Mechanical seals are available in a variety of material combina-
tions.
Information about any special seals that apply to your Börger
machine can be found in the additional documentation in the
appendix.
3.1.6
Intermediate chamber (quench)
NOTICE!
Risk of damage to the gear unit when the intermediate
chamber is closed tightly!
When the vent hole is closed tightly or has become blocked,
emerging medium from the working chamber cannot escape
through the intermediate chamber and will penetrate the gear unit
if the mechanical seal is defective. This could damage the gear
unit.
— The safety opening in the intermediate chamber is used for
monitoring the integrity of the mechanical seal, and may not
be closed.
—
Overflowing of the intermediate chamber indicates a seal
malfunction.
The pump chamber and gear chamber are separated by an inter-
mediate chamber filled with quench fluid as standard.
The heat-absorbing quench fluid prevents the mechanical seals
from running dry and captures any medium that enters the inter-
mediate chamber due to leaks in a mechanical seal. This quench
function also prevents the gear unit from being damaged by intru-
sion of the medium.
The contact area between the shaft and rotors is also lubricated
with quench fluid, thus preventing corrosion.
T
o compensate an increase in pressure at rising temperatures, the
intermediate chamber features a breather at the side with a vent
hole (1, at the side on standing versions, see
Ä
Chapter 3.1.7
“Designs, mounting positions” on page 42). The vent hole on the
intermediate chamber can be positioned in a visible location via an
extension pipe for special applications, e.g. on submerged
devices.
Fig. 2: Example: Classic FL series
Product Description
BA-Classic FL_en-US, 03.05.2018 www.boerger.de / www.boerger.com 41
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