salmson NEX, Инструкция по установке и эксплуатации

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ENGLISH
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seal leaks
excessively - Shaft bent Check shaft runouts are within acceptable values
Consult Salmson
- Bearings worn Replace bearings
- Leakage under sleeve due to seal failure Replace seal and check for damage
- Shaft sleeve worn or scored or running off center Check and renew defective parts
- Mechanical seal improperly installed Check alignment of faces or damages parts and assembly method used
- Incorrect type of mechanical seal for operating conditions Consult Salmson
- Shaft running off center because of worn bearings or misalignment Check misalignment and correct it if necessary. If alignment satisfactory
check bearing for excessive wear
- Impeller out of balance resulting in vibration Check and consult Salmson
- Abrasive solids in liquid pumped Check and consult Salmson
- Internal misalignment of parts preventing seal ring and seat from mating
properly Check and consult Salmson
- Mechanical seal was run dry Check mechanical seal condition and source o f dry running and repair
- Internal misalignment due to improper repairs causing impeller to rub Check method of assembly, possible damage or state of cleanliness
during assembly.
Remedy or consult Salmson if necessary
Pump
requires
excessive
power
- Speed too high Consult Salmson
- Total head of system lower than pump design head Check system losses and consult Salmson
- Specific gravity of liquid different from design Check and consult Salmson
- Viscosity of liquid differs from that for which designed Check and consult Salmson
- Operating at high capacity Measure the value and check maximum permitted.
Remedy or call Salmson
- Misalignment due to pipe strain Check the flange connections and eliminate strains using elastic
couplings or a method permitted
- Shaft bent Check shaft run outs are within acceptable values
Consult Salmson
- Rotating part rubbing on stationary part internally Check and consult Salmson if necessary
- Wearing ring surfaces worn Replace worn wear ring/surfaces
- Mechanical seal improperly installed Check alignment of faces or damages parts and assembly method used
- Incorrect type of mechanical seal for operating conditions Consult Salmson
- Abrasive solids in liquid pumped Check and consult Salmson
- Wrong direction of rotation Reverse two phases at motor terminal box
- Motor running on two phases only Check power supply and fuses
Pump loses
prime after
starting
- Pump or suction pipe not completely filled with liquid Vent and /or prime
- Suction lift too high or level too low Check NPSH
A
> NPSH
R
, proper submergence, losses at strainers and
fittings
- Excessive amount of air or gas in liquid Check and purge pipes and system
- Air or vapor pocket in suction line Check suction line design for vapor pockets
- Air leaks into suction line Check suction line is air tight
- Air leaks into pump through mechanical seal, sleeve gasket, casing seal or pipe
lugs Check and replace faulty parts
Remedy or consult Salmson
- Inlet of suction pipe insufficiently submerged Check out system design
Insufficient
pressure
developed
- Excessive amount of air or gas in liquid Check and purge pipes and system
- Speed too low Consult Salmson
- Total head of system higher than differential head of pump Check system losses
Remedy or consult Salmson
- Viscosity of liquid differs from that for which designed Check and consult Salmson
- Wearing ring surfaces worn Replace worn wear ring/surfaces
- Impeller damaged or eroded Replace or consult Salmson for improved material selection
- Wrong direction of rotation Reverse two phases at motor terminal box
Insufficient
capacity
delivered
- Pump or suction pipe not completely filled with liquid Vent and /or prime
- Suction lift too high or level too low Check NPSH
A
> NPSH
R
, proper submergence, losses at strainers and
fittings
- Insufficient margin between suction pressure and vapor pressure Check NPSH
A
> NPSH
R
, proper submergence, losses at strainers and
fittings
- Excessive amount of air or gas in liquid Check and purge pipes and system
- Air or vapor pocket in suction line Check suction line design for vapor pockets
- Air leaks into suction line Check suction line is air tight
- Air leaks into pump through mechanical seal, sleeve gasket, casing seal or pipe
lugs Check and replace faulty parts
Remedy or consult Salmson
- Foot valve too small Investigate replacing the foot valve
- Foot valve partially clogged Clean the foot valve
- Inlet of suction pipe insufficiently submerged Check out system design
- Speed too low Consult Salmson
- Total head of system higher than differential head of pump Check system losses
Remedy or consult Salmson
- Viscosity of liquid differs from that for which designed Check and consult Salmson
- Wearing ring surfaces worn Replace worn wear ring/surfaces
- Impeller damaged or eroded Replace or consult Salmson for improved material selection
- Wrong direction of rotation Reverse two phases at motor terminal box
- Motor running on two phases only Check power supply and fuses
- Motor running too slow Check motor terminal box connections and voltage
Pump does
not deliver
liquid
- Pump not primed or filled with liquid Check for complete filling
- Pump or suction pipe not completely filled with liquid Vent and /or prime
- Suction lift too high or level too low Check NPSH
A
> NPSH
R
, proper submergence, losses at strainers and
fittings
- Insufficient margin between suction pressure and vapor pressure Check NPSH
A
> NPSH
R
, proper submergence, losses at strainers and
fittings
- Air or vapor pocket in suction line Check suction line design for vapor pockets
- Inlet of suction pipe insufficiently submerged Check out system design
- Speed too low Consult Salmson
- Total head of system higher than differential head of pump Check system losses
Remedy or consult Salmson