ABB AP102 Manuale di istruzioni - Pagina 7

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ABB AP102 Manuale di istruzioni
2.2 Water Supply for Water Wash Systems –
Fig. 2.4 and 2.5
Important Note. Installation must only be carried
out in accordance with the local water authority and
council bylaws.
Caution. The maximum water pressure at the
electrode should not exceed 4 bar. At NO time should the
sample pressure be allowed to exceed that of the water
wash water supply. Fit a non return valve if this possibility
exists.
Information. As all quick-fit connectors used in
Water Wash systems incorporate cutoff valves, tubes
may subsequently be disconnected on operational
equipment without sample loss or water wash discharge.
Suitable Solenoid Valve (user supplied)
Connect a suitable length of
solenoid valve. This tube terminates at the electrode installation point.
2
1 /4
in. i.d. p.v.c. tube to the outlet of the
Fig. 2.4 Installing the Water Wash Water Supply
Liquid
Junction
Water Wash
Nozzle
Fig. 2.5 Location of Water Wash Nozzle
Note. For optimum performance of the Water Wash
function in flow systems, the sample pressure should be
at least 2 bars lower than that of the water wash water
supply.
The water supply for the water wash system must come from a
suitable supply via a solenoid valve. The general specification
for the solenoid valve is:
Brass body: 2/2, NC
Orifice size: 3.0 / 4.0 mm
1
1
Port size:
/
" –
/
" BSP
8
4
Pressure:
0 to 6 bar
Coil:
110/115 V a.c. or 230/240 V a.c. 50/60 Hz
Before fitting the electrode cartridge system, install the water
supply as shown in Fig. 2.3.
Note. See Fig. 2.4 for recommended tubing.
1
Install a suitable solenoid valve to
the mains water supply feed.
Note. It is advisable to use a
suitable hose clamp.
Sensor
2 INSTALLATION...
To water supply – see
Important Note and
Caution, above.
3
P u s h
t h e
q u i c k - f i t
connector supplied, onto
the free end of the tube.
Note that the quick-fit
connector incorporates a
cut-off valve.
5