Series MNKA bearing pedestal assembly 4
Page 13
9250-003-en
Revision 01
TM 10458
Published 06/2022
5.8 Coupling
If one coupling half engages with the other, the
claw part must normally be mounted on the drive
shaft and the coupling half with the smooth face
on the motor shaft.
Observe the operating instructions of the coupling
manufacturer.
When used in zone 1 and 2, a coupling with valid
ATEX approval must be used.
There are regulations in place, for example, for the
following details:
♦
Arrangement of the coupling halves
♦
Maximum bore diameter
♦
Maximum transmittable power
♦
Clearance between the coupling halves
♦
Maximum values for misalignment and
♦
angular deviation.
5.9 Final inspection
Check the alignment of the coupling again
according to section 5.3
.
It must be possible to turn the unit easily by hand
at the coupling.
5.10 Coupling guard
According to accident prevention regulations, the
pump may only be operated with a coupling guard.
It must be ensured that the coupling
guard used is either made of
non-sparking material or fulfills the im-
pact resistance test required by EN
13463 without impairment.
Richter offers both variants.
The operator must ensure that the re-
quirements
of
the
Machinery
Directive are met after installation of
the coupling guard.
5.11 Electrical connection
The operator is obliged to connect the unit in
accordance with existing regulations (IEC, VDE,
etc.).
The electrical connection may only be
carried out by a qualified electrician.
Compare the existing mains voltage with the spec-
ifications on the motor type plate and select a suit-
able circuit.
A motor protection device (motor circuit breaker)
is strongly recommended.
There is a risk of explosion if the elec-
trical installation is not carried out cor-
rectly.
In potentially explosive atmospheres,
IEC 60079-14 must also be observed
for the electrical installation.
If the pump is mounted on a base plate, ensure
that an electrical discharge is provided by using a
toothed or contact washer on the housing bracket
and support bracket.
The unit must be grounded in accordance with the
applicable regulations, e.g. at the base plate.
