Delabie NT 760, Руководство пользователя

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REMEMBER
• Our valves must be installed by professional installers
in accordance with current regulations and recommendations
in your country, and the specifications of the fluid engineer.
• Sizing the pipes correctly will avoid problems of flow rate,
pressure loss and water hammer (see calculation table in our brochure
and online at www.delabie.com).
• Protect the installation with filters, water hammer absorbers
and pressure reducers to reduce the frequency of maintenance
(recommended pressure from 1 to 5 bar maximum).
•
Install stopcocks
close to the valve to facilitate maintenance.
• The pipework, filters, non-return valves, stopcocks, bib taps, cartridge
and all sanitary fittings should be checked at least once a year,
and more frequently if necessary.
ADJUSTING THE FLOW RATE (FIG. D)
• The flow rate can be adjusted without shutting off the water supply
or removing the mechanism. Adjust the flow rate via the adjustment
screw on the stopcock
a
.
MAINTENANCE
• Impurities in the pipe work may cause the valve to malfunction.
To remove the mechanism, shut-off the water supply and unscrew
the cartridge using a 23mm spanner for exposed models, or a 24mm
spanner for recessed or cross wall models (
Fig. G
).
Inaccurate flush time or continuous flush (Fig. H):
• Clean the inside of the delay case
q
using a dry cloth,
and the calibrated timing groove
p
using a non-metallic point.
• Check the lip seal washer
o
and the seating O ring
n
.
• Replace the cartridge and reconnect the water supply.
Continuous dripping or a small leak (Fig. H):
• Clean the valve seat and check/clean the seating O ring n ,
Replace if necessary.
• Replace the cartridge and reconnect the water supply.
Leaking from the push-button:
• Clean the lip seal washer on the spindle and replace if necessary.
Water discharge at the back-flow prevention device:
• Reduce the dynamic pressure.
EN