Stubbe SHB 100-200, Оригинальное руководство по эксплуатации

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Troubleshooting
Fault number
1 2 3 4 5 6 7 8
Cause Remedy
X X
– – –
X
– –
Intake / suction pipe contains trapped air Install fi tting for venting.
Adjust piping installation.
X X
–
X
–
X
– –
Air is sucked in
Seal source of problem.
X Air is being drawn in through the shaft
feedthrough. Replace the seals.
Re-tighten outer mechanical seal.
X X
–
X
–
X
– –
Proportion of gas too high: pump is
cavitating Consult with the manufacturer.
–
X
–
X
–
X
– –
Temperature of fl uid is too high: pump is
cavitating
Increase pump inlet pressure.
Lower temperature.
Contact the manufacturer.
–
X
–
X
– – –
X Viscosity or speci fi c gravity of the pumped
liquid outside the range speci fi ed for the
pump
Consult the manufacturer.
– –
X
–
X
– – –
Viscosity lower than expected Machine the impeller down. Consult
manufacturer and modify impeller
diameter.
X X Viscosity higher than expected Dilute or preheat pumped fl uid.
X X
–
X
– – – –
Geodetic differential head and/or pipe fl ow
resistances too high
Remove sediments from the pump
and/or pressure pipe.
Make sure the pipe cross-section is
larger.
Fit a larger impeller
Fit a larger pump.
Consult the manufacturer.
–
X
– –
X X
– –
Pressure-side fi tting not opened wide
enough
Open the pressure-side fi tting.
X X
– –
X X
– –
Pressure pipe blocked Clean the pressure pipe.
X X
–
X
–
X
– –
Pump running in the wrong direction Change over any two phases in the
motor.
X X
–
X
– – – –
Motor speed too low Compare the required motor speed with
the speci
fi cations on the pump type
plate. Replace the motor if necessary.
Increase the motor speed if speed
control is available.
–
X
–
X
–
X
– –
Pump parts worn Replace the worn pump parts.
– –
X X
–
X
–
X Pressure-side fi tting opened too wide Throttle down the fl ow rate at the
pressure-side fi tting. Observe the
minimum fl ow rate.
Machine the impeller down. Consult the
manufacturer and adjust the impeller
diameter.
– –
X
– –
X
–
X Geodetic differential head, pipe fl ow
resistances and/or other resistances lower
than speci
fi ed
Throttle down the fl ow rate at the
pressure-side fi tting. Observe the
minimum fl ow rate.
Machine the impeller down. Consult the
manufacturer and adjust the impeller
diameter.
300 486 BA-2015.12.16 EN SHB 29