VS-32-L
33
Fig. 4: Pressure reducer
including flow rate meter
8.5. Setting the quantity of gas
The
SV-32-L
strapping head comprises a plant for central gas supply, which in turn
comprises a pressure control station and a pressure reducer incl. flow rate meter.
The pressure control station including accessories can be obtained in two designs. The
operation of the head can be designed by means of a gas cylinder or a group of two
with a maximum feed pressure of 200 or 300 bar.
The closed circuit pressure (working pressure) has been controlled by the manufacturer
to 5 bar on the main pressure reducer. That pressure cannot be controlled on the
pressure reducer. In case of decreasing cylinder pressure the working pressure and
therefore the shield gas consumption remain constant.
The quantity of gas required for a welding operation should amount to
10 litres per
minute
. It is set on the flow rate meter via the second pressure reducing valve
(fig. 4)
.
That pressure reducer including flow rate meter should be mounted near the head of
the machine.
If the quantity of shield gas is too low (quantity of gas < 10 l/min), the weld metal bead
may be affected by pores.
Set the quantity of gas via the setscrew
of the pressure reducer.
Important:
For safety regulations, mounting
instructions and commissioning of the
central gas feed system see operating
instructions (Fa. Everwand & Fell
GmbH) attached.
All plant sectors must be kept free of oil and grease!
All mounting works deviating from the mounting instructions may
only be performed by an authorised specialised company or the
manufacturer. Otherwise, any manufacturer’s guarantee as well as
all claims within the scope of the product liability act will expire.
Caution!
Gas bottles are to be protected against dangerous heating up (over
50°C) by heating elements or open flames. Bottles at a well-
ventilated place store and against falling down secure.
B 13 GB 26/06