Watson-Marlow Bredel 265 - Manual (Page 68)

TROUBLESHOOTING
68
Low capacity /
pressure. Shut-off valve in the suc-
tion line (partly) closed. Fully open the shut-off valve.
Under shimming of the
pressing shoes. Consult the diagram in § 11.1.7 . Fit
the correct number of shims.
Hose rupture or badly worn
hose. Replace hose. Refer to § 8.6 .
(Partial) blockage of the
suction line or too little
product on the suction
side. Ensure that the suction line is clear
of blockages and that sufficient
product is available.
Connections and hose
clamps not correctly
mounted, which makes the
pump suck air. Tighten connections and hose
clamps.
The filling degree of the
pump hose is too low,
because the speed is too
high in relation to the vis-
cosity of the product to be
pumped and the inlet pres-
sure.
The suction line can be too
long or too narrow or a
combination of these fac-
tors. Consult your Bredel representative
for a recommendation.
Problem Possible cause Correction