Resistance Welder MULTISPOT MI-100
Installation
26
5.5 Connecting
the
pneumatics
Fig.24: Connecting compressed-air supply
1.
Take the supply line from the pneumatic grid of the plant and
plug it on to the welder (Fig.24).
2.
The plant’s pneumatic mains must provide about 8 bar
(116 Psi) input pressure to the welder.
NOTE!
8 bar (116 Psi) input pressure generate a contact
force of the electrodes of 3.5 kN (787 lb f) approx.
To adjust the contact force of the electrodes,
proceed as described below.
Fig.25: Pressure gauge and pressure
regulator
3.
Check the pressure supplied at the pressure gauge (Fig.25).
If necessary, use the pressure regulator (Fig.25) to set the
pressure as required (depending on welding program and
manufacturer’s specs).
Turn the regulator in the “+” direction to increase the input
pressure.
(
Max. admissible: 10 bar / 145 Psi
)
Turn the regulator in the “-“ direction to decrease the input
pressure.
(
Min. admissible: 6 bar / 87 Psi
)
4.
When decreasing the input pressure, actuate the pliers from
time to time to let the air escape.
CAUTION
Improper pressure of compressed air may
damage property.
Low pressure reduces the contact force of the
electrodes which, in turn, increases wear of the
electrodes. High pressure, on the other hand, may
damage the spot welding pliers.
Therefore:
Check the pressure gauge before you switch
on the welder. Compare to the parameters of
the welding program selected.
–
Maintain the pressure between 6 and 10 bar
(87 and 145 Psi).
5.
Push in the regulator to set and lock the selected value.
