Scotsman CME1202 User Manual page 13

INITIAL START UP
9. Check operation of the freezing cycle: Ice will
begin to form 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
required when temperatures are below 70
Average complete cycle time is about 14 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 drops, the water pump may pick up
some air at the end of the freezing cycle so some
bubbles in the pump discharge hose 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 the 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 SMALLER ice cubes
Clockwise for LARGER ice cubes
Observe size of the ice in the next ice cube
harvest and repeat adjustment until correct ice
cube 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 there are
about 15 seconds of harvest time left after the last
cube has fallen from 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 to open or close the
distance between the high part of the cams, and re
tightening the set screw. More of an opening
between the cams high areas=more harvest time.
An adjustment of the cube size may be needed
after the harvest time has been changed, so check
the cube size again.
o
F. and shorter time
o
F.
CME1202R & CME1402R
JUST RIGHT
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 ice in all cells. If not, contact the Factory.
TOO SMALL
SET
SCREW
12. Check Bin Ice Level Control. When the unit is
in the harvest cycle, place something solid against
the transducer socket (located in the base to the
left of the evaporators). The machine will switch off
at the END OF THE HARVEST CYCLE, and will
restart when the object is removed. The control
has a Full and a Partial position. At Full, the
machine will switch off when ice is 8" from the
transducer socket. The control will not work on
bins taller than 8'. Note: Even when full the unit will
make a batch of ice if switched off and then on.
13. Replace all covers, panels and screws.
14. Fill out the Warranty Registration and
Customer Evaluation form. Explain to the user the
maintenance requirements of the ice machine.
Inform the user of the name and telephone
number of the local SCOTSMAN Distributor or
service agency.
June 1996
Page 13
CUBE SIZE DIAGRAM
CAMS
ADJUSTMENT
OF THE TIMER