Mounting; Place Of Mounting; Preparation For The Mounting; Mounting Of The Meter Into The Pipeline, Pressure Check - aqua metro CONTOIL VZO 4 Instructions De Montage Et Mode D'emploi

Mounting

Place of mounting

Easy access for reading the meter and controlling ancillary equipment is essential.
• Observe the operating temperature range (-10 °C...60 °C) and plant conception points.
Warning: Electromagnetically effects are to be avoided (e.g., magnetic valve of the burner). A basic rule is a security distance from the
electromagnetically source of about 40 cm.

Preparation for the mounting

Check meters and mounting material. Compare the data of the meter with the expected maximum conditions in the installation. They may
not exceed the meter data:
• Flow rate max. (Q max. l/h)
• Service pressure max. (PN bar)
• Temperature max. (T)
• Threaded connections and seals (gaskets)
• Fixations for the meter
• Resistance to measuring liquid and temperature.
Note: Rinse the installation properly.
Only in case of modifying an existing plant:
• Rinse previously the installation and put it out of service.
• Close the valves shutting the insertion section.
• Make sure that a starting-up by other persons is impossible while mounting.
• When handling matters hazardous to people protect absolutely eyes, skin and clothes.
• Place a collecting trough under the installation. No chemicals, oils or other matter dangerous to the environment may reach neither the
water nor the soil.
• Cut the pipeline and prepare it for the insert of the flow meter.
• In case of welding, cutting and grinding pay attention to the risk of fire/deflagration. Remove inflammable matter and liquids from the
place of operation.
• Prepare the pipe section for the length prescribed for the measuring unit (see dimensional sketches).
• When using copper- or thinwalled steel-tubes fasten the meter additionally.
• Install the strainer/pre-filter, if necessary adistance piece.
• Put the installation into operation.
• Open the shut valves slowly.
• Proceed to a pressure and tightness check.
• Rinse the installation properly.
• Remove the pressure and put the installation out of service.

Mounting of the meter into the pipeline, pressure check

When mounting the meter into the pipeline pay attention to point "Preparation for the mounting".
• Remove protection plugs on the meter.
• Insert the meter into the pipeline in the prescribed position and flow direction.
• Fasten the meter.
• To connect the meter use only flat sealing cylindrical threaded connections type Whitworth.
DN 4 = G 1/8"
DN 8 = G 1/4"
• Tighten the threaded connections. Tightening torque max. 7 Nm.
• If another pressure test is done after mounting the meter, following pressure is admitted for a short period:
Nominal pressure(PN) test load
16 bar 25 bar
25 bar 40 bar
ISO 228-1
DIN 2353
SNV 218900
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