General Information - Espa Multi Gebrauchsanweisung

Contents
Safety precautions .................................................. 10

1. General information ........................................... 11

2. Handling ............................................................. 11
3. Installation ......................................................... 11
3.1. Fixing ........................................................ 11
3.2. Suction pipe assembly ............................. 11
3.3. Discharge pipe assembly ......................... 11
3.4. Electrical connection ................................ 12
3.5. Pre-start checks ....................................... 12
4. Starting .............................................................. 12
5. Maintenance ...................................................... 12
6. Disposing of the product .................................... 12
7. Nameplate ......................................................... 12
8. Possible faults, causes and solutions ................ 13
9. Technical data ................................................... 13
10. List of main components .................................... 44
11. Wiring diagrams ................................................. 45
12. Illustrations......................................................... 46
Safety precautions
This symbol
following words "Danger" or "Warning" indicates the
risk level deriving from failure to observe the
prescribed safety precautions:
DANGER Warns that failure to observe
the pre cautions involves a risk
risk of
of electric shock.
electric
shock
DANGER Warns that failure to observe
the pre cautions involves a risk
of damage to persons and/or
things.
WARNING Warns that failure to observe
the pre cautions involves the
risk of damaging the pump
and/or the facility
1. GENERAL INFORMATION
Please observe the following instructions to achieve
the best pump performance possible and a trouble
free installation.
Read these instructions before installing the
pump.
Save them for future reference.
These are vertical multistage centrifugal pumps
having more than one impeller assembled in-line.
The same flow passes through each impeller but
the pressure increases each time, i.e. more
impellers, more pressure.
These pumps are designed to operate with clean
water, free from particles in suspension and with a
maximum temperature of 40 ºC.
Correct pump operation is assured providing
the instructions on electrical connection,
installation and use are strictly adhered to.
Failure to adhere to the instructions can
result in premature failure of the pump and
voiding of the warranty.
together with one of the
Minimum efficiency index
With the application of the European Regulation
547/2012, the minimum efficiency index after
01/01/2015 must be MEI ≥ 0.40.
The reference value for the most efficient hydraulic
pumps is rated at MEI ≥ 0.70.
The performance curves and efficiency charac-
teristics can be checked on the technical cata-
logues and on www.espa.com.
The operation of this hydraulic pump with variable
operating points can be cheaper and more efficient
when controlled with, for example, a speed regula-
tion control that adjusts the pump's operation to the
system performance.
The efficiency reference criteria can be found on
the following link:
http://global.espa.com/doc-descarrega-1/fingerprints.pdf
2. HANDLING
The pumps are supplied suitably packaged to pre-
vent damage in transit. Before unpacking, check
that the packaging has not been damaged or de-
formed,
Lift and handle the product with care and with
the right tools.
3. INSTALLATION
These pumps are designed for indoor use.
Make sure that pump is never submerged and that
it rests in a dry and well aired room.
3.1. Fixing
The pump should be installed on a solid, horizontal
base, secured by screws or bolts and using the
existing holes in the mount.
3.2. Suction pipe assembly
The suction pipe, if longer than 7 meters, must be
of the same or greater diameter than the pump inlet
and installed in an upward inclination to prevent
trapped air pockets forming.
If the pump is required to perform a suction lift, to
avoid unnecessary losses of head on the discharge
side, the pump should be installed as close as
possible to the water.
The end of the suction pipe must always remain at
least 30 cm below the water level. (Fig.3)
3.3. Discharge pipe assembly
It is recommended to use pipes with a diameter
equal or greater than the pump outlet. This will
reduce loss of head caused by friction in longer
pipe runs.
Pipework must be supported and their weight must
not rest on the pump.
If a foot valve has not been installed it is recom-
mended to fit a check valve to prevent accidental
draining down of the system.
11
EN