Flowserve WR - Manual (Page 13)

WR and CR USER INSTRUCTIONS ENGLISH 26999968 10-12
Page 13 of 28 flowserve.com
f) For pumping hot liquids, to avoid seal damage, it is
recommended that any external flush/cooling
supply be continued after stopping the pump.
4.5.5.3 Pumps fitted with heating/cooling jackets
Connect the heating/cooling pipes from the site supply.
The top connection should be used as the outlet to
ensure complete filling/venting of the annulus.
4.5.6 Final checks
Check the torque of all bolts in the suction and
discharge pipework. Check also the torque of all
foundation bolts.
After connecting piping to the pump, rotate the shaft
several times by hand to ensure there is no binding
and all parts are free.
4.6 Electrical connections
Electrical connections must be made
by a qualified Electrician in accordance with relevant
local national and international regulations.
It is important to be aware of the EUROPEAN
DIRECTIVE on potentially explosive areas where
compliance with IEC60079-14 is an additional
requirement for making electrical connections.
It is important to be aware of the EUROPEAN
DIRECTIVE on electromagnetic compatibility when
wiring up and installing equipment on site. Attention
must be paid to ensure that the techniques used during
wiring/installation do not increase electromagnetic
emissions or decrease the electromagnetic immunity of
the equipment, wiring or any connected devices. If in
any doubt contact Flowserve for advice.
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 must
be fitted.
If not supplied pre-wired to the pump unit, the controller/
starter electrical details will also be supplied within the
controller/starter.
For electrical details on pump sets with controllers
see the separate wiring diagram.
See section 5.2, Direction of rotation,
before connecting the motor to the electrical supply.
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 any 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, install a protection
device 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, fit a
power monitor 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 or its associated
sealing system can cause a hazard install an
appropriate leakage detection system.
To prevent excessive surface temperatures at
bearings carry out temperature or vibration
monitoring.
5 COMMISSIONING, START-UP,
OPERATION AND SHUTDOWN
These operations must be carried
out by fully qualified personnel.
5.1 Pre-commissioning procedure
5.1.1 Lubrication
Electric motors are supplied pre-greased and are
normally sealed for life. If in doubt, refer to motor
instruction manual.
5.2 Direction of rotation
Serious damage can result if the
pump is started or run in the wrong direction of
rotation. Ensure the pump is given the same rotation
as the pump 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.