INITIAL START UP
15. 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 longer
harvest cycles. Do NOT adjust harvest time too
short or the unit will not harvest all the cubes.
The harvest time is set by: loosening the set screw
on the timer cam, rotating the shaft to open or
close the distance between the high parts of the
cams, and retightening the set screw. More of an
opening between the high parts of the cam = more
harvest time.
Detailed instructions are on the next page.
An adjustment of the cube size control may be
needed after the harvest time has been changed,
so check the cube size again.
16. Check ICE BIN LEVEL CONTROL
The amount of ice maintained in the bin is
adjustable. The normal setting is “full”. The level of
ice in the bin may be set lower to shut off the
machine when the bin is only partially full. The ice
bin level control is designed for the MDB550 ice
storage bin, use of other bins may result in ice
levels that are more or less than the settings on
the control indicate.
To Test The Ice Level Setting:
1. Open the bin door and locate the ice level
sensor. It’s a socket in the base about 2" in
diameter and located left of the evaporator plates.
2. When the machine is running, wait untIl near the
end of a “harvest” cycle.
3. Hold a flat object about the size of this service
manual over the ice level sensor socket.
4. The unit will turn off at the end of the harvest
cycle.
5. Slowly lower the flat object straight down.
6. The ice machine will start again at the point
where it will maintain the ice level.
17. Replace all panels, covers and screws.
18. Fill out and mail in the Warranty Registration
and Customer Evaluation form.
19. Inform the user of the name and telephone
number of the local service company. Also tell the
user the maintenance requirements of the ice
machine.
TOO
THICK
CORRECT
SIZE
CUBE
TOO
THIN
1
1
⁄
4
"
1
1
⁄
4
"
CUBES (ACTUAL SIZE)
MCM1062W
September 1993
Page 9
