en – Original Instructions
20 e-SHE, e-SHS – Additional Installation, Operation and Maintenance Instructions
4.3 Hydraulic connection
DANGER:
All the hydraulic and electrical connections must be completed by a technician possessing the
technical
-professional requirements outlined in the current regulations.
WARNING:
Piping must be sized to ensure safety at the maximum operating pressure.
WARNING:
Install appropriate seals between the unit couplings and the pipings.
4.3.1 Guidelines for the hydraulic system
The figures show the hydraulic reference diagrams for positive suction head and suction lift
installations.
Figure 3: Positive suction head installation
1. Pump unit
2. Anti-vibration joint
3. Overpressure safety on-off valve
4. On-off valve
5. Pressure gauge
6. Minimum pressure switch
7. Check valve
8. Electrode probes or float
9. Automatic relief valve
10. Electric panel
11. Pressurised circuit.
EHM_M0016_B_sc
10
5
5
6
8
74 2 2 4
4
4
9
3
Q
1
11