Starting
When starting for the first time your
equipment check that the discharge
valve is 90% closed. Gradually open
the valve until the motor runs at full
load (amperage plate). Never allow
the amperage consumed by the
pump exceeds the maximum
permitted by the engine.
Mechanical Seal -
To inspect or
replace the shaft seal, remove the
body and impeller. If any part shows
wear or damage, replace both parts
(stationary seat and rotary part). The
rotating seal parts may be stuck
together with the shaft, this happens
when the seal has been assembled
for a long time.
If the mechanical seal does not leak
and there is need to open the pump
for inspection or cleaning,
DO NOT
remove the seal, remove the spring
only if the impeller needs to be
removed. Once a seal has been in
operation is very difficult to remove
and reassembly without creating a
seal leak.
IMPORTANT!
-
Always
unplug the pump before
applying
maintenance,
service or repair to avoid
electric shock.
Handle seal parts with
extreme care. DO NOT
damage lapped surfaces.
08
Operation & Maintenance
Mechanical seal
Mechanical seals installed in this
pumps are lubricated by water,
therefore the pump should not be
operated dry. You will find the
appropriate seal for each use and
liquid to be pumped, check with your
Barmesa Pumps distributor for more
information.
Stuffing box*
If the pump has graphite packing
(stuffing box) consider the following:
Ÿ
When the pump is placed into
operation, the liquid will drip from
the stuffing box; if this does not
happen, loosen the nuts on the
stuffing box until dripping occurs.
Ÿ
Once the pump has operated for a
reasonable period and the
dripping has not decreased to “a
few drops per minute", it is
necessary to tighten the nuts
stuffing box. If tightening the nuts
the required drip is not achieved,
the graphite packing rings must be
replaced.
Ÿ
After a few minutes of operation,
gradually tighten the nuts until the
dripping decreases but not cease.
Frame*
All pumps come with factory
lubricated bearings. It is very
important to have oil in the oil tank.
(Use oil DTE26). Change the oil every
1,000 hours of operation, considering
a daily operation of 8 hours.
It is important not to overfill the oil
tank because it would cause an
increase in pressure by heating,
affecting the bearings and seals. In
normal
operation,
the
frame
temperature increases 122 °F above
ambient temperature.
*For Barmesa pumps with universal
transmission.
Flexible coupling*
All pumps operated through flexible
coupling or by pulleys and belts must
be perfectly aligned to ensure
smooth operation. In no case
problems
occur
with
flexible
couplings if the pump-motor
alignment is correct. All pumps are
manufactured
following
this
condition.
Maintenance
Body and Impeller -
All pump parts
are removable by removing nuts and
bolts. For body maintenance,
disconnect
the
suction
and
discharge, and remove the body of
the intermediate coupling. For
maintenance of the impeller is not
necessary to remove the suction or
discharge, simply remove the body
nuts; this would uncover the impeller.
Examine and replace if it shows wear
or damage.
When
the
impeller
requires
replacement, remove the screw of
the shaft, and using a puller, remove
the impeller being careful not to
abuse the keyway of the shaft.
Disassembly
Mechanical Seal -
Perform the steps
above. Remove the rotating part. It
may be necessary to remove the
intermediate link to remove the
stationary seat. To do this, remove the
nuts and washers that attach the
coupling to the motor. When
removing the coupling, the steady
part will move towards the front seat
of the shaft and the sleeve. If the seat
does not yield itself, push from the
rear of the coupling.
Reassembly
Mechanical Seal -
Identify all parts of
Figures 7 and 8. The ring (6) and seat
(1) are perfectly polished, so care
must be taken not to scratch or
smudge. The cleaning during the
assembly process is very important.
IMPORTANT! - All parts
must be clean before
reassembly.
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