Troubleshooting
Dura 5 - 35
4.0v-06.2013
24 | Page
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Possible Cause
Remedy
X
-
-
-
Incorrect lubricant
Consult the manufacturer to obtain correct
lubricant.
Low lubricant level
Add required amount.
Product ambient temperature too high
Consult the manufacturer regarding maximum
temperature.
Over shimming of the pump
Check for and remove excess shims.
X
X
-
-
Blocked suction / bad suction characteristics / no
product
Check pipe-work and valves for blockages.
Check that the suction pipe-work is as short
and as large in diameter as feasible.
Correct the piping layout.
Consult the manufacturer.
X
-
X
-
High pump speed
Reduce speed to a minimum.
Consult the manufacturer.
-
X
-
-
Suction/discharge valve closed
Open suction/discharge valve.
Hose failure
Replace hose(
→ 7.4 Hose change)
Poor pump selection, incorrect shoe shimming
Consult the manufacturer to check pump
selection.
Suction line too long
Consult the manufacturer.
Pump speed too high
Consult the manufacturer.
Suction line bore too small
Consult the manufacturer.
High product viscosity
Consult the manufacturer.
Suction/discharge lines not secured properly
Check and secure suction/discharge lines.
-
-
X
-
Long suction/discharge lines / Damper malfunction
Shorten long suction/discharge lines wherever
possible.
Consult the manufacturer.
High product specific gravity / viscosity
Consult the manufacturer.
Under-sized suction/discharge diameter
Increase
suction/discharge pipe-work
diameter.
Fit damper.
Insufficient lubricant in the casing
Check lubrication chart and add the required
amount of lubrication.
-
-
-
X
Inlet pressure too high
Reduce the inlet pressure.
Blocked hose / incorrectly fitted
Check the hose and remove any blockages.
Large particles in the product
Mount sieve or filter in suction line to avoid very
large particles from entering the hose.
Do not allow filters to limit suction below
accepted levels.
Tab. 9
Pump troubleshooting list
Summary of Contents for Dura 10
Page 28: ...Dura 5 35 4 0v 06 2013 28 Page...
