DAB KVC 60-30 T [22/108] Installation

DAB KVC 70-30 T [22/108] Installation
ENGLISH
17
8.2 Noise level
See table A, pag. 93.
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.
8.3 Hot and cold parts
DANGER OF BURNING !!
As well as being at high temperature
and high pressure, the fluid in the
system may also be in the form of
steam!
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.
9. INSTALLATION
The pumps may contain small
quantities of residual water from
testing. We advise flushing them
briefly with clean water before their
final installation.
9.1 Pump installation
 The electropump must be fitted in a well ventilated
place and with an environment temperature not
exceeding 40°C.
 Electropumps with degree of protection IP55 may
be installed in dusty and damp environments,
without any specific protection.
 It is always good practice to place the pump as
close as possible to the liquid to be pumped.
 The installation baseplate, provided by the
customer, if they are metallic they have to be
painted rust and corrosion. They have to be flat
and stiff enough to resist to short circuit forces
and avoid resonnance due to vibrations.
 Concrete basements have to be well solid and dry
before installing the pumps.
 A firm anchoring of the feet of the pump assembly
on the base helps absorb any vibrations created
by pump operation.
 The pump may be installed in either horizontal or
vertical position, as long as the motor is always
above the pump.
 Ensure that the metal pipes do not transmit
excess force to the pump apertures, so as to
avoid causing deformations or breakages.
 Use pipes with a suitable thread to avoid damage
to the inserts.
 The internal diameter of the pipes must never be
smaller than that of the apertures of the pump.
 If the head at intake is negative, it is indispensable
to fit a foot valve with suitable characteristics at
intake.
 For suction depths of over four metres or with long
horizontal stretches it is advisable to use an intake
pipe with a diameter larger than that of the intake
aperture of the pump.
 Any passage from a pipe with a small diameter to
one with a larger diameter must be gradual. The
length of the passage cone must be 5 to 7 times the
difference in diameter.
 Check accurately to ensure that the joins in the
intake pipe do not allow air infiltrations.
 To prevent the formation of air pockets, the intake
pipe must slope slightly upwards towards the pump.
Fig. 3
 Interception valves must be fitted upstream and
downstream from the pump so as to avoid having to
drain the system when carrying out pump
maintenance. Do not run the pump with closed
valve on the plant.
 If there is any possibility of the pump operating with
the interception valves closed, provide a by-pass
circuit or a drain leading to a liquid recovery tank.
 To reduce noise to a minimum it is advisable to fit
vibration-damping couplings on the intake and
delivery pipes and between the motor feet and the
foundation.
 If more than one pump is installed, each pump must
have its own intake pipe. The only exception is the
reserve pump (if envisaged).
positive slope towards
the pump for the
suction pipe
non-return valve
secure the pump to the
basement by a solid and strong
installation

Содержание

DAB ENGLISH 8 2 Noise level See table A pag 93 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 8 3 Hot and cold parts DANGER OF BURNING As well as being at high temperature and high pressure the fluid in the system may also be in the form of steam It may be dangerous even to touch the pump or parts of the system A For suction depths of over four metres or with long horizontal stretches it is advisable to use an intake pipe with a diameter larger than that of the intake aperture of the pump Any passage from a pipe with a small diameter to one with a larger diameter must be gradual The length of the passage cone must be 5 to 7 times the difference in diameter Check accurately to ensure that the joins in the intake pipe do not allow air infiltrations To prevent the formation of air pockets the intake pipe must slope slightly upwards towards the pump Fig 3 If the hot or cold parts are a source of danger they must be accurately protected to avoid contact with them positive slope towards the pump for the suction pipe 9 INSTALLATION A WATER TECHNOLOGY The pumps may contain small quantities of residual water from testing We advise flushing them briefly with clean water before their final installation 9 1 Pump installation The electropump must be fitted in a well ventilated place and with an environment temperature not exceeding 40 C Electropumps with degree of protection IP55 may be installed in dusty and damp environments without any specific protection It is always good practice to place the pump as close as possible to the liquid to be pumped The installation baseplate provided by the customer if they are metallic they have to be painted rust and corrosion They have to be flat and stiff enough to resist to short circuit forces and avoid resonnance due to vibrations Concrete basements have to be well solid and dry before installing the pumps A firm anchoring of the feet of the pump assembly on the base helps absorb any vibrations created by pump operation The pump may be installed in either horizontal or vertical position as long as the motor is always above the pump Ensure that the metal pipes do not transmit excess force to the pump apertures so as to avoid causing deformations or breakages Use pipes with a suitable thread to avoid damage to the inserts The internal diameter of the pipes must never be smaller than that of the apertures of the pump If the head at intake is negative it is indispensable to fit a foot valve with suitable characteristics at intake non return valve secure the pump to the basement by a solid and strong installation Interception valves must be fitted upstream and downstream from the pump so as to avoid having to drain the system when carrying out pump maintenance Do not run the pump with closed valve on the plant If there is any possibility of the pump operating with the interception valves closed provide a by pass circuit or a drain leading to a liquid recovery tank To reduce noise to a minimum it is advisable to fit vibration damping couplings on the intake and delivery pipes and between the motor feet and the foundation If more than one pump is installed each pump must have its own intake pipe The only exception is the reserve pump if envisaged 17

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