Idex Wright Flow Technologies RTP Series, Installation, Operation And Maintenance Manual

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Where motor mounting options are to be installed follow the manufactures
recommended guidelines. However, when installing a pump complete with base and
drive the following guidelines must be observed:

The preferred drive arrangement for any rotary lobe pump is in-line direct coupled.

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.

Couplings must always be enclosed in a suitable guard to prevent contact with
rotating parts that could result in personal injury. Guards should be of suitable
material, and of sufficiently rigid design to prevent contact with rotating parts
under normal operating conditions.

When installing pump sets in flammable or explosive environments, or 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.

Baseplates must be secured to a flat level surface such that distortion and
misalignment are avoided. Once baseplates are fastened in position the drive
alignment must be re-checked.

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 another similar method.
Ensure all components are correctly grounded.
3.3.2 Installation with CIP Systems.
The RTP
TM
range has been designed to be effectively cleaned by the CIP procedures
recommended for in-place cleaning of the process plant. To assist in maximising the
effectiveness of cleaning within the pump head it is recommended that during the
cleaning cycle a flow rate equivalent to a velocity of 1.5 metres per second; in a pipe of
equal diameter to the rotor case connections is achieved. With a differential pressure of
2 to 3 bar (30 to 45 psi) being developed across the pump head
For applications where maximum drainage of the pump head is required, for example in
the handling of ‘Agri-Foodstuffs’ and/or where CIP is employed, the pump ideally should
be mounted with the rotor case connections in the vertical orientation. A procedure must
be determined to ensure that the pump is effectively cleaned. It is recommended that
this cycle would typically include a combination of some or all of the following: Acidic or
Caustic based Detergents, ‘Sanitisers’, Disinfectants and Water rinses. These must be
appropriate to both the products being handled and the materials of construction of the
pump.