Flowserve CPXPM - Manual (Page 14)

CPXPM USER INSTRUCTIONS ENGLISH 71569160 09-09
Page 14 of 28 flowserve.com
Notes:
a) Total seal pressure is equal to pressure at seal plus suction
pressure.
b) Differential pressure in bar equals head in metres multiplied by
specific gravity all divided by 10.19.
4.5.5.2 Pumps fitted with heating jackets
Connect the heating pipes from the site supply. The top
connection should be used as the outlet to ensure
complete filling/venting of the annulus with
heating/cooling liquids. Steam is usually in at the top,
out at the bottom to permit condensate drainage.
4.5.5 Final checks
After connecting piping to the pump, rotate the shaft
several times by applying gentle pressure on the motor
fan to ensure there is no binding and all parts are free.
Check the tightness of all bolts in the suction and
discharge pipework. Check also the tightness of all
foundation bolts.
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 5.4, 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 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 or its associated
sealing system 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.
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 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.