VERDER VERDERFLEX Dura 80 Operating Manual page 30

Possible cause
Incorrect lubricant
Low lubricant level
X - - -
Product ambient temperature too high
Over shimming of the pump
Blocked suction / bad suction characteristics / no
X X - -
product
X - X - High pump speed
Suction / discharge valve closed
Hose failure
Poor pump selection, incorrect shoe shimming
Suction line too long
- X - -
Pump speed too high
Suction line bore too small
High product viscosity
Suction / discharge lines not secured properly
Original instructions (en)
Solution
Consult the manufacturer to obtain correct
X
lubricant.
Add required amount
X
Consult the manufacturer regarding
X
maximum temperature
Check for and remove excess shims
X
Check pipework and valves for blockages.
X
Check that the suction pipework is as short
X
and as large in diameter as feasible
Correct the piping layout
X
Consult the manufacturer
X
Reduce speed to a minimum
X
Consult the manufacturer
X
Open suction / discharge valve
X
Replace hose (g 8.6 Hose change)
X
Consult the manufacturer to check pump
X
selection
Consult the manufacturer
X
Consult the manufacturer
X
Consult the manufacturer
X
Consult the manufacturer
X
Check and secure suction / discharge lines
X
Version 00
© Verder Liquids B.V
Dura 80 - Operating manual
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