Watson-Marlow Bredel 265 - Manual (Page 74)

TROUBLESHOOTING
74
Hose pulled into
the pump. Insufficient or no hose
lubricant in the pumphead. Add extra lubricant. See § 8.4 .
Incorrect lubricant: no
Bredel Genuine Hose
Lubricant in the pumphead. Consult the Bredel representative
for the correct lubricant.
Extremely high inlet pres-
sure - larger than 300 kPa
(43.5 psi). Reduce the inlet pressure.
Lubricant leak-
age at flange
bracket. Hose blocked by an incom-
pressible object in the
hose. The hose cannot be
compressed and will be
pulled into the pump hous-
ing. Remove hose, check for block-
ages and replace if necessary.
Bolts of flange bracket
loose. Tighten to the specified torque set-
tings. See §
11.1.6 .
Bolts of hose clamps loose. Tighten to the specified torque set-
tings. See § 11.1.6 .
Leakage from the
rear of the pump
housing "Buffer
zone". Damaged wear or sealing
ring. Replace wear or sealing ring.
Motor functions,
but rotor does
not. Broken undercut on the
pump shaft. Follow installation procedure sup-
plied with replacement shaft.
Check process conditions to pre-
vent recurrence of overload.
Problem Possible cause Correction