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MHP-TN USER INSTRUCTIONS ENGLISH 71576313 - 02/07
Page 17 of 28 flowserve.com
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 (§ 5.3.1, 5.3.2) and before the first start
(§ 5.4.2).
4.7 Final shaft alignment check
a) Check the alignment pump-motor according to
the procedure § 4.4.2. Rectify if necessary by
adjusting the motor only.
b) Check by hand that the pump turns freely.
A binding indicates a distortion of the pump,
which is due to excessive pipe strain. If
necessary the pipe design must be re-
examined.
c) If it provided, connect auxiliary pipe systems
(hydraulic, pneumatic, sealing system).
d) Control tightness and functionality of auxiliary
piping.
4.8 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 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. See sections
5.5.3 and 5.5.4.
If a defect of cooling can lead to temperature
higher than those acceptable a system of cooling
surveillance must be installed.
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 be carried out by
fully 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 riskof 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 lubricationsystems (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.