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Installation and maintenance instructions Wilo-Horizontal pumps
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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.
4.6
Final shaft alignment check
a) Check the alignment pump-motor according to
the procedure § 4.3.2. 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 pipes strains. If neces-
sary the pipework 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.
4.7
Protection systems
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 tempera-
ture 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 associa-
ted sealing system can cause a hazard it is recom-
mended 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
5.5.4 and 5.5.5.
If a defect of cooling can lead to temperature hig-
her 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 Commisioning, start-up, operation and
shutdown
These operations must be carried out by fully
qualified personnel.
5.1
Direction of rotation
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
These operations must be carried out by person-
nel with approved qualifications.
To avoid any risk of jamming, the direc-
tion of rotation will be checked after pri-
ming of the pump (§ 5.3.1, § 5.3.2) and
before the first start (§ 5.4.2).
CAUTION!
Starting or operating pumps with the
wrong direction of rotation can be harm-
ful 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-che-
cked as above in case the supply phasing
has been altered.
Ensure all electrical, hydraulic, pneu-
matic, sealant and lubrication systems
(as applicable) are connected and opera-
tional.
Ensure the inlet pipe and pump casing
are completely full of liquid before star-
ting continuous duty operation.
CAUTION!
CAUTION!
CAUTION!
CAUTION!
