A.R.I. Water loss reduction EN - Manual (Page 3)

Troubleshooting:
Problem Possible
causes Solutions.
No flow in the line 1. Shut off valves have not
been opened after
installation.
2. The product is installed
the wrong way round
(against the flow
direction).
3. Mains pressure is less
than 1 bar.
1. Check shut off valves.
2. Check direction of the
product, and if necessary
invert it in accordance
with the flow direction.
3. The UFR requires a
minimum mains pressure
of 1 bar to work normally.
There is a leak in the house
but the UFR is not working. 1. There is a lot of air in the
system following the
installation.
2. The leak in the house is
more than 30 liters per
hour (cumulative).
3. Sealant has entered the
sealing area of the UFR.
1. Purge air from the
system by opening the
taps in the house and
check again.
2. At more than 30 liters per
hour, the UFR stops
working, so there is no
problem.
3. Remove the UFR from
the line and clean out the
sealant.
Leak between the two parts
of the UFR The UFR has opened up and
the O-ring no longer seals. Tighten the two parts of the
UFR, open the water
pressure again, and check
for leaks.
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