6.3 Trouble shooting
TROUBLES
A - The pump does not deliver
CAUSE
CORRECTION
- Pumping level is to high
- Reduce the pumping level
- Weared-off lobes
- Change the lobes
- Clogged suction filter
- Clean the filter
B - Unstable delivery and vibrations of the pump
CAUSE
CORRECTION
- Air infiltration in the suchtion line
- Check the suction line
- Clogged suction filter
- Clean the filter
- To high r.p.m. of the pump
- Check the r.p.m. and keep them at prescribed values
- To high pressure on the outlet side
- Reduce the pressure losses by reducing the r.p.m.
- To narrow suction line
- Keep the line diameter at prescribed dimension
- Viscosity or density of pumped media is to high
- Reduce r.p.m.
C - Overheating of the pump
CAUSE
CORRECTION
- To high pressure on the outlet side
- Reduce the pressure losses by reducing the r.p.m.
- To high r.p.m. of the pump
- Check the r.p.m. and keep them at prescribed values
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