Protections; Moving Parts; Noise Level; Hot And Cold Parts - DAB PUMPS ALM 200 Instrucciones Para La Instalación Y El Mantenimiento

5.3

Protections

5.3.1

Moving parts

In accordance with accident-prevention regulations, all moving parts (fans, couplings, etc.) must be accurately protected
with special devices (fan covers,ecc.) before operating the pump.
5.3.2

Noise level

The noise levels of pumps with standard supply motors are indicated in table 1 on page 97.
Remember that, in cases where the LpA noise levels exceed 85 Db(A), suitable HEARING PROTECTION must be used
in the place of installation, as required by the regulations in force.
5.3.3

Hot and cold parts

6.

INSTALLATION

6.1
To protect the pump against deposits, it is advisable to install it in the lowest point of the system. Fit the pump in the
plant only after having completed the welding works and checked that the plant is quite clean.
6.2 The electropump must be fitted in a well ventilated place, protected from unfavourable weather conditions and with an
environment temperature not exceeding 40°C. Fig. B
Electropumps with degree of protection IP55 may be installed in dusty and damp environments. If installed in the open,
generally it is not necessary to take any particular steps to protect them against unfavourable weather conditions.
6.3
The pump may be fitted either on the delivery or on the return pipe, with the motor axis in horizontal or vertical position,
as long as the terminal board box is never facing downwards (FIG.C) so as to avoid dangerous water infiltrations in the
case of leaks For ALM – ALP pumps the motor axis must only be horizontal.
6.4
To facilitate checking and replacement operations, install the pump in a position with easy access.
6.5 The arrows on the pump body indicate the direction of flow. It is recommended to use interception gate valves on the
intake and delivery pipes, to prevent drainage of the system when it is to be repaired. Fit also a by-pass circuit between
delivery and intake to guarantee minimum recycling if electrovalves are used in the pipes, so as to avoid the creation of
dangerous temperature rises.
6.6
Ensure that the plant is provided with an air bleeding system and that the expansion chamber (if provided) is installed
before the intake aperture. If the pump is installed on the delivery of an open vessel circuit, ensure that the safety pipe
is connected before the pump.
6.7
When fitting the pump on the system, ensure that the metal pipes do not weigh down on the pump body, transmitting
excess forces or stress that could cause cracks or breakages
6.8 To avoid transmitting noise and vibrations, fit vibration-damping couplings on the intake and delivery apertures.
7.

ELECTRICAL CONNECTION

Caution! Always follow the safety regulations.
7.1 The requirements of the electric energy supply company must be scrupulously complied with.
In the case of three-phase motors with star-delta start, ensure that the switch-over time from star to delta is as short as
possible and that it falls within table 2 on page 97.
7.2 Before opening the terminal board and working on the pump, ensure that the power has been switched off
7.3
Check the mains voltage before making any connection. If it is the same as the voltage on the data plate, proceed to
connect the wires to the terminal board, giving priority to the earth lead. (Fig. D).
7.4
The pumps must always be connected to an external switch.
5 1 2
During pump operation, keep well away from the moving parts (shaft, fan, etc.) unless it is absolutely
necessary, and only then wearing suitable clothing as required by law, to avoid being caught.
As well as being at high temperature and high pressure, the fluid in the system may also be in
the form of steam!
DANGER OF BURNING!
It may be dangerous even to touch the pump or parts of the system.
If the hot or cold parts are a source of danger, they must be accurately protected to avoid contact with
them.
Scrupulously follow the wiring diagrams inside the terminal board box and those on page 3 of
this manual.
ENGLISH
3 4
16
(Filter for intake pipe)
1)
Filter body
2)
Narrow mesh filter
3)
Differential pressure gauge
4)
Perforated sheet
5)
Pump intake aperture