VLT
Vertical Process Pump
33 V1.090418
5. Disconnect the piping from the pump if you heat one side of the pipe to align the pipe to
the pump.
6. Pump and pipe flanges must be parallel; they should mate together without effort, and
with the bolt holes properly in line.
7. Check the fine alignment by clocking or using a Dial Type Indicator (DTI) on the coupling.
Check the operating instruction for the coupling.
When heating takes place close to the flange, there is a danger that the flange
seal will become rippled and leaky. No more welding work can be carried out
on the piping when it is screwed to the pump.
Make sure that there are isolation block valves at the pump for each type of
auxiliary piping.
Do not install unsupported piping on the pump.
Make sure electrical connections do not impose any stress on the pump unit.
Remember that the pump must not be moved once the discharge head has
been set: the piping (both suction and discharge) is the one aligned to the
pump.
When aligning, all the elements to be aligned (including the pipes) should be at
the same temperature (room temperature).
It is important to confirm that the pump can be moved out from the foundation
without cutting or welding (only by adjusting connections and flanges).
Do not use drifts or cheater bars to force alignment of bolt holes – serious
damage to the pump will result.
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