Function Danfoss BFP41
drawn from the suction connection
The gear wheel then pumps oil to the
pressure side and the oil is put under
pressure.
The pressure is controlled and kept
constant at the set value by the
regulating valve (P
1
The regulating valve (P
1
the oil quantity supplied by the gear set
The oil quantity utilized is determined
by the set pressure on the regulating
valve (P
1
in the nozzle line.
The valve (P
1
way:
been reached, the passage to the
return side opens.
- The diaphragm and the spring
keep the pump pressure constant
at set value.
- If the pump is overloaded, i.e. if
you try to get out more
oil than the gear set can supply
under existing circum-stances, the
oil pressure falls below the set value
and the valve closes against the
position.
This can be remedied by:
- Reducing the pump pressure.
- Reducing the oil quantity supplied
by using a smaller nozzle.
- Using a pump with a larger capacity.
171 505 08 07-01
Burner with preheating
Consider that the oil quantity is
reduced at preheating by 5-20%
depending on.
- Rise in temperature at the nozzle
- Nozzle design
- Capacity (high capacity - small
Mounting/dismounting return plug
from plug
the cover by means of a 4 mm allen
necessary, put a screwdriver between
and replace it by a new one. Press it
on to the plug. Ensure that the
One pipe system Two pipe system
R
S
E
NC
A
G
H
V
P
1
P
D
C
INSTRUCTIONS PUMP TYPE DANFOSS BFP41
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