Technical Data - EBARA E-SPD+ Manual De Instrucciones Y Mantenimento

LEGEND
For correct operation of the pressurization system, we recommend the use small size pressure tank. It is necessary to stabilize any pressure
1: Pump
fluctuations during the variation frequency of the inverter.
2: E-SPD+ Device
3: Gate valve
Pay attention to the calculation for pre-charge of the pressure tank. In case of changes in the reference pressure, the pre-charge of the tank must
4: Pressure transducer
be adjusted according to the calculation.
5: Non return valve
Pp = Pre-charge pressure
6: Pressure tank
Ps = Setpoint pressure
7: Drain off valve
Dr = Delta restart pressure
Pp = (Ps – Dr) – 0,5 bar
1. HYDRAULIC INSTALLATION (CONSTANT PRESSURE)
Figure 1
2. HYDRAULIC INSTALLATION (DIFFERENTIAL PRESSURE)
OPTION A: 2 PRESSURE SENSORS
*Note: For Option A, connect discharge side sensor to 4-20mA (1) and suction side sensor to 4-20mA (2).

TECHNICAL DATA

INFO
Figure 2
382
OPTION B: 1 DIFFERENTIAL PRESSURE SENSOR