14 Troubleshooting
14.2 Troubleshooting
Fault identification
Cause
Remedy
1
2
3
4
5
–
–
Cold start when delivering high-viscosity liquids
Install the heating system.
–
–
–
–
–
–
7
Differential pressure is too high and has overloaded the idle screws
Contact the manufacturer.
–
–
–
–
–
–
7
Viscosity is too low and has overloaded the idle screws
Contact the manufacturer.
1
2
3
4
–
–
7
Pump damaged through dry running
Contact the manufacturer.
1
–
–
–
–
–
–
Pump does not vent
Vent the pressure line at the highest point.
1
2
3
–
–
–
–
Reversing valve lever in the incorrect position
Switch the lever of the reversing valve to the correct position
Ä
During opera-
tion, Page 26.
–
2
–
–
5
–
–
Pressure maintaining valve set incorrectly
Set the pressure maintaining valve
Ä
During operation, Page 26.
Tab. 16: Fault table
Operation instructions
OIK 10en-GB Edition 2021-06
35
