Transport, Installation And Dismantling; Wiring - EBARA DL Operating And Maintenance Instructions Manual

7.2. MOTOR SPECIFICATIONS
Motors on these pumps cannot be controlled by an inverter.
Frequency and voltage fluctuations are admitted for which
the sum of the relevant absolute value, with a maximum
EN
±10% for voltage and ±1% for frequency, is equal to 10,
Electrical data
Overheating
protection
- Motor protection
- Heat probe
Nr. starts per hour
- ≤ 7.5 kW
- >7.5 kW
Voltage tolerance
- ≤ 2.2 kW
- >2.2 kW

8. TRANSPORT, INSTALLATION AND DISMANTLING

On handling and installation work of the pump,
assure safety by confirming the mass and the
shape of the pump referring to the appearance
this instruction manual, drawing, the catalogue,
and other materials.
The handling and installation work of the pump
shall be done only by a qualified technician in
accordance with the applicable legal standards.
8.1. TRANSPORT
According to weight and/or dimensions, the motor-driven
pump is packaged in a cardboard box or wooden crate.
In both cases, transport does not require any special
instructions.
In any case, check the total weight printed on the box.
8.2. HANDLING
Before handling pumps, make sure they are
disconnected from power supplies.
Handle pumps using the lifting handle.
NEVER lift by the electrical cords.
According to their weight, pumps may be handled manually
or with special equipment. Always use the lifting handle.
8.3. INSTALLATION
Never execute the operation of the pump and
the mounting work of parts in a lifted position.
Do not damage, break, machine, forcefully
bend, stretch, or twist the power cable, bind the
power cable into a bundle, or place a heavy
load on the power cable.
Using a mega ohm meter, measure the insulation resistance
10
DL, DL W/C DML(V) DS
See Nameplate
≤7.5 kW ≤2.2 kW All
>7.5 kW >2.2 kW /
10 10 10
6 7 /
±10% / ±10%
/ -10+6% /
/ ±10% /
between the earth wire and the phases with the motor and
cable (excluding the electrical power connection section)
submerged in water. If insulation resistance in the respective
sections is under 20MΩ, have the pump checked. When
measuring, keep the electrical power connection section
far from the earth.
DVS
When installing the pump, follow the instructions below:
- the pump should run in a vertical position resting on
a solid point;
- the pump should be positioned in a point in the tank
least subject to turbulence;
All
- pipes should be supported and aligned so that they
/
do not strain the pump and do not suffer the effects
of any liquid flow in the tank;
- prevent air pockets from forming in pipes;
10
- we recommend you mount a check and gate valve
/
on the delivery pipe in that order;
- do not use too many bends (goosenecks) and valves
in the system;
±10%
- manual type pumps do not include an automatic
/
level control system using built-in floats. To prevent
/
dry operation, install an automatic triggering system
as shown in Fig. 14.2.1 - page 140.
We suggest you start the pump when the water level
exceeds the motor cover (H2 Fig. 14.2.1 - page 140)
and stop it when it reaches the motor flange (H1 Fig.
14.2.1 - page 140);
- when electrodes are used for the automatic triggering
system, any impurities and oil could cause pump
operations at levels other than those desired;
- a pump with a lowering device must be installed as
described in the manual.

9. WIRING

The motor-driven pump must be powered by
the electrical panel that includes a switch, fuse
and circuit breaker calibrated to the motor-
driven pump's absorbed current.
The power mains must have an efficient earthing
system according to the electrical standards
in force in your country: this is the installer's
responsibility.
To prevent potential shock in the event of faults,
install a circuit breaker to be exclusively used
for the pump.
Do not connect the yellow-green wire to the
power mains: it should only be connected to
the earthing system.
Never submerge the end of the wire or any
wire couplings in water.
Execute correct wiring work by a qualified
technician conforming to the applicable legal
standards.
This submersible pump must be equipped with
a main disconnect device in accordance with
requirements of appropriate legal standard
(EN60204-1, clause 5.3.2). A suitable rating
over current protective device also needs to
be provided in the final installation.