Maintenance; Replacing The Electric Motor; Replacing The Mechanical Seal - HYDROO VDROO Serie Manual De Instrucciones De Instalación Y Operación

8. MAINTENANCE

ATTENTION:
If a pump has been used for toxic or harmful liquids, it should be labeled
as contaminated.
DANGER:
Before starting any maintenance procedures on the pump, make sure
that all power connections are off and that it cannot be energized
accidentally.
DANGER:
· Maintenance and service must be exclusively carried out by trained and
qualified personnel.
· Follow all safety regulations in force.
· Use suitable personal protection equipment.
Pumps fitted with 7.5 KW or greater power motors shall preferably be repaired on site.
Make sure the necessary lifting equipment is available.
Mechanical sealed surfaces are lubricated by the pumped liquid, which means that
there may be a certain amount of leakage from the mechanical seals.
When the pump is started up for the first time, or when a new mechanical seal
is installed, a certain run in time is required before the leakage is reduced to an
acceptable level. The time required for this depends on the operating conditions, i.e.
every time the operating conditions change, a new run-in period will be started.
Under normal conditions, leaking liquid should progressively reduce to zero. As a result,
no leakage should be detected.
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8.1. Maintenance
The pump does not require any scheduled maintenance routine. If the user wishes to
schedule regular maintenance deadlines, they will depend on the type of pumped liquid
and on the pump operating conditions.
Contact your nearest distributor or an authorized support service if you have any
questions regarding maintenance or servicing..
8.2. Replacing the electrical motor
The procedure to couple the electrical motor to the pump is described below:
1. Remove the metallic coupling guards.
2. Loosen the coupling bolts. Make sure the pump shaft is firmly secured by the shaft
seal and rotates without friction.
3. Put the motor into place and tighten the bolts that hold the motor into place.
4. Hold the mechanical coupling in position so that there is the same gap on all the
sides (motor and hydraulic part).
5. Place the coupling guards and tighten them to the pump head.

8.3. Replacing the mechanical seal

VDROO 1-20 process:
1. Remove the metallic coupling guards.
2. Untighten the bolts that hold the mechanical coupling.
3. Untighten the bolts that hold the motor in place and remove it.
4. Untighten the six screws that hold the seal into place (three on the shaft and three
on the top support). Extract the mechanic seal.
5. To install the new mechanic seal, insert it in the same position as the previous one
by the upper end of the shaft.
6. Insert the three screws that hold the seal to the hydraulic pump head.
7. Make sure the pump shaft is in the correct position: The hydraulic package
(impellers and shaft assembly) must be placed in the central position of its axial
play.
8. Tighten the screws that hold the mechanical seal of the pump shaft while the shaft
stays in the same position as described above.
NOTE: Check that the shaft turns freely without friction once the screws have been tightened in their
places. Otherwise, repeat steps 7 and 8.
9. Put the motor into position and tighten the screws to secure it.
10.Hold the mechanical coupling in position so that that there is the same gap on all
the sides (motor and hydraulic part).
11. Place the plastic coupling guards and secure it by means of the side screws.
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