Frost Protection - Alto Wap SC 710 W Operating Instructions Manual

SC 710 W / SC 740 W / SC 780
DX 840 W / DX 860 / DX 900 / DX 980 / TitanPlus
priate protective clothing (e.g.
GB
gloves, face mask, apron).
Only approved scale removers
may be used for descaling.
Use Wap Anti-Scale, No. 8326
With regular use of Wap Anti-
Scale, descaling will normally
not be necessary.
Incorrect operation of the machi-
ne or the use of non-approved
cleaning agents can cause
deposits in the pipework system.
Scaling is caused by the water
hardness and is indicated by a
gradual increase in the water
pressure displayed on the pressu-
re gauge.
If the working pressure is excee-
ded by 10 bar (with the Vario-
Press trigger gun open), the
system must be descaled.
Procedure:
• Unscrew the high-pressure
nozzle from the spray lance
and place separately in the
Wap scale remover.
• Draw in Wap scale remover
via the metering valve by
hanging a cleaning agent
hose into the scale remover
bottle and setting the mete-
ring valve to maximum
concentration.
• Hold the spray lance in a
separate container to collect
the discharged liquid.
• Switch on the high-pressure
pump.
• Actuate the trigger gun. Wap
scale remover is drawn in and
emerges from the spray lance
foaming vigorously after
approx. 1 minute.
• Switch off the high-pressure
pump and allow the scale
remover to work for approx.
15 minutes.
• Flush out the pump system
well with clean water.
• After approx. 2 minutes, a
steady jet of water must
emerge at the water outlet
tube. If this is not the case,
repeat the descaling procedu-
re.
• Screw the high-pressure
nozzle onto the spray lance.
12

FROST PROTECTION

If the high-pressure cleaner is
stored in a room in which tempe-
ratures of below 0° C can occur,
antifreeze must first be flushed
through the pump.
During the flushing process,
actuate the trigger gun 2 or 3
times.
In order to avoid any risk, the
machine should preferably be
stored for a short period in a
heated room before it is put into
service again.
1)
Option / model variants