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4.4 Start-up
The installer/operator must always use material compatible with the pumped liquid and in line with the
pump design.
WARNING: it is forbidden to use liquids that are incompatible with the construction materials of the pump’s
components or in an environment where there are incompatible liquids.
In order to start-up the pump, proceed as follows:
1 Check that the suction and delivery pipes are correctly connected.
WARNING: Dry operation of ADH pumps, besides damaging the sealing, causes the fusion of
sliding friction elements and may result in fire.
2. Open the manual ball valves of the suction and delivery liquid pipes.
3. The level of the liquid must be 0.5m above the pump.
4. Start the motor with the appropriate controls.
5. To stop the pump, only use the stop controls of the pump’s electric motor.
WARNING: never stop a working pump by closing the liquid circuit suction and/or delivery ball
valves: DANGER OF PUMP STALLING AND/OR FIRE DUE TO SEAL BURN-OUT CAUSED BY DRY
OPERATION.
WARNING: check that there is no abnormal noise while the pump is working. If so, immediately stop
the pump, check and eliminate the cause.
WARNING: check that there is no air or gas bubbles in the output liquid. If so, immediately stop the
pump, check and eliminate the cause.
WARNING: do not install filters on the suction pipe that may cause a loss of pressure.
6. After the pump’s first two working hours, and after correctly stopping it, perform the following inspection:
A. through the inspection hole in the casing, visually check that there is no leakage from the seal.
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