Mechanical Shaft Seal - Pentair BERKELEY Manual Del Usuario

Maintenance • Mechanical Shaft Seal
LUBRICATION:
LIQUID END of pump requires no lubrication.
Mechanical shaft seal is lubricated by the liquid being
pumped. Do not run dry!
MOTOR bearings are lubricated at the factory.
Re-lubrication at intervals consistent with the amount
of use will provide maximum bearing life. Refer to motor
Instruction Manual for proper motor lubrication and
maintenance instructions.
PERFORMANCE CHECk:
Periodically check the output of the pump. If
performance is noticeably reduced, refer to
Troubleshooting Chart.
OBSERVATIONAL MAINTENANCE:
When the pump and system operation have been
stabilized, verify that pump unit is operating properly.
Observe the following:
VIBRATION: All rotating machines can be expected to
produce some vibration, however, excessive vibration
can reduce the life of the unit. If the vibration seems
excessive, discontinue operation, determine cause of
the excessive vibration, and correct.
NOISE: When the unit is operating under load, listen
closely for unusual sounds that might indicate that the
unit is in distress. Determine the cause and correct.
OPERATING TEMPERATURE: During operation, heat
is dissipated from the pump and the driver. After a
short period of time, the surface of the pump bracket
will be quite warm (as high as 150°F), which is normal.
If the surface temperature of the pump bracket or
driver is excessive, discontinue operation, determine
cause of the excessive temperature rise, and correct.
Worn bearings will cause excessive temperatures and
need to be replaced. The pump unit is cooled by the
water flowing through it, and will normally be at the
temperature of the water being pumped.
MECHANICAL SEAL:
Adjustment or maintenance is normally not required.
The seal is enclosed within the pump and is self
adjusting. Seal is cooled and lubricated by the liquid
being pumped. Refer to Pages 20 and 21 for removal
and replacement. Do not run dry!
PUMP PROTECTION-
COLD WEATHER/
WET WEATHER INSTALLATIONS:
SYSTEM DRAINS: Provide drain valves to empty
system, including pump case, to prevent freezing
damage.
SHELTER: If possible, provide shelter for unit to protect
from weather. Allow adequate space around pump unit
for service. When effectively sheltered, a small amount
of heat will keep temperature above freezing. Provide
adequate ventilation for unit when running. For severe
weather problems, where other shelter is not practical, a
totally enclosed fan-cooled enclosure can be considered
for electric motors.
CONDENSATION: When the temperature of metal parts
is below dew point and the surrounding air is moist,
water will condense on the metal surfaces and can
cause corrosion damage. In severe situations, a space
heater can be considered to warm the unit.
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