Filter
Top Products
F00633 Page 15
LUBRICATION:
LIQUID END of pump requires no lubrication. Wear
rings, packing rings, and models using a mechanical
shaft seal, are lubricated by the liquid being pumped. Do
not run dry!
BEARING FRAME - add approximately 2 ounces of a
lithium-based NGLI No. 2 extra pressure ball bearing
grease to each bearing during quarterly inspection.
NOTE: Excess grease will cause bearings to run hot.
The following are factory approved brands of grease for
use with Berkeley Pumps: Alvania EP2, Shell Oil;
Mobilith AW2, Mobil Oil, Ronex MP, Exxon, Litholine
EP2, Atlantic Richfield; and Amolith EP2, Amoco.
ELECTRIC MOTOR: Refer to motor manufacturer’s
operating manual for complete instruction.
GAS/DIESEL ENGINE: Refer to engine manufacturer’s
operating manual for complete instruction.
PERFORMANCE CHECK:
Periodically check the output of the pump. If perform-
ance 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.
Bearings will run hotter for a brief run-in period after
packing which is normal. However, 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.
STUFFING BOX: After a short period of operation,
verify that the stuffing box area and gland are not hot.
If heating is detected, loosen the gland nuts evenly
until water is just running out of stuffing box in a
DROPLET form (approximately 40-60 drops per
minute). Water must not be streaming or spraying out.
Verify cool operation periodically. Adjust gland nuts
EVENLY as necessary for lubrication and cooling of
the packing. If packing has been tightened to the limit
of the packing gland travel, additional packing is
necessary.
PUMPS WITH PACKING: Starting new pump.
Before starting pump for the first time, loosen gland nuts
and retighten finger tight. Proceed with pump start-up
procedure. Allow packing to leak liberally for a few
moments. Then tighten gland nuts one complete turn
each until leakage is reduced to 40 to 60 drops per
minute.
REPACKING:
Refer to illustration on Page 16.
PUMPS WITH 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. Consult factory for proper replacement
procedure.
SHAFT:
Bearing frame shaft assemblies should be periodically
torn down for inspection of worn parts, cleaning and re-
greasing. Most importantly, to check shaft sleeve and
bearings for pitting. Replace worn components as
necessary.
General Information
Maintenance