en – Original Instructions
e-SHE, e-SHS
– Additional Installation, Operation and Maintenance Instructions 29
1. Check that all the operations described in the previous paragraphs have been completed
correctly.
2. Shut off the discharge on-off valve almost completely.
3. Fully open the suction on-off valve.
4. Start the unit.
5. Gradually open the discharge on-off valve until half open.
6. Wait a few minutes and then fully open the discharge on-off valve.
After the start-up procedure, with the pump unit in operation, check that:
• No liquid is leaking from the unit or pipes
• The maximum pressure of the unit at the discharge, determined by the available suction
pressure, must not exceed the maximum pressure (PN)
• The current absorbed is within the rated limits (calibrate the thermal overload protection of
the motor)
• There is no unwanted noise or vibrations
• At zero flow rate, the pressure at the discharge corresponds to the expected nominal
pressure
• No vortexes can occur at the end of the suction pipe, at the point of the foot check valve
(suction lift installation).
NOTICE:
If the unit does not deliver the required pressure, repeat the operations in
Filling - Priming on
WARNING:
After startup, run the unit for a few minutes with several users open in
order to wash the inside
Settling of the mechanical seal
The pumped liquid lubricates the seal faces of the mechanical seal; under normal conditions, a
small amount of liquid may leak out. When the unit is run for the first time, or immediately after
the seal is replaced, more liquid may temporarily leak out. To help the seal settle and to
reduce leaking:
1. Close and open the on-off valve on the discharge side two or three times with the unit
running.
2. Stop and start the unit two or three times.
5.5 Stopping
1. Shut the on-off valve located on the discharge line.
2. Stop the pump unit and check that the motor slows down gradually.
3. Gradually re-open the valve and check that the motor remains still.
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