Chapter 8
Rev. 1 of 14/01/97
SEITAL S.r.l.
Use and maintenance handbook: Centrifugal separator
SE 40CX
Page 8-7
8.5. Ordinary maintenance
To guarantee the machine functionality and long-life, the operator must perform cleaning and
ordinary maintenance.
Ordinary maintenance
Before every shift
Check that shields are undamaged
Check hydraulic, electric and pneumatic connections
Oil level check
Brake disconnection check
Operating water pressure control
Compressed air pressure value
Operating machine
General operation check
Control of capacity value and temperature
Control of separation efficiency and regulation by manual valves
Check alarms presence on terminal board
At the end of every shift
Machine chemical cleaning to remove working residuals.
8.6. Separator chemical cleaning
The separator must be chemically cleaned to maintain a high efficiency level and to assure the
hygiene of parts in contact with the product.
The treated product affect the cleaning cycle frequency, that however must be performed at
the end of every working cycle.
The bowl can be cleaned with a solution of caustic soda and/or of nitric acid.
ATTENTION
Generic danger
Cleaning solutions must NOT contain CHLORINE
The frequency of
cleaning cycle with caustic soda
depends on the characteristics of treated
product. The following operations are recommended:
- Rinse the bowl with cold water for about 5
10 min.
- Fill with 2% solution of caustic soda heated up to 75
90 °C for about 30 minutes (for an
efficient cleaning the solution temperature must never fall below 75°C).
- Rinse the bowl with cold water for about 5
10 min.
If there are a lot of limestone deposits, it’s necessary to make a
nitric acid cleaning cycle
. In
this case proceed as follows:
- Rinse the bowl with cold water for about 5
10 min.
