Removal And Replacement - Scotsman SCN60 Installation And Use Manual

SCN60
Service

Removal and Replacement

Component Access
The machine is designed to be cleaned while built
in. See the Maintenance section for more
information.
Most components require the machine to be
removed from a built-in situation:
•
Fan motor – side service panel
•
Controller – top panel
•
Auger motor – top panel, back panel
•
Ice sensor – top panel
•
Drain pump – side service panel
•
Top bearing – top panel
•
Gear reducer – top panel, back panel
•
Ice sweep – top panel
•
Water seal – top panel, back panel, bin back
panel
•
Water reservoir or float - top panel
Evaporator / Auger / Water Seal / Gear Reducer
Service
The auger, top bearing, water seal and gear
reducer can be replaced without disturbing the
refrigeration charge. If the evaporator must be
replaced, then the refrigeration system must be
accessed so the charge can be recovered.
Evaporator construction
The evaporator is made up of a stainless steel
tube, wrapped with a coil of copper and then
heavily insulated. There is no refrigerant path to the
water inside of the evaporator. The inside of the
tube is polished and rifled with12 vertical grooves
that help guide the ice straight up the tube.
It is normal for mineral scale from the water to form
on the inside of the evaporator tube. That scale
must be removed by use of ice machine scale
remover using the process described in
Maintenance. Heavy scale build up will require the
process to be repeated. The inside of the
evaporator tube may be sanded vertically to
remove tough build up. Do NOT hone or clean with
a wire brush on a drill, as horizontal marks on the
inside of the evaporator will restrict the flow of ice.
A damaged evaporator must be replaced.
The auger can also have scale build up which must
be removed. It works best when it is clean and
shiny. Note that a wet auger will appear clean but
when dry the scale will be visible. Dry off the auger
(use your heat gun) to determine if it's clean. If the
machine has been operated with worn bearings,
the auger may have rubbed the evaporator wall. If
the spiral edges or flights of the auger are
damaged, the auger must be replaced.
The ice breaker at the top of the evaporator
contains the pressed-in bearing. This bearing must
not be greased. If worn, the breaker with bearing
can be replaced.
The gear reducer is a sealed unit. The only service
part available for it is the drive motor and drive
motor capacitor.
Lubricants and Sealants
Food grade lubricant is useful in repair of this
model. Scotsman part number 19-0569-01.
Food grade sealant is needed in repair of this
model. Scotsman part number
May 2011
Page 13
.
19-0529-01