Espa DELTA 1755, Instruction Manual, Page: 8 / 40

8
INSTRUCTION MANUAL (Translation from the original Spanish)
EN
Damage prevention and safety instructions
(See figure 5)
A Warning! Observe limitations of use. I
This apparatus may be used by children older
than 8 and persons with reduced physical,
sensory
or mental capacities, or lacking
experience and knowledge, if they are supervised
or receive adequate training on the safe use of
the apparatus and understand the dangers.
Children should not be allowed to play with the
apparatus.
Children should not perform the ordinary cleaning
and maintenance tasks without supervision.
B
The name plate voltage must be the same as the
mains voltage.
C
Connect the pump to the mains via an omnipolar
switch with at least a 3 mm opening between
contacts.
D
Install a high-sensitivity differential switch (0.03A)
as extra protection against lethal electric shocks.
E Connect the pump to the ground.
F
Use pump only within performance limits indicated
on the name plate.
J
Be careful with hazardous liquids and
environments.
G Remember to prime pump. K
Caution! Look out for accidental leaks.
Do not expose pump to bad weather.
H
Check for motor self-ventilation.
L
Caution! Avoid icing.
Cut out power supply before servicing pump.
Contents
Safety precautions .................................................... 8
1. General information ............................................. 8
2. Handling ............................................................... 9
3. Installation ........................................................... 9
3.1. Fixing .......................................................... 9
3.2. Suction pipe assembly ............................... 9
3.3. Discharge pipe assembly ........................... 9
3.4. Electrical connection .................................. 9
3.5. Pre-start checks ......................................... 9
4. Starting ................................................................ 9
5. Maintenance ...................................................... 10
6. Nameplate ......................................................... 10
7. Possible faults, causes and solutions ................ 10
8. Technical data ................................................... 10
9. List of main components .................................... 34
10. Wiring diagrams ................................................. 35
11. Illustrations......................................................... 35
Safety precautions
This symbol together with one of the
following words “Danger” or “Warning” indicates the
risk level deriving from failure to observe the
prescribed safety precautions:
DANGER
risk of
electric
shock
Warns that failure to observe
the pre cautions involves a risk
of 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 centrifugal horizontal electropumps, with
self-priming capacity and supplied with Ventury
system.
The DELTA 1755 models are 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.
All models are manufactured to include a
recirculation system with automatic valve achieving
suction lifts of up to nine meters. By using a foot
valve on the suction pipe the pump will rapidly self-
prime when operated.
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.