Watson-Marlow Bredel 265 - Manual (Page 71)

TROUBLESHOOTING
71
High pump tem-
perature. Non standard hose lubri-
cant used. Consult the Bredel representative
for the correct lubricant.
Low lubricant level. Add Bredel Genuine Hose Lubri-
cant. For the required amount of
lubricant see §
11.1.4 .
Product temperature too
high. Consult the Bredel representative
about the maximum temperature
range of the product.
Internal friction on the hose
caused by blocked or poor
suction characteristics. Check pipework/valves for block-
ages. Ensure that the suction pipe-
work is as short as possible and
that the diameter is large enough.
Over-shimming of the
pump rotor shoes. Consult the diagram. See § 11.1.7 .
Remove excess shims.
High pump speed. Reduce pump speed to a mini-
mum. Consult with your Bredel
pump representative for advice on
optimum pump speeds.
Problem Possible cause Correction