Verderflex Ds500+ - Page 28

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Version 00
© Verder Liquids B.V
Ds500, Ds500+ Operating manual
Original instructions (en)
Problem Cause Solution
Lowow/lowdischargepressure
Excessivebackpressure.
Reduce discharge pressure to within
working parameters.
Increaseexternalpipeworkdiameter.
Blockage in the line. Check for blockage and remove.
Pumpnotcalibratedtospecicapplication. Perform the calibration procedure.
Premature cartridge failure
Excessive back pressure causing
backow.
Reduce discharge pressure to within
working parameters.
Increaseexternalpipeworkdiameter.
Excessive temperature of pumped
medium.
Reduce temperature of medium.
Flow rate inaccurate Pumpnotcalibratedtospecicapplication Perform the calibration procedure.
Excessivenoise
Pulsation due to excessive discharge
pressure.
Reduce discharge pressure to within
working parameters.
Increaseexternalpipeworkdiameter.
Check pipework dimensions. Eliminate
small radius bends.
Pump won’t start
Pump head issue when in 4-20mA or
contact mode (remote control).
Address pump head issue.
Enable alarm output to show fault status.
Table 16. - Troubleshooting