Watson-Marlow Bredel 265 - Manual (Page 38)

OPERATION
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Genuine Hose Lubricant is harmless (FDA approved),
but it will result in additional downtime since the pump
needs to be cleaned prior to new hose installation.
These consequences can be avoided by preventive
hose replacement. The moment for preventive
maintenance depends on the particular application and
use of the hose. The end-user needs to find out the
moment for preventive maintenance.
7.5 Fluid leakage
The Bredel pump series uses lubricated shoes to
compress the hose. This means the pumphead must be
filled with a sufficient amount of lubricant during
operation. This lubricant is contained in the pump
housing by the cover on the front side and by a dynamic
seal on the back side. The gearbox is also filled with
lubricant.
Seal damage can occur due to normal wear in time, but
is seriously accelerated if the seal gets in contact with
contaminated fluid (during hose failure). Thorough
cleaning of the pump housing after a hose failure is
strongly advised.
WARNING
Exceptions to this general rule are when
the pumped product is either a strong oxi-
dizer or a strong acid. These products
should be avoided as they can cause
unwanted chemical reactions with the
Bredel Genuine Hose Lubricant and a
hazardous situation may arise. In such
cases an alternative lubricant should be
used. Contact your Bredel representative
for more details.