Disposal - Grundfos MTS Serie Manual De Instrucciones

Fault number
1 2 3 4 5 6
- X - X X -
- X - X X -
- X - X X -
- X - X X -
- X - X - -
- X - X X X
- - - - X X
- - - - X X
- - - - - X
- - - - X -
- - - - X -
- - - - - -
- - - - - -
- - - - - -

12. Disposal

This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
The crossed-out wheelie bin symbol on
a product means that it must be
disposed of separately from household
waste. When a product marked with this
symbol reaches its end of life, take it to a
collection point designated by the local
waste disposal authorities. The separate collection
and recycling of such products will help protect the
environment and human health.
See also end-of-life information at
www.grundfos.com/product-recycling.
26
Cause
7 8
The inlet pipe cross-section is too
- -
small.
The inlet height is too high:
- - NPSH is larger than
pump
NPSH .
system
The pump is cavitating because the
- - pumped liquid temperature is too
high.
The hydraulic parts of the pump are
- -
dirty, clotted or encrusted.
The viscosity or specific gravity of
- X the pumped liquid is outside the
range specified for the pump.
- - Pump parts are worn.
X X The pump is distorted.
The anti-friction bearing in the pump
- X
is defective.
The anti-friction bearing in motor is
- X
defective.
The outlet-side valve is not opened
- -
wide enough.
- - Coupling parts are worn.
Flange bolts are not tightened
X -
properly.
X - The mechanical shaft seal is worn.
X - The pump housing seal is defective.
Remedy
• Install an inlet pipe with a larger
cross-section.
• Remove any encrustations from
the inlet pipe.
• Open the valve completely.
• Increase the inlet pressure.
• Consult the manufacturer.
• Increase the inlet pressure.
• Lower the pumped liquid
temperature.
• Consult the manufacturer.
• Dismount the pump and clean the
parts.
• Consult the manufacturer.
• Replace the worn pump parts.
• Check the pipe connections at the
pump.
• Replace the anti-friction bearing.
• Replace the anti-friction bearing.
• Open the outlet-side valve
completely.
• Replace the coupling.
• Tighten the flange bolts. See
section 4.1.12 Tightening
• Replace the mechanical shaft
seal.
• Replace the pump housing seal.
torques.