Bredel Hose pump Series Manual page 45

Problem
Vibration of the pump
and pipework.
Short hose life.
Possible cause
Suction and discharge
lines are not secured cor-
rectly.
High pump speed with long
suction and discharge lines
or high relative density or a
combination of these fac-
tors.
Too narrow diameter of
suction and/or discharge
line.
Chemical attack of the
hose.
High pump speed.
High discharge pressures.
The hose life is reduced
significantly when the hose
has to suffer high working
pressures. The higher the
working pressure, the more
the hose life is reduced.
High product temperature.
High pulsations.
TROUBLESHOOTING
Correction
Check and secure pipe-
work.
Reduce pump speed.
Reduce the line lengths on
both suction and dis-
charge where possible.
Consult your Bredel repre-
sentative for a recommen-
dation.
Increase the diameter of
the suction/discharge lines.
Check the compatibility of
the hose material with the
product to be pumped.
Consult your Bredel repre-
sentative for correct hose
selection.
Reduce pump speed.
The maximum working
pressure depends on the
hose type. Refer to 11.1.1.
Check that the discharge
line is not blocked, the
shut-off valves are fully
opened and the pressure
relief valve functions prop-
erly (if present in the dis-
charge line).
Consult your Bredel repre-
sentative for correct hose
selection.
Restructure the discharge
and inlet conditions.
45