Nilfisk-ALTO DELTABOOSTER 7309021 - Manual (Page 47)

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3.6 Starting up/running in (cf. Fig. 4)
Once the desired settings have been made the cover of the switchboard should be closed and
both locks activated.
Make sure the water supply has been connected.
Turn the main switch ( 1) to position I.
Turn the control switch ( 2), to position I and keep an eye on the control panel (3) to make sure
that water is drawn in and the relief valve closed.
(Are there any red indicator lamps flashing on the control panel? cf. sect. "3.10 Trouble-shoot-
ing and corrections")
Press the starting switch (4) and 1 pump will then start running if the line pressure is on working
pressure or even higher. If the pressure is lower, 2 pumps will start and an additional pump will
start every other second until a working pressure has been achieved.
Fig. 4
The system is now in operation and water may be drawn off under high pressure at the individual
outlets. If consumption exceeds the capacity of the pumps connected a pump will immediately
be started up and an additional pump will follow every other second until capacity meets con-
sumption.
If consumption drops at the outlets so that the pump capacity becomes excessive, one pump
will stop every 15 seconds, until capacity meets consumption.
The controls determine a rotation between the individual C3K pumps so that all units -time-wise-
are subjected to the same load.
If consumption at the outlets is cut off completely all pumps will stop 1 every 15 seconds. The
system will then be on
STAND BY with a working pressure on the line and one or more pumps
will start operating again as soon as the pressure in the line drops below 25 bar or if the outlets
are re-activated.
3
2
4
1