Cooling or heating liquid
Medium Compressed :
For LPG, expect liquefied propone below 130 °F (55 °C) above lubricant and heat transfer media (e. g. Down
them) below 360 °F (180 °C) above.
Fig. 6. Flexible Coupling
2.1.5. Coupling
The pump and driver are connected to each other by a flexible coupling. Fig. 6 illustrates the type of flexible coupling most
frequently used. All couplings demand very careful alignment of the pump and driver shafts, because any misalignment
(whether radial or angular) can only be absorbed to a very limited extent by the rubber or elastic members of the coupling at the
prevailing operating speeds see section 3.2).
2.1.6. Foundation
When we supply a complete pumping set, including motor and combined base plate, we only bolt and dowel the pump on to
the base plate at our works, after having aligned it with the motor. We do not dowel the driver, because the combined base
plate cannot, for economic reasons, be constructed so rigidly that it will not distort to a certain extent during transport, or it is set
on an uneven foundation. It only attains its ultimate stability after having been placed on the foundation and grauted in with a
cement mixture. Therefore, the pumping set must be levelled up with the aid of shims and carefully aligned afresh after erection
at side (see section 3.2.1) and, only after this has been done, should the driver be dowelled in place.
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