afriso FloCo-Top-1K Manual De Instrucciones página 37

4 Product description
4.1 Function
The burner pump draws the fuel oil from the tank via the filter and the check
valve in the housing and delivers it to the nozzle. The amount of oil exceeding
the nozzle capacity is pumped via the connection piece of the return line into
the float chamber. While the liquid level gradually increases in the float cham-
ber, the oil is de-aerated by the de-aeration valve.
When the oil reaches a level of approximately 20-30 mm above the bottom,
the floats begin to operate and actuate the bypass valve, thus delivering the
de-aerated return oil to the suction pipe. This way, the system only withdraws
the amount of oil from the tank via the filter which is actually needed for com-
bustion. This considerably prolongs the filter service life.
The major part of the volume flow to the tank consists of de-aerated fuel oil
and a small portion of fuel oil from the tank which still contains air.
A
4.2 Approvals, conformities, certifications
The product is TÜV-tested (report number S 133 2013 E2).
Product description
B
C
The product features two separate
float chambers.
The lower float chamber contains the
operating float; the upper float cham-
ber contains the safety float. The
upper float chamber keeps oil foam
from escaping via the vent opening
(for example, during commissioning/
filter replacement) and indicates mal-
functions of the vent valve.
D
A. Q
Tank
B. Q
Return
C. Q
Flow
D. Q
Nozzle
FloCo-Top-1K
= Q
Nozzle
EN
7