TECH - SPEC'S Technician's Pocket Guide - Hoshizaki America, Inc.

CHECKOUT:
To check the operation of this control follow the same check
out procedure as with the mechanical control. Instead of
moving a paddle, you will place your hand within 1/2~1
inch of the sensor end. With the control switch in ICE, you
should hear the bin control relay switch when you move
your hand away from the sensor end and back again.
Check the resistance supplied at the Red K4 connector as
you move your hand back and forth at the sensor end.
Unplug the harness and use an ohmmeter to check the
resistance. As the sensor switches, the resistance value
will change as follows:
a) When your hand is away from the sensor end, the
resistance at the K4 connector will be 5.6 K ohms. This is
the bin empty signal.
b) When your hand is within 1/2~1 inch of the sensor, the
resistance at the K4 connector will be 15.5 K ohms. This is
the bin full signal.
If the relay does not switch or the resistance does not
change, check the control wiring, relay operation, and the
control power supply for 115 VAC input / 24 VAC output.
Note: Remember that dip switch # 7 must be ON and the
control will have these safeties.
4 Beeps = Short circuit on K5 bin control circuit.
5 Beeps = Open circuit on K5 bin control circuit.
F/DCM BIN CONTROL:
DCM bin controls may be a mechanical flapper with a magnetic
proximity switch or a micro-switch assembly. Since
these controls have moving parts, make sure that all parts
move freely. Sticking can occur if scale builds up at the
pivot points. All flakers except the F-450MAF-C use the
mechanical/proximity switch control. If the bin control fails,
the spout will fill with ice causing higher gear motor current
and the gear motor protect fuse will blow.
The F-450MAF-C has an infrared eye bin control. A separate
power supply provides 24 VDC to the infrared eye.
This power supply is mounted in a separate control box
along with the bin control relay. The IR sensor is mounted
on the outside of the chute base in a molded indentation.
Two mounting holes mount the sensor to the chute base.
46
12/01/02 12/20/03
2/20/03