2 hose compression force adjustment (shimming), 3 lubrication and cooling, 5 gearbox – Watson-Marlow DuCoNite 25 User Manual
Page 19
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
(shimming)
In order to achieve optimal life of the pump hose, the
compression force of the pump hose can be adjusted by
placing a number of shims under the pressing shoes.
The shims (A) are fitted between the rotor (B) and the
pressing shoe (C). The number of shims will vary for
each counterpressure situation.
describes how to select and install
the shims.
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 §
for the
required quantity and NSF registration.
4.5
Gearbox
The hose pump types described in this manual use co-
axial gearbox units.
The gearboxes are fitted with a foot rest. The outgoing
shaft has been fitted with a spline.
Consult your Bredel representative for
lubrication recommendations when operat-
ing the hose pump below 2 rpm.