INSTRUCTION AND SERVICE PARTS MANUAL - FREEZER CS 800, s/n F0176-00 - ALFRED & CO
N9
SPECIAL CLEANING INSTRUCTIONS
DANGER ! !
Scraper blades can be very sharp and cause severe injury if not handled
properly: use protective gloves.
• The scraper blades are made from high quality hardened stainless steel.
Certain condition may cause small spots to develop. If unchecked, these
spots enlarge, resulting in serious corrosion and pitting.
• At the first indication of these spots, treat the blades as follows:
- Remove blades from the dasher and immerse them in a solution of
20% nitric acid, 2% potassium or sodium dichromate, and 78% water.
DANGER ! !
The special cleaning solution could cause severe injury to personnel if
contacted. The hazard is especially severe for eyes and skin: use
protective clothing including eye protection.
- An immersion time of 30 minutes at 43°C is raccomended.
- Rinse blades thoroughly in clear water and dry.
- If necessary, clean daily after a day's run until all colored spots have
disappeared (it is important to remove all colored spots).
CAUTION ! !
Never allow the cleaning solution to come in contact with the nickel inner
cylinder.
11.4. COMPRESSED AIR SYSTEM
Quality of air supply
Quality of air supply shall be dry and clean in order to assure correct operation
of components.
Condensed water particularly causes bad operation of mass air flow controller.
Pressure reducer
Regularly discharge condensed water (each production cycle) by opening the
screw plug in the bottom of the water collecting bowl.
In case of a remarcable quantity of water regularly present, it is necessary to
lower the moisture in the free air.
Air injection valve
(See assy drawing in the “Spare parts” section)
Disassemble and hand wash after each production operation. In case of
irregular operation, replace the rubber valve and the spring.
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