GEA ECOVENT N ECO Series, Operating Instructions Manual

Page: 43 / 106

8 Cleaning
This chapter contains information about cleaning the valve. It also contains information
about cleaning intervals and the use of cleaning agents.
It is addressed to all persons who carry out actions related to the cleaning the valve.
INFO
During all cleaning work, observe chapter
2 Safety
of this Operating In-
structions.
8.1 General points
All parts in contact with product must be cleaned at regular intervals. Always observe
the safety data sheets issued by the cleaning agent manufacturers. Only use cleaning
agents which do not cause damage to the seals and the inner parts of the valve. When
the pipe is cleaned, the cleaning medium also flows through and cleans the valve hous-
ings.
With respect to the cleaning method and parameters like detergents, temperatures,
times, and intervals, the component manufacturer can merely make recommendations
but cannot provide any generally applicable details. Method and parameters should be
determined and defined by the operator in accordance with the relevant process and
product.
The cleaning effect must be checked regularly by the operating company!
8.1.1 Cleaning process examples
Typical cleaning parameters in dairy operations
Example of a two-phase cleaning process:
● Sodium hydroxide solution and sodium hydroxide based combination products in
concentrations from 0.5% to 2.5% at 75 °C (167 °F) to 80 °C (176 °F)
●
Phosphoric or nitric acid, and combination products based thereon in the concentra-
tions of 0.3 % to 1.5% at approx. 65 °C (149 °F).
Example of a cleaning operation in one cleaning step:
● Formic acid and formic acid-based combination products at up to 85 °C (185 °F).
Typical cleaning parameters in breweries
Example of a two-phase cleaning process:
●
Sodium hydroxide solution and sodium hydroxide based combination products in
concentrations of 1% to 4% at about 85 °C (185 °F).
● Phosphoric or nitric acid, and combination products based thereon in the concentra-
tions of 0.3 to 1.5% at 20 °C (68 °F).
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