Flowserve CPXVC Manual de usuario descargar pdf (Pagina 15)

CPXVC USER INSTRUCTIONS ENGLISH 26999930 03-11

Page 15 of 32 flowserve.com

If there are any circumstances in which the system

can allow the pump to run dry, or start up empty, a

power monitor should, in addition to level control, be

fitted to stop the pump or prevent it from being

started. This is particularly relevant if the pump is

handling a flammable liquid which would need an

abatement technique due limitations of the ATEX

Categories available.

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

The pump grease lubricated antifriction bearings are

normally supplied fitted with grease nipples and with

pre-greased bearings.

Grease lubricated electric motor bearings are generally

pre-greased. Refer to the motor UI for information on

the motor lubrication schedule.

Pumps with grease lubricated thrust bearings and

electric motors are supplied with pre-greased bearings.

Where the ambient is very low special lubricants are

required. If in doubt consult Flowserve for

recommendations of grease types at these lower

temperatures. Where low ambient grease has been

specially fitted this is Shell Aeroshell 22.

5.2 Pump lubricants

5.2.1 Recommended grease lubricants

Grease

NLGI 2 *

NLGI 3

Temp. range

-20 to +100 ºC

(-4 to +212 ºF)

-20 to +100 ºC

(-4 to +212 ºF)

Designation

acc. to DIN

KP2K-25

KP3K-20

Energrease LS-EP2 Energrease LS-EP3

Elf

Multis EP2 Multis EP3

Fuchs

RENOLIT EP2 RENOLIT EP3

Esso

Beacon EP2 Beacon EP3

Mobil

Mobilux EP2 Mobilux EP3 **

Rembrandt EP2 Rembrandt EP3

Shell

Alvania EP2 Alvania EP2

Texaco

Multifak EP2 Multifak EP3

SKF

LGEP 2

* NLGI 2 is an alternative grease and is not to be mixed with other

grades.

** Standard pre-packed grease for fitted antifriction bearings.

5.2.2 Bearing sizes and grease capacities

Bearing location Size Grease quantities – g (oz)

Drive end thrust

bearing

3311C3 Z 35 (1.2)

Optional thrust

bearing

7311

back-to-

back pair

35 (1.2)

Pump end line

bearing

6313C3 Z 20 (0.7)

Note: The bearing sizes do not constitute a purchasing

specification.

5.2.3 Recommended grease lubricants

* NLGI 2 is an alternative grease and is not to be mixed with other

grades.

** Standard pre-packed grease for fitted antifriction bearings.

5.2.4 Recommended fill quantities

Refer to section 5.2.2, Bearing sizes and grease

capacities.

5.2.5 Lubrication schedule

5.2.5.1 Grease lubricated bearings

When grease nipples are fitted, one charge between

grease changes is advisable for most operating

conditions; ie 2 000 hours interval. Normal intervals

between grease changes are 4 000 hours or at least

every 6 months.

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