Scotsman B 21 WS Manuel De Service page 21

Page 10
50-65-90
1. On 50-65-90 slowly rotate the clock knob
clockwise with the aid of a screwdriver until the
microswitch actuator arm is at the start position of
the freezing cycle.
Immediately set the master switch to the ON
position. Leave the compressor switch in the
OFF position.
2. Allow the system to operate for about 20
minutes into the freezing cycle. No ice will be
produced because the compressor is not in
operation.
3. At the end of this period set the master
switch to the OFF position to shut off the icemaker.
4. Remove the overflow drain tube from its
seat to drain out all the cleaning solution and
most of the mineral concentration through the
drain tube and then replace it in its seat.
5. Pour onto the evaporator cavity two or three
liters of clean potable water to rinse the mold
cups and the platen.
6. If necessary remove the water spray platen
to clean it separately.
7. Set again the master switch in ON position.
The water pump is again in operation to circulate
the water in order to rinse the entire water
system.
8. Pour on the upper side of the evaporator
platen fresh water with a capfull of disinfectant
solution then put again the master switch in ON
position so to sanitize all the water system for
approx. 10 minutes.
NOTE. Do not mix descaling with
disinfectant solution to avoid the generation
of a very aggressive acid.
9. Flush out the disinfectant solution from
the sump reservoir.
Slowly rotate the time clock knob clockwise
until the microswitch actuator arm is in the
START position of the harvest cycle and then
set the master switch to the ON position. Let
the unit run normally through this part of the
cycle. When the defrost has been completed
rotate the time clock knob manually until the
defrost cycle starts again. Do this two times.
Once the water reservoir is properly filled up,
set the compressor switch to the ON position.
The unit is now ready to resume the normal
operation.
10. Place again the evaporator cover and the
unit service panels.
11. Place again the evaporator cover and the
unit service panels.
12. At completion of the freezing and harvest
cycle make sure of proper texture and clearness
of the ice cubes and that, they do not have any
acid taste.
ATTENTION. In case the ice cubes are
cloudy-white and have an acid taste, melt
them immediately by pouring on them
some warm water. This to prevent that
somebody could use them.
13. Wipe clean and rinse the inner surfaces of
the storage bin.
REMEMBER. To prevent the accumulation
of undesirable bacteria it is necessary to
sanitize the interior of the storage bin with an
anti-algae disinfectant solution every week.