Viking Pump TSM285: Classic+ Lobe Pump - Manual (Page 7)

SECTION TSM 285 ISSUE A PAGE 7 OF 36
When installing a pump complete with base plate, motor and
drive, the following guidelines must be observed:
a) The preferred drive arrangement for any rotary lobe pump
is in-line direct coupled. If an alternative is required please
contact Viking Pump or your Viking Pump distributor.
b) Flexible couplings must always be
incorporated and correctly aligned within
the limits recommended by the coupling
manufacturer. To check coupling alignment
rotate the shaft by at least one full revolution
and ensure that the shaft rotates smoothly.
Couplings of a non-flexible design must never
be used.
c) Couplings must always be enclosed in a
suitable guard to prevent contact with rotating
parts, which could result in personal injury.
Guards should be of suitable material, (see d)
and of sufficiently rigid design to prevent
contact with rotating parts under normal
operating conditions.
d) When the pump is installed in a flammable or
explosive environment, or is used for handling
flammable or explosive materials, special
consideration must be given. Not only to the
safety aspects of the drive unit enclosure
but also to the materials used for both the
coupling and the guard to eliminate the risk of
explosion.
e) Base plates must be secured to a flat level
surface such that distortion and misalignment
are avoided. Once base plates are fastened
in position the drive alignment must be re-
checked, (see b).
f) When using electric motor drives, ensure that the electrical
supply is compatible with the drive and controls and that the
method of wiring is correct for the type of starting required
by the motor i.e. Direct On Line, or other similar method.
Ensure all components are correctly grounded.
3.3.2 Installations with
CIP SySTEMS
The Classic+ pump range is designed to be effectively cleaned
by the CIP procedures recommended for in place cleaning of
process plant. It is recommended that a differential pressure
of 2 to 3 Bar (30 to 45 psi) be developed across the pump
head during cleaning in order to develop the necessary fluid
velocities required for thorough cleaning.
Observing the following general guidelines should ensure the
best possible suction condition is created.
- Suction piping is at least the same diameter as the pump
connections.
- The length of suction piping is kept to the absolute
minimum.
- The minimum number of bends, tees and pipework
restrictions are used.
- Calculations to determine system NPSHa are carried out for
the worst condition see below.
Should advice on pump or system NPSH characteristics be
required contact the factory or their authorized distributor.
When installing a pump complete with base plate, motor and
drive, the following guidelines must be observed:
a) The preferred drive arrangement for any rotary lobe pump
is in-line direct coupled. If an alternative is required please
contact Viking Pump or your Viking Pump distributor.
b) Flexible couplings must always be
incorporated and correctly aligned within
the limits recommended by the coupling
manufacturer. To check coupling alignment
rotate the shaft by at least one full revolution
and ensure that the shaft rotates smoothly.
Couplings of a non-flexible design must never
be used.
c) Couplings must always be enclosed in a
suitable guard to prevent contact with rotating
parts, which could result in personal injury.
Guards should be of suitable material, (see d)
and of sufficiently rigid design to prevent
contact with rotating parts under normal
operating conditions.
d) When the pump is installed in a flammable or
explosive environment, or is used for handling
flammable or explosive materials, special
consideration must be given. Not only to the
safety aspects of the drive unit enclosure
but also to the materials used for both the
coupling and the guard to eliminate the risk of
explosion.
e) Base plates must be secured to a flat level
surface such that distortion and misalignment
are avoided. Once base plates are fastened
in position the drive alignment must be re-
checked, (see b).
f) When using electric motor drives, ensure that the electrical
supply is compatible with the drive and controls and that the
method of wiring is correct for the type of starting required
by the motor i.e. Direct On Line, or other similar method.
Ensure all components are correctly grounded.
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