Function Of The Product - salmson ALTI-AQUA Notice De Montage Et De Mise En Service

ENGLISH
6.2.2 Switchgear
•Ensures safe operation of the pressure boosting system.
•IP 54 protection.
•Thermal protection factory-set according to the nominal cur-
rent of the motors, as noted on the rating plate of the motors.
•Other safety devices and the main switch for the pressure
boosting system.
Front side (see Fig. 2)
Electronic operating board:
1. LED indicator for "Voltage switched on"
2. LED indicator for "Operation per pump"
3. LED indicator for "Fault per pump"
4. Rocker switch per pump with 3 functions: Manual mode – 0
– Automatic mode.
5. Low-water display.
6. Main switch for voltage ON/OFF
Inner side (see Fig. 3)
1. Main switch with terminals for the power supply network.
2. Magnetic circuit breakers
3. Control module with terminal for external devices (pressure
switch, float switch ...).
4. Contactor.
5. Thermal overload relay.
6. Transformer board with fuses for control circuit
Supply board (see Fig. 4)
1. Primary fuses of the transformer.
2. Secondary fuses of the transformer.
3. Voltage selection switch.
Switching module (see Fig. 5, 6 and 7)
Fig. 5. Terminal for the external devices.
1. and 2. Terminals for optional protection against low water
level (with jumper when delivered)
Fig. 6. Control module.
Fig. 7. Bypass control module.
Pressure switches for automatic activation (see Fig. 8)
Two pressure switches permit the two pumps to be activated
and deactivated automatically.
1. Adjusting screw for switch-off pressure (upper switching
point).
2. Adjusting screw for pressure difference (lower switching
point).
6.2.3 Nominal diameter of the pipes
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Series 3/5 m /h: pipes in stainless steel with 2" thread
6.2.4 Protection against low-water level
The pressure boosting system must be equipped with protec-
tion against low water level.
When connected directly to the municipal water supply net-
work: install a pressure switch in the inlet pipe and connect it in
the switchgear (Fig. 5 - 1 and 2).
When connected to a break tank: install a float switch in the
break tank and connect it in the switchgear (Fig. 5 - 1 and 2).

6.3 Function of the product

6.3.1 Operation
Automatic operation of the pressure boosting system is per-
formed by the switchgear.
When the pressure drops and the set value for pressure switch
P1 is reached, pump 1 switches on.
If the pressure drops further and the set value for P2 is reached,
pump 2 switches on.
•When the pressure rises and the set value for pressure switch P2
is reached, pump 2 is stopped.
•If the set value for pressure switch P1 is reached, pump 1 is
stopped.
•Pump cycling is applied when the pumps are reactivated.
If the control module (Fig. 6) fails, it can be replaced by the
bypass control module (Fig. 7) in order to ensure emergency
operation.
In this case, pump cycling no longer takes place; pressure
switch 1 always controls pump 1 and pressure switch 2 always
controls pump 2.
Pump cycling
To keep the loading and operating time of all pumps at an
even level, the sequence of activated pumps is altered cycli-
cally every time the base-load pump is deactivated.
Operating mode
A rocker switch on the front side with 3 positions (Fig. 2, No. 4)
allows the selection of 3 operating modes per pump:
•Position 0:
The pump is switched off.
•Manual mode position:
The pump is in permanent operation as long as the rocker
switch is held in this position. When released, the rocker switch
automatically goes back to position 0.
•Automatic mode position:
All functions of the pressure boosting system are active.
Magnetic fault
A magnetic circuit breaker (Fig. 3 No. 2) protects the motors
from short circuits.
Thermal fault
The motor is protected from overloading by a thermal over-
load relay (Fig. 3 No. 5).
6.3.2 Input (see Fig. 5)
1. and 2. Protection against low water level: A pressure switch
(normally open contact) or a float switch protects the pressure
boosting system from low water; an On-Off input is provided for
this sensor.
The pressure boosting system is reactivated after a delay of 5
seconds after the contact closes (low water fault is no longer
present).
6.3.3 Indicator lights (see Fig. 2)
Information from the pressure boosting system
1. Voltage On: Indicates that the mains voltage is switched on
(LED is lit yellow continuously)
5. Low water: Indicates that there is low water (LED is lit red
continuously)
Information from the pump
2. Pump switched on: Indicates that the pump is operating
(LED is lit green continuously)
3. Pump alarm: Indicates pump failure (LED is lit red) when the
thermal overload relay is triggered (motor overload)
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