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3.10 Venting GH model
Original Instructions
When the machine is properly
connected to supply water,
electrical installation and a high
pressure hose (or pipeline) the
high pressure pump must be
vented before it is operational.
1. Turn the main switch, (2), to
position "ON".
2. It is important that the heating
tank is fi lled with water before
the venting can take place.
Pushing the "START" push
button (3) and keeping it de-
pressed will do this. The inlet
solenoid valve then opens
d
and allows water to enter the
heating tank. When the tank
is full, the solenoid valve will
automatically shut off , and
the machine will start. This
procedure will be necessary
whenever the tank is emptied
– i.e. during service.
3. Otherwise push the "START"
button (3), and the machine
will start.
4. Open the outlet point - spray
handle on high pressure
hose, (d) or outlet on piping
system (e) without having a
spray lance connected.
5. Let the water run until all air
has escaped from the pump
(even water fl ow). If little
or no water fl ows from the
system, it may be necessary
to vent the internal feed pump
separately. The Nilfi sk service
technician should perform this
by loosening the center screw
on the feed pump, see arrow.
6. In the case of a recently in-
stalled piping system, or if the
pipeline and the pump have
been emptied in any other
way, the system should be
vented by starting the pump
and then letting the water run
e
at each outlet point of the
pipeline at turns. It is recom-
mended to begin with most
distant outlet (height and/or
length).
7. When connecting the high
pressure hose directly to the
machine, starting the pump
and activating the trigger of
the spray handle without hav-
ing attached the spray lance
should vent the system.
8. Stop the machine by pressing
the "STOP" push button (4).
The machine is now vented.
SH SOLAR G, GH, GW
9
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