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ANL.HWA
23.10.2001 16:08 Uhr
2
Pressure line
connection
Intake line
connection
8. Pressure line connection
The delivery pipe (we recommend at least size
3/4") has to be connected directly to the flow
switch.
A 1/2" pressure hose can also be used with the
appropriate screw connections, of course, but this
will reduce the delivery rate.
9. Technical data of the flow switch
Power supply:
Rated current:
Switch-on pressure:
Max. operating pressure:
Water temperature:
Max. flow rate:
Seite 9
HWA 1205
NIRO
230 V ( 50 Hz
12 A
1 - 3.5 bar
10 bar
55°C
80 l/min
10. Flow switch function and start-up
3
1. RESET button
2. Red LED (dry cut-out)
3. Green LED (stand-by)
4. Switch-on pressure setting screw
Important!
For the flow switch to work correctly, the pump's
maximum pressure must be at least 0.6 bar
higher than the triggering pressure.
The switch-on pressure can be adjusted with the
screw (4).
Pilot lamps:
Green LED (3): Stand-by
Red LED (2):
Dry running cut-out (pump motor
does not run)
If the pump draws in no water because the water
level is too low or there is a leak in the suction pipe,
the flow switch will switch off the pump immediately
and the red LED (2) will light up. If the red LED lights
up, check the water level immediately and examine
the suction line for leaks. If you find the cause of the
trouble and manage to remedy any faults, press the
RESET button (1) or switch the unit OFF and ON
briefly. The red LED will go out and the green LED
will begin to shine. The water management system is
then ready for operation again.
GB
9
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