Protections; Moving Parts; Noise Level; Hot And Cold Parts - DAB KDN 32-125.1 Anleitungen Für Installation Und Wartung

6.6.

Protections

6.6.1.

Moving parts

In accordance with accident-prevention regulations, all moving parts (fans, couplings, etc.) must be accurately
protected with special devices (fan covers, coupling covers) before operating the pump.
6.6.2.

Noise level

The noise levels of pumps with standard supply motors are indicated in table 6.6.2 on page 118. 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.
6.6.3.

Hot and cold parts

Any leaks of dangerous or harmful liquids (for example, from the shaft seal) must be conveyed and disposed of in
6.6.4.
accordance with the regulations in force so as not to cause a risk or damage to persons and to the environment.
7.

INSTALLATION

The electropump must be fitted in a well ventilated place, with an environment temperature not exceeding 40°C.
As they have degree of protection IP55, the electropumps 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.
If the unit is installed in a location where there is a risk of explosion, the local regulations on "Ex" protection must
be respected, using only suitable motors.
7.1. Foundation
The buyer is fully responsible for preparing the foundation which must be made in conformity with the
dimensions shown on page 119-123 / 124-130. Metal foundations must be painted to avoid corrosion; they must
be level and sufficiently rigid to withstand any stress. Their dimensions must be calculated to avoid the
occurrence of vibrations due to resonance.
With concrete foundations, care must be taken to ensure that the concrete has set firmly and is completely dry
before placing the unit on it. The surface that it sits on must be perfectly flat and horizontal. After the pump has
been positioned on the foundation, check with a spirit level to ensure that it is sitting perfectly level. If not,
suitable shims must be inserted between the base and the foundation in the immediate vicinity of the anchoring
bolts. For bases on which the distance between the anchoring bolts is >800 mm, shims must also be inserted in
the centre point to avoid bending. A firm anchoring of the feet of the pump/motor assembly on the base helps
absorb any vibrations created by pump operation. All the anchoring bolts must be tightened fully and uniformly.
7.2. Pump/motor alignment
After having proceeded as described in the previous paragraph, to guarantee correct and lasting
operation of the unit, you must scrupulously check the alignment of the motor shaft and the pump
shaft, even in the case of electropumps already assembled on the base and complete with motor.
The unit is correctly aligned when a ruler placed axially across the two semi-couplings (fig. 7.2.1)
measures a constant distance (+/-0.1mm) between the ruler and the shaft (motor-h1 or pump-h2) on
the whole circumference of the semi-couplings. You must also check, with a caliper or a thickness
gauge, that the distance between the semi-coupling and the spacer coupling is constant (+/-0.1mm)
on the whole circumference (s1 = s2).
If correction is necessary due to radial or angular shifting, align by fitting/remiving discs under the
feel of the pump housing or the motor
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.
h2
ENGLISH
h1
s1
s2
(fig.7.2.1)
27
90°