Technical information

12/01/02
Flaker Safety’s
Mechanical failures in an auger style ice machine can be
time consuming and expensive repairs. Hoshizaki has in-
corporated several safety’s in our Flaker and DCM units
which add protection against this type of failure.
The following safety’s are included in all Hoshizaki F and
DCM units:
1. Low water safety: Designed to protect against dry
operation or possible freeze up in the evaporator due to
low water flow. This safety utilizes the dual float switch
and a 90 second timer to shut down the unit when water
flow is interrupted. The unit will automatically restart when
water flow is resumed.
2. Protect relay safety: This safety incorporates a relay in
the gear motor circuit and will not allow the refrigeration
system to operate unless the gear motor is running. If the
gear motor fails during normal operation, the protect relay
shuts down the compressor to protect against evaporator
freeze-up.
3. Gear motor circuit safety’s: The gear motor has 2
additional safety’s which will operate if the gear motor is
subjected to excessive load or improper voltage. A current
type manual reset safety or slow blow fuse is located in
the control box and will trip when the gear motor amperage
exceeds normal amp draw. This acts as a primary safety
for the gear motor. A secondary internal thermal overload
and off of the housing. Holding the evaporator up, re-tighten
the belly band. This will hold the evaporator up so that you
can remove the housing.
(8) Remove the bolts that secure the housing to the gear
motor assembly and remove the brass housing. The me-
chanical seal ceramic disk and boot are pressed into the
top of the housing. Remove these parts before you ex-
change the bearings. The extruding head and brass hous-
ing will be exchanged for a repressed set at your local
distributor. When you replace the new parts, reverse the
order above. Use a light coat of food grade lubricant around
the bottom of the evaporator and on the o-ring portion of
the housing to the seal o-ring and help keep it in place as
you lower the evaporator. Inspect the mechanical seal thor-
oughly and reuse it, if it is in good shape.
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12/20/03
2/20/03