Scotsman CMS1402 Service Manual page 9

INITIAL START UP
12. After an ice harvest check Cube Size.
There is just enough water available in the
reservoir to make one full sized batch of cubes.
The water pump may pick up some air at the end
of the freezing cycle, so at the end of freeze some
bubbles in the pump discharge hose is normal. If
the water pump stops pumping 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 on the
front of the control box. Rotate the adjustment
screw one eighth of a turn:
Clockwise for SMALLER ice cubes
COUNTER Clockwise for LARGER ice cubes
Observe size of the ice in the next ice cube
harvest and repeat the adjustment until the correct
ice cube size is achieved.
13. Check harvest time. There must be enough
time in the harvest cycle 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
more time for harvest. Do NOT adjust harvest
time too short or the machine will not harvest
all the ice.
The harvest time is set by: loosening the set screw
on the timer cam, rotating the shaft until the
opening between the cams is either increased or
decreased, and retightening the set screw. More of
an opening between the high parts of the two
cams = more harvest time.
An adjustment of the cube size control may be
needed after the harvest time has been changed.
Check cube size again.
14. Check Bin Ice Level Control: With the
icemaker in the harvest cycle, place something
solid directly below the transducer socket (located
in the base to the left of the evaporators). The
machine will then switch off at the END OF THE
HARVEST CYCLE. Within seconds after removal
of the obstruction, the icemaker will restart.
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 some ice in all cells. If not, contact the Factory.
TOO SMALL
ADJUSTMENT OF THE TIMER
The bin level control has two postions: Full and
Partial. Full is about 8" from the bottom of the
transducer socket. Note: The unit will make one
batch of ice when full if switched Off and then On.
15. Wash out the bin with clean, potable water.
16. Replace all covers, panels and screws.
17. Fill out the Warranty Registration and
Customer Evaluation form and send it in. Explain
to the owner/user the significant specifications,
operation, and maintenance requirements of the
ice machine. Inform the owner of the name and
telephone number of the local authorized
SCOTSMAN Distributor, or service agency.
September 1993
Page 9
CMS1402
CUBE SIZE DIAGRAM
CAMS
SET
SCREW