Richter MNK Series, Инструкция по установке и эксплуатации

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Series MNK pedestal group 4
Page
5
9230-003-en Revision 19
TM 10458 Edition 06/2022
2 Notes on safety
This operating manual contains fundamental
information which is to be observed during installation,
operation and maintenance.
It must be read before installation and commissioning!
This operating manual must always be available at the
place of use of the machine/plant.
In addition to the general notes on safety under the
main heading “Safety”, special notes on safety are in-
cluded at other points and must be observed.
Installation, operation and maintenance are to be per-
formed by qualified staff.
The area of responsibility, authority and supervision of
the staff must be exactly regulated by the customer.
If the staff does not have the necessary expertise, they
are to be trained and instructed.
If necessary, this can be provided by the manufac-
turer/supplier on behalf of the machine operator.
General hazard symbol! People may be
put at risk.
Safety symbol! The pump and its function
may be put at risk if this safety symbol is
not observed.
EU marking! Explosion-protected equip-
ment must be identified for work in poten-
tially explosive areas.
Warning of a magnetic field!
Warning of electric power!
This warning sign must be used if people
with a pacemaker are at risk, e.g. from a
strong magnetic field.
It is imperative to observe signs attached directly to the
pump / unit, e.g.:
♦
Direction of rotation arrow
♦
Warning against dry-running
and they are to be kept legible.
Non-observance of the notes on safety may result
in the loss of any and all claims for damages.
Non-observance may involve the following hazards :
♦
Failure of important functions of the machine/plant.
♦
Failure of electronic equipment and measuring in-
struments due to magnetic fields.
♦
Risk to people and their personal property from
magnetic fields.
♦
Risk to people from electric, mechanical and chem-
ical effects.
♦
Risks to the environment through leaks of hazard-
ous substances.
If the unit is used in potentially
explosive areas, special attention is to
be paid to the sections identified with
“Ex” in this operating manual.
2.1 Intended use
Richter pumps of the series MNK 200-150-315 is a
plastic-lined magnetic drive centrifugal pump for the
leak-free conveyance of aggressive, toxic, pure and in-
flammable liquids.
The pump is equipped with a permanent magnetic syn-
chronous drive.
The pump is intended for horizontal installation.
The observance of the specified physical
limits is important for perfect functioning
and safe operation, especially with regard
to explosion protection to prevent potential
sources of ignition (see
Section 2.6 ):
♦
It must be ensured that the pump is always filled
with liquid during operation.
♦
For safe pump operation, we recommend a flow rate
which lies between 0.3 and 1.1 Q
opt
. The maximum
operating temperature must never be exceeded.
See
Section 2.6.7.
In case of doubt, you must con-
sult the manufacturer.
♦
The manufacturer must be consulted in the event of
entrainment of gas >2% as well as solids in order to
avoid a lack of lubrication and dry-running.
♦
The plant NPSH value (NPSHA) should be 0.5 m
higher than the NPSH value of the pump (NPSHR).
See also
Section 5.4.1.
Inadmissible modes of operation, even for
brief periods, may result in serious dam-
age to the unit.
For examples, see installation and operating manual
SCK, Section 6.6.
Furthermore, reference is made in this connection to
the Directive
1999/92/EC (“ATEX 137”)
which contains
the minimum regulations for improving the occupa-
tional health and safety of the workers who may be at
risk from an explosive atmosphere.
This unit must not be operated above the
values specified in the data sheet as re-
gards the fluid to be conveyed, flow rate,
speed, density, delivery head and operat-
ing temperature as well as the motor rat-
ing.
Observe the instructions contained in the
operating manual or contractual documentation; if
necessary, consult the manufacturer.
All important features are documented in the data sheet
included in the scope of delivery.
In the event of operating conditions other than those
described in the data sheet, the following are to be
checked again: