batch of cubes. As the water
level falls, the water pump may pick up some air at
the end of the freezing cycle, so bubbles in the
pump discharge tube at the end of freeze is
normal. If the water pump runs out of water before
the end of freeze, the cube size control may be set
too cold, or the water system may be leaking water.
Compare cube size to the "Cube Size Diagram"
To adjust cube size, locate cube size control in the
front of the control box, and rotate the adjustment
screw one eighth of a turn:
••
COUNTER Clockwise for a SMALLER cube
••
Clockwise for a LARGER ice cube
Observe size of the ice in the next ice cube
harvest and repeat the adjustment until the correct
ice cube size is achieved.
11. Check Harvest Time. There must be enough
time in harvest to defrost all the cubes, but not an
excessive amount that will waste capacity. The
length of the harvest cycle is determined by the
timer cam positions.
If needed, adjust the harvest time so that there are
about 15 seconds of harvest time left after the last
cube has fallen off the evaporators.
Because harvest time varies with the water and air
temperatures at the ice machine, colder air and
water will result in faster ice making, but require
longer harvest cycles. Do NOT adjust harvest
time too short or the unit will not harvest all the
ice.
The harvest time is set by: loosening the set screw
on the cam, rotating the shaft so that the opening
between the cams increase or decrease,
retightening the set screw when the cams are in
the correct position. More of an opening between
the cams high areas= more harvest time.
An adjustment of the cube size control may be
needed after the harvest time has been changed,
so check cube size again.
12. Check Bin Ice Level Control: With the unit in
the harvest cycle, place something directly below
the transducer socket (located in the base just to
the left of the evaporators). The machine will
switch off at the END OF THE HARVEST CYCLE.
Within seconds after removal of the obstruction,
the icemaker will restart. This control has two
positions, FULL and PARTIAL. Full shuts off when
ice is 8" from the bottom of the ice machine. The
control will not work on bins taller than 8’.
13. Replace all covers, panels and screws.
14. Fill out and mail in the Warranty Registration
and Customer Evaluation form. Explain to the
owner/user the operation, and maintenance
requirements of the machine. Be sure to leave the
name and telephone number of the local
SCOTSMAN Distributor, or service agency.
JUST RIGHT
TOO SMALL
When the cubes are the correct size, they will be
connected together vertically, and drop off in strips.
The batch weight will be about 13.5 to 14.5 lb.
Note: If the cubes at the bottom rows of some evaporators
are smaller than others, the size difference does not affect
capacity or performance. However, there should be some
ice in all cells. If not, contact the Factory.
CUBE SIZE DIAGRAM
CAM
SET SCREW
ADJUSTING
HARVEST
TIME
CMS1202R
September 1993
Page 11
