Emery Thompson CB-100, Operating Manual

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Section 5: CARE and MAINTENANCE
Your model CB100 requires very little in the way of care and
maintenance. There are some functions of the machine that bear
paying attention to.
1) Airflow - your machine uses airflow from its surroundings to
extract heat from each batch of product you make. So it goes to
reason that good airflow is imperative to the efficient operation of
the unit. After about 100 batches (depending on the environment
the machine is used in) take a good look at the left side of the
machine, where air is drawn in. Look past the square perforations
in the stainless steel cabinet, and check the surface of the
condensing coil assembly. It should be clean and free of dust, lint,
etc. that may in time accumulate on its surface. A strong vacuum
cleaner with a soft brush can be used to loosen and pull out any
accumulations.
2) Blade condition - the scraping blade is made of food-grade high
density polyethylene. Eventually, the surface that touches the
freezing tub will wear down. When you notice a change in the
amount of product being left on the inside surfaces of the freezing
tub, it will be time to change the blade. You should be able to see
the gray/silver of the tub after each swipe around of the blade.
There will always be a film of product on the surface of the tub,
but if you can longer see through it to notice the color of the
stainless steel beneath it, then change the blade. A hex key is
included with the machine that fits the 3 screws that secure the new
blade into the dasher shaft. Simply remove the screws, and push
the old blade out sideways. When sliding the new blade in place,
note that there is a top and bottom. The bottom of the blade has a
very slight taper near where it rides along the bearing disc (see
photo 5-1) Be sure to insert it the correct way into the dasher
shaft. Line up the holes in the blade with the holes in the dasher