Installation - EBARA GSD Series Translation Of The Original Instructions

9. INSTALLATION

9.1 PLACE OF INSTALLATION
1. Mount the equipment in an easily accessible place for overhauling
EN and maintenance.
2. Prohibit access to unauthorised persons by using corresponding
locks.
3. Locate the equipment as close as possible to the water supply,
making sure that the height difference between the water surface
and the pump shaft is minimal and the length of the suction pipe is
as short as possible.
4. The sum of the suction height and the pump head must always
be less than the maximum permissible pressure (see chapter 7.
TECHNICAL DATA).
5. Verify that the available NPSH value is greater than the minimum
required by the pump.
9.2 POSITIONING AND FIXING
Remember that the electric pump units must be fixed in a stable and
lasting manner to solid cementation. The cementation must be suf-
ficiently rigid, permanent and aligned, as well as located on ground
capable of withstanding an adequate permissible support load.
If it is necessary to limit, as much as possible, the vibrations of the
equipment through the use of elastic shock absorbers, the latter must
not be placed directly under the metal profiles, but it will be necessary
to produce a solid plate with a weight equal to one and a half times or
twice the overall weight of the group, arranging the shock-proof ele-
ments under the whole that is created between the upper part and
the plate.
ATTENTION!
INCORRECT CEMENTATION IS USUALLY THE
CAUSE OF EARLY FAILURE. DAMAGE OR
BREAKAGE DUE TO INCORRECT POSITIONING
OR FIXING WILL VOID THE WARRANTY PERI-
OD.
As shown in the figure, there may be strong stresses after having se-
cured the pump to the surface. Always check with manual rotation of
the pump that there are no particular strains.
If blocking points are noticed that prevent rotation, arrange for a better
alignment of the fixing plane. Wedges can be used as shown in the
figure.
8
Provide free manoeuvring space around the machine in order to allow
ordinary maintenance and possible repairs.
Provide a free space equal to at least 0.25*d (where d=motor fan
cover diameter) in the rear area of the machine in order to allow air
recirculation and cooling of the motor itself.
ATTENTION!
DO NOT REMOVE OR MODIFY PLATES, WARN-
INGS OR PROTECTIONS PLACED BY THE
MANUFACTURER ON THE MACHINE. DO NOT
PROCEED WITH INSTALLATION IN CASE OF
DEFECTS OR MISSING AND/OR DAMAGED
PARTS.
9.3 MANUAL ROTATION
As shown in the figure, in order to proceed with rotation of the pump
shaft it is necessary to remove one of the side protections. Afterwards
access will be available to the rigid joint.
Use the dedicated grooves to rotate the shaft of the same.
9.4 PIPING
Assembly must be carried out in accordance with the arrangement
shown in the figure:
1. Pump
2. Pipe support
3. Elastic sleeve
4. Non-return valve
5. Shut-off valve
6. Base valve
7. Eccentric reduction
1. Prevent the suction and delivery ducts from transmitting stresses
to the pump by fitting sufficiently resistant supports and brackets.
Failure to perform this operation will result in misalignments and
probable breakages. Provide for correct assembly of the compen-
sator joints to absorb expansion or vibrations.
2. Fit possible non-return valves (between the pump and the delivery
valve) in the following cases:
- In very long ducts.