Specifications

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Where motor mounted 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 other similar method. Ensure

all components are correctly grounded.

3.3.2 Installation with CIP Systems.

The RTP

range has been designed to be effectively cleaned by the CIP procedures

recommended for in place cleaning of 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.