AFRISO 20281, Operating Instructions Manual

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15
Operation EN
Fuel oil filters
7 Operation
7.1 Pressure mode
If the product is used in pressure mode, the product must be used with a
brass filter cup.

In the case of such applications, take appropriate measures to keep the
maximum permissible operating pressure from being exceeded even in
the case of error conditions (defective pressure reducer), for example, by
means of a bypass valve or a pressure switch, etc.

Verify that a collection facility with leak detection is installed below the
burner hoses and the fuel oil filter by means of which leaking oil is
detected and the burner is switched off.
7.2 Air in the filter cup
During operation, air may accumulate in the filter cup. This is caused by small
air bubbles getting from the tank line to the fuel oil filter. The air volume is
independent of the flow rate, the suction height or the existing vacuum. Small
accumulations of air in the filter cup do not influence the operation of the
product.
If the major accumulations of air result in malfunctions because air from the
fuel oil filter gets into the burner line, it is advisable to use a combination of
fuel oil filter and de-aerator (preferably FloCo-Top-1 or FloCo-Top-2).
7.3 Use in flood hazard areas
The product is suitable for use in flood hazard areas; it is watertight up to
10 mH2O (1 bar pressure).
After a flood, the product does not have to be replaced.
NOTICE
INOPERABLE PRODUCT
• Ensure that the single-line filter with return supply (R 500 Si, R 500 St,
R 500 Fi) is replaced after a flood.
Failure to follow these instructions can result in equipment damage.