AU
13
7.4.5 Pump
It is necessary to dismount practically the entire pump in order
to extract the bearings, shaft, etc.
To do this, observe the attached sectional plan.
As a general guide to dismount the equipment, follow these
steps:
For monobloc construction:
- Dismount the installation pump.
- Release the nuts of the casing and extract the cover
support equipment, including the moving parts.
- Pay special attention to the pump casing, since it does
not have stability and must be properly supported.
- Unthread the impeller nut or the impeller itself, and
extract it. The wear plate (when fitted) and seal are
accessible at this moment.
- Extract the mechanical seal (see point 7.4.4)
- Release and extract the pump cover.
- Release the coupling and remove the shaft.
For construction with coupling:
- Remove the coupling guard and then the coupling as
described in point 7.4.2 and point 7.4.3 (when fitted).
- Extract the support - cover, including the moving parts.
The wear plate is accessible at this moment (when fitted).
- Release the impeller nut and extract it.
- Extract the mechanical seal (see point 7.4.4)
- Release and extract the pump cover.
- Remove the shaft deflector (when fitted) and release the
support covers.
- Extract the shaft with the bearings, by hitting the pump
end with a plastic hammer.
Failure of the bearings may cause ignition through
increased heat on the surface of the bearings. This
can be avoided by using officially approved quality bearings,
which are supplied as original spare parts.
Regularly check the correct state of the protector
deflector, and replace in the event of deterioration.
7.5 Assembly
7.5.1 Tubular
coupling
guards
1. Install the distancer cylinder and seal using the
clamps (1)
1
2. Position the side cover (2) leaving the rims (3) in the
upper section
3. Join the side cover (2) with the fastening screws (4)
to the lifting plate (5). The screws should not be fully
tightened at this moment. If there is no lifting plate,
mount the assembly plate and place the screws
through the threaded orifices.
2
3
4
5
4. Without tightening the screws (4) completely, turn the
equipment around the shaft.
5. Adjust
the length of the covers so the shaft and the
attachment are fully covered.
6. Secure the lifting plate (5) to its support (6) using the
corresponding screws (7). If there is no lifting plate,
the locking screws (4) are longer and also fulfil this
function.
4
5
6
7
7. Finish tightening the locking screws (4).
7.5.2 Coupling
1.- Mount the pump (when it has been dismounted) and
tighten the casing - cover attachment nuts.
2.- Couple the pump to the motor, as indicated:
2.1.- COUPLING WITHOUT DISTANCER. Position the
motor in place, introducing the male coupling. Position the
pins, but DO NOT tighten them until alignment is complete.
2.2.- COUPLING WITH DISTANCER. Mount the male
coupling, introducing the teeth in the rubber plugs located
in the female coupling. Mount the intermediate pipe and
secure it using the screws, both to the plate and to the
male coupling.
3.- Align the coupling (see point 5.2 of this manual)
4.- Mount the coupling guard.
