6
4
Priming
The pump must be fully primed
before start up, fill the casing with
liquid and rotate shaft by hand in
order to remove any trapped air in
the impeller.
Install a foot valve in the suction side
and fill with liquid through the upper
part. Remove the male plug locate on
the superior part of the casing until
liquid comes out, then seal the male
plug.
IMPORTANT! - Do not
operate the pump without
being
fully
primed.
4
Rotation
Rotation
is
indicated
by
the
directional arrow marked on the
pump casing. If motor is operated in
three phase, it is very important that
motor shaft rotation match the
direction as the directional arrow on
casing.
Energize
the
motor
momentarily and check for the
correct shaft rotation. Do not let the
pump operate against the directional
arrow.
4
Starting the Pump
Start the pump with the discharge
valve 90% close. Gradually open the
discharge valve until motor is at
operating speed. Never allow the
amperage consumed by the pump
exceeds the maximum allowed by
the engine.
4
Mechanical Seal
The mechanical seal installed in BVL
models are water lubricated, do not
run the pump unless properly filled
with water. Different kind of seals are
used of a distinctive operational use
and liquid being pumped, consult
your Barmesa Pumps distributor for
more information.
Operation & Maintenance
IMPORTANT! - Always de-
energize the motor and lose
the discharge valve before
4
Repair, Maintenance & Service
any repair, maintenance or service
perform on the pump.
4
Remove the Mechanical Seal
The BVL model futures an external
mechanical seal which facilitates the
mechanical seal replacement without
the need to remove the pump or
motor, saving time and money.
Ÿ
Begin by disconnecting power to
the motor and locked and seal
the power supply so the motor
doesn't not accidentally start.
Close the suction and discharge
valve and drain the remaining
liquid by removing the plug,
once all the liquid is drained
reinstall the plug.
Ÿ
Remove the coupling guard to
gain access to the mechanical
seal.
Ÿ
Using the “Allen” wrench loosen
and remove the coupling bolts
from the split coupling. Separate
the coupling house gently in
order to avoid damage in the
coupling. Remove the second
half of the coupling and note
that the pump shaft will drop
down as you do this.
Ÿ
Remove both the motor shaft
key and pump shaft key. Do not
remove the motor shaft collar,
this will help you on the coupling
reinstallation.
Ÿ
Place a wrench on the hole in the
pump shaft to keep it from
rotating and continue to remove
the cap screw, lock washer and
collar from the pump shaft. There
you will find a minimum distance
of 35 mm (1-3/8”) between the
pump shaft and motor shaft.
Ÿ
Inspect shaft in order to find any
bump or damage part, correct if
necessary.
Ÿ
Remove the mechanical seal
rotating assembly by sliding it up
the pump shaft and slipping it
through the gap between shafts.
Ÿ
Remove the connector and
cooling
seal
flush
piping
connected in the seal plate.
Remove the 4 screws and lock
washers that hold the seal plate
and remove the mechanical seal
stationary part with its gaskets
4
Replace the Mechanical Seal
Be precautious while handling the
mechanical seal and avoid any
damage or scratches on the seal
faces. Do not touch the seal faces as
this may affect the mechanical seal
performance.
Ÿ
Replace the stationary seal with
the large gasket down and make
sure the seal flush hole is
position towards the flush line
connection.
Ÿ
Install the seal plate on the pump
with the seal flush hole aligned
to the seal flush hole on the
stationary seal.
Ÿ
Place the seal plate bolts and
washers, make sure to hand
tighten evenly.
Ÿ
Carefully, in a diagonal pattern,
tighten each bolt evenly giving
them a few turns.
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