Operating instructions B-Series
Version 2.4, En Page 46 of 81 21-10-2005
7.8 Variable speed gears
Consult the instructions for use of the supplier of variable speed gears or reduction gearing.
7.9 Shaft coupling
Jolting loads occur during the operation of the pump/pump unit. Therefore choose the shaft coupling with
sufficient spare capacity for the nominal motor torque. This can be, for example, 1.5 to 2 times the torque
recommended for non-jolting continuous loads. For the B-Series preselection has already been made, see
technical specifications B-Series.
Make sure that the coupling meets the set requirements. If the pump unit is used in an explosion-
dangerous environment (ATEX zone), see technical specifications B-Series.
A bellows coupling must always be used with this application (ATEX environment).
Extra point(s) for attention with ATEX pumps.
P10.
K8.
Ensure the good fitting of the coupling on the pump shaft and drive gear.
Make sure you choose the right coupling. ∗
∗∗
∗
• The coupling must be sufficient for the power and number of revolutions.
• The coupling must be EX, cat. 2
Follow the instructions of the manufacturer. See technical specifications B-
Series.
∗
∗∗
∗
With an Ex-pump (unit) supplied by BBA Pompen these aspects are ensured for the application
indicated by the client with the associated indicated medium.
Check the elastomers of the coupling before the pump is started up.
If cracks are visible the coupling rubber must be replaced.
7.10 Alignment
Ensure the good alignment of the shafts. To do this proceed according to the conditions and instructions
for use for the shaft coupling concerned. The alignment of the flexible coupling can be checked by
placing a straight-edge or batten on the outside of the coupling and/or by measuring the play on the
coupling halves in four places on the circumference. For the alignment of differing couplings reference is
made to the specific instructions. A protective cover is to be fitted over the coupling to prevent contact
with turning parts.
Extra point(s) for attention with ATEX pumps.
P9.
Ensure the good alignment of the pump and drive gear.
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