Disposal Of Used Parts - ProMinent DULCOflex DFDa Operating Instructions Manual

Maintenance, repair, troubleshooting, disposal and spare parts
Problem
Short service life of the hose
Pump hose pulled into the pump
housing
The pump does not start up

6.4 Disposal of Used Parts

42
Possible cause
Insufficient nominal width of the
pipes
Pump base plate loose
Pulsation dampers insufficient or
missing
Exposure to chemicals
High pump speed
High pump temperature
High operating pressure
Pump cavitation
High inlet pressure (> 3 bar)
Pump hose filled with deposits
Bearing flange insufficiently tight‐
ened
Insufficient motor performance
Insufficient output from frequency
converter
Blockage in the pump
User qualification: instructed user, see
n
qualifications' on page 5
NOTICE!
Regulations governing the disposal of used parts
– Note the current national regulations and legal
standards which apply in your country
The manufacturer will take back decontaminated used units pro‐
viding they are covered by adequate postage.
Decontaminate the unit before returning it for repair. To do so,
remove all traces of hazardous substances. Refer to the Material
Safety Data Sheet for your feed chemical.
A current Declaration of Decontamination is available to download
on the ProMinent website.
Solution
Increase nominal width
Fasten base plate
Install pulsation dampers on suc‐
tion and/or discharge side.
Check the compatibility of the
hose with the liquid being
pumped, the cleaning fluid and the
lubricant
Reduce pump speed
Reduce product temperature
Reduce operating pressure
Check the suction conditions
Reduce inlet pressure
Clean or replace the pump hose
Tighten bolts
Check motor and replace if neces‐
sary
The frequency converter must
match the motor
Check voltage. Start only happens
at a minimum of 10 Hz
Check if the suction or discharge
side is blocked. Eliminate
blockage
Ä Chapter 1.2 'Users'