Watson-Marlow Bredel 10 - Manual (Page 20)

DESCRIPTION
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When the compression is too low, this will result
in loss of capacity and backflow. Backflow
results in a reduction of the life of the pump
hose.
4.4.2 Hose compression force adjustment
The compression force of the pump hose can be
adjusted by installing a rotor with a different dimension
between the tips of the integral pressing shoes. The
rotor is chosen to achieve an optimal life of the pump
hose for the intended use of the hose pump. If you want
to change the application of your hose pump, contact
your Bredel representative.
4.4.3 Lubrication and cooling
The pumphead, in which the rotor and pump hose can
be found, is filled with Bredel Genuine Hose Lubricant.
This lubricant lubricates the movement between the
hose and the pressing shoes and dissipates the
generated heat via the pump housing and the cover.
The lubricant is food grade. See § 11.1.4 for the
required quantity and NSF registration.
4.5 Gearbox
The hose pump types described in this manual use
helical gearbox units. The gearboxes are fitted with a
flange connection. Refer to §
11.2 for specifications. If
the pump is to be used in potentially explosive
atmospheres, refer to chapter
10 .
Consult your Bredel representative for
lubrication recommendations when operat-
ing the hose pump below 2 rpm.