Flowserve CPXS - Manual (Page 21)

CPXS, CPXNS and CPXPS USER INSTRUCTIONS ENGLISH 71569250 07-11
Page 21 of 48 flowserve.com
5.3 Open impeller clearance
The impeller clearance is set in the factory. This
may require adjustment because of piping
attachment or increase in temperatures. For
setting instructions see section 6.7, Setting impeller
clearance.
5.4 Direction of rotation
Serious damage can result if the
pump is started or run in the wrong direction of
rotation.
The pump is shipped with the coupling element
removed. Ensure the direction of rotation of the
motor is correct before fitting the coupling element.
Direction of rotation must correspond to the direction
arrow.
If maintenance work has been
carried out to the site's electricity supply, the
direction of rotation should be re-checked as above
in case the supply phasing has been altered.
5.5 Guarding
Guarding is supplied fitted to the pump set.
In member countries of the EU and EFTA, it is a
legal requirement that fasteners for guards must
remain captive in the guard to comply with the
Machinery Directive 2006/42/EC. When releasing
such guards, the fasteners must be unscrewed in
an appropriate way to ensure that the fasteners
remain captive.
Whenever guarding is removed or disturbed ensure
that all the protective guards are securely refitted
prior to start-up.
5.6 Priming and auxiliary supplies
5.6.1
CPXS and CPXNS filling and priming
Ensure inlet pipe and pump casing
is completely full of liquid before starting continuous
duty operation.
Priming may be carried out with an ejector, vacuum
pump interceptor or other equipment, or by flooding
from the inlet source.
When in service, pumps using inlet pipes with foot
valves may be primed by passing liquid back from
the outlet pipe through the pump.
5.6.2 CPXPS filling and self priming
Fill the pump with liquid to be
pumped, or compatible liquid, via the filling hole,
before starting continuous duty operation.
Pump housing
filling hole.
When the initial fill
reaches the suction
pipe, excess liquid
will
flow out of the
casing.
Pump size Initial fill litre (US gal.)
40-40CPXPS125 2.5 (0.65)
80-80CPXPS125 6.0 (1.60)
40-40CPXPS160 3.0 (0.80)
80-80CPXPS160 6.5 (1.75)
40-40CPXPS200 5.0 (1.30)
65-65CPXPS200 8.5 (2.25)
80-80CPXPS250 12.0 (3.20)
The pump has self-priming action for which a
separate air pump is not normally required.
5.6.3
Auxiliary supplies
Ensure all electrical, hydraulic,
pneumatic, sealant and lubrication systems (as
applicable) are connected and operational.
5.7 Starting the pump
5.7.1
Starting the CPXS and CPXNS
a) Ensure flushing and/or cooling/
heating liquid supplies are turned ON, before
starting pump.
b) CLOSE the outlet valve.
c) OPEN all inlet valves.
d) Prime the pump.
e) Start motor and check the outlet pressure.
f) If the pressure is satisfactory, SLOWLY open
the outlet valve.