Flowserve VF - Manual (Page 19)

VF USER INSTRUCTIONS ENGLISH 71561233 - 11/09
Page 19 de 32
The motor must be wired up in
accordance with the motor manufacturer's
instructions (normally supplied within the terminal
box) including any temperature, earth leakage,
current and other protective devices as
appropriate. The identification nameplate should
be checked to ensure the power supply is
appropriate.
A device to provide emergency stopping shall be
fitted.
Carry out the ground connections according to the
current local regulations.
To avoid any risk of jamming, the
direction of rotation will be checked after priming of
the pump (§ 5.4.1) and before the first start (§
5.4.2).
4.7 Protection systems
The following protection systems are
recommended particularly if the pump is installed
in a potentially explosive area or is handling a
hazardous liquid. If in doubt consult Flowserve.
If there is any possibility of the system allowing the
pump to run against a closed valve or below
minimum continuous safe flow a protection device
should be installed to ensure the temperature of
the liquid does not rise to an unsafe level.
If there are any circumstances in which the system
can allow the pump to run dry, or start up empty, a
power monitor should be fitted to stop the pump or
prevent it from being started. This is particularly
relevant if the pump is handling a flammable liquid.
If leakage of product from the pump can cause a
hazard it is recommended that an appropriate
leakage detection system is installed.
To prevent excessive surface temperatures at
bearings it is recommended that temperature or
vibration monitoring are carried out. See sections
5.5.3 and 5.5.4.
Except when explicitly required by the customer in
the specifications, when a possibility of reverse
rotation exists the customer must install a reverse
rotation protection device.
The customer must install all equipment required
to avoid water hammer.
5 COMMISSIONING START-UP,
OPERATION AND SHUTDOWN
These operations must only be carried
out by qualified personnel.
5.1 Direction of rotation
Starting or operating pumps with
the wrong direction of rotation can be harmful to
the pumps. Ensure that the pump rotation is the
same as the arrow on the pump casing. It is
preferable to check the direction of rotation before
installing the coupling. If not, the pump must be
filled in with the liquid before start-up.
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.
5.2 Guarding
Guarding is supplied fitted to the pump set.
If this has been removed or disturbed ensure
that all the protective guards around the pump
coupling and exposed parts of the shaft are
securely fixed.
5.3 Priming and auxiliary supplies
Where there is any risk of the pump being
run against a closed valve generating high liquid
and casing external surface temperatures it is
recommended that users fit an external surface
temperature protection device.
Ensure all electrical, hydraulic,
pneumatic, sealant and lubrication systems (as
applicable) are connected and operational.
Ensure the inlet pipe and pump
casing are completely full of liquid before starting
continuous duty operation.
These operations must be carried out by personnel
with approved qualifications.