WDX USER INSTRUCTIONS ENGLISH 71576322 06-05
Page 22 of 46
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4.9 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
5.7.4 and 5.7.5.
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 Pre-commissioning procedure
5.1.1 Lubrication
Determine the mode of lubrication of the pump set,
eg grease, oil, product lubrication etc.
Grease lubricated pumps and electric motors are
supplied pre-greased.
Other drivers and gearboxes, if appropriate, should
be lubricated in accordance with their manuals.
In the case of product lubricated
bearings the source of product supply should be
checked against the order. There may be
requirements for an external clean supply, particular
supply pressure or the commencement of lubrication
supply before pump start-up.
5.1.2 Oil Lubrication
The bearings are lubricated by pins. A constant level
oiler automatically maintains the correct oil level.
The oiler supplies the necessary quantity of oil. It
operates on the liquid seal principal and feeds with oil
only when the quantity of oil becomes too low in the
bearing. It will stop to feed once a sufficient quantity
of oil is in the bearing.
The reserve contained in the reservoir refills
automatically the natural losse s of the bearing. As
soon as the oil level approaches the minimum level of
the reservoir, refill the reservoir.
Regarding the quality and the quantity of the oil to be
used, refer to the lubrication table and information
below.
For oil lubricated pumps, fill the bearing
housing with correct grade of oil to the correct level, ie
sight glass or constant level oiler bottle.
See below for the correct side on which constant
level oilers should be installed.
Oil er
Oiler
Direction of rotation of
th e pu mp
Drive en d sid e
When fitted with a constant level oiler, the bearing
housing should be filled only by unscrewing or
hinging back the transparent bottle and filling the
bottle with oil. Do not fill the bearing housing through
the breather hole.
