Industrial scale ice machines Evaporator Service ... - Scotsman

Service Manual
At the base of the machine is the water reservoir in
which the stainless steel pump is immersed. Water is
pumped to the distributor from which it falls by gravity;
there is a filter (2) and shut-off valve (1) on the toroidal
distributor which is positioned internally and integral
with the central shaft.
Depending upon the application, there are two different
types of distributor:
a) Peralluman pipe with regular perforations and
supply from above (land version)
b) Stainless steel ring pipe with regular perforations and supply from the axis of the
gear reducer (on board version)
1
3
4
2
In the LAND version, a level sensor (3) allows a check to be carried out on the water
flow. The upper part of the cylinder is rounded at the end in order to channel the water
towards the walls of the cylinder.
In the reservoir there is a float valve which regulates the flow of water from the external
feed circuit in such a way that the level remains constant. The ice has to be dry and subcooled,
for this the surface of the evaporator cylinder which is immediately in front of the
scraper roller is not irrigated by the water distribution apparatus.
b. ICE OUTLET
The stainless steel shaft, positioned in the centre of the cylinder, is turned on its vertical
axis by a gear reducer. Connected onto the shaft are two ‘V’ arms onto which the icebreaker
is fixed on one side and the scraping roller on the other. This collects and cleans
the surface of ice. The ice-breaker, turning on its
own axis and rotating over the ice formed on the
inside, detaches it by breaking it (see photo).
A deflector prevents the ice from falling into the water reservoir.
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Rev. 07/2006