Troubleshooting And Fault Elimination - ProMinent Duodos 20 PPS Assembly And Operating Instructions Manual

Troubleshooting and fault elimination

8 Troubleshooting and fault elimination
The pump is not working.
Cause:
The outlet valve on the discharge side is not
open.
No air supply.
The air pressure is too low.
Air is escaping from the connecting elements.
The air lines or additional equipment are
blocked with foreign bodies.
The outlet opening (silencer) of the pump is
blocked with foreign bodies.
The liquid line is blocked with foreign bodies.
The pump is blocked with foreign bodies.
The pump is working but no liquid is being pumped.
Cause:
The valve on the suction side is not open.
Too high a suction or discharge lift.
The outlet opening of the liquid line (including
the filter) is blocked with foreign bodies.
The pump is blocked.
The ball and the ball seat are worn or damaged. Check the components and replace if necessary.
20
User qualification, troubleshooting and fault elimination: trained
n
Ä Chapter 2.2 'User qualification'
qualified personnel
on page 8 .
Recommended measure:
Open the discharge valve on the discharge side.
Switch on the compressor and open the air valve and the
air regulator.
Check the compressor and the configuration of the air
line.
Check the connecting elements and the torque of the
screws.
Check and clean the air line and the auxiliary equipment.
Check and clean the outlet opening and the silencer.
Check and clean the liquid line.
Remove, check and clean the pump housing.
Recommended measure:
Open the valve on the suction side.
Check the configuration of the installation and reduce the
height of the installation.
Check and clean the liquid line.
Dismantle the pump, then check and clean the pump.