Richter MNKA Series (ASME) - Manual (Page 13)

Series MNKA, acc. to ASME Page 13
9250-050-en Revision 11
TM 7903 Edition 07/2010
5.8 Coupling
If one coupling half engages with the other, the claw
section is normally to be mounted on the pump shaft
and the coupling half with the smooth end face on the
motor shaft.
Observe the operating manual of the coupling
manufacturer.
A coupling with a valid ATEX certificate is to
be used if deployed in zone 1 and 2.
Regulations exist, e.g. for the following details:
Arrangement of the coupling halves
Max. bore diameter
Max. transmitted power
Spacing of the coupling halves
Maximum values for offset and angular
misalignment.
Shall the pump housing (casing) and motor remain on
the base plate for repair work, a spacer type coupling
is required.
5.9 Final check
Check the alignment of the coupling again in
accordance with
Section 5.3 .
It must be possible to easily turn the unit at the
coupling by hand.
5.10 Coupling guard
The pump may only be operated with a coupling
guard in accordance with the accident prevention
regulations.
It must be ensured that the coupling guard
used is either made of spark-free material or
the impact test required by the EN 13463 is
satisfied without any reservations. Richter offers both
versions.
The operator must ensure that, after the coupling
protection has been mounted, the requirements of the
machine guideline are fulfilled.
5.11 Electric connection
The operator is obligated to connect the assembly in
accordance with existing regulations 8 (IEC, VDE,
etc.).
Allow only a trained electrician to perform the
electrical connection.
Compare the existing mains voltage with the
indications on the motor’s manufacturer’s nameplate
and choose a suitable circuit.
A motor protection device (motor-circuit switch) is
urgently recommended.
Danger of explosion if the electrical
installation is incorrect.
In areas at risk of explosion, IEC 60079-14
must also be observed for the electrical
installation.
If the pump is mounted on a base plate, ensuring
electrical conduction through the use of a toothed lock
washer or contact disk on the housing foot and
support leg.
The assembly must be grounded in accordance with
currently effective regulations, for example, on the
base plate.