MAN. PS 254 EN – Ind. 2 17
2.3.4. Connection of a liquid cooled
closed chamber welding head
This is the case for type K and MW Astro Arc
Polysoude closed welding heads.
! Connection of the electrode current
cable
Connect the current cable on the "-" terminal
with the quick connector, locking it by a short
rotation to the right.
! Connection of the current return cable
Connect the current return conductor cable to
the "+" terminal with the quick connector,
locking it by a short rotation to the right. This
cable is indicated red.
! Connection of the rotation motor cable
Join the cable to the "Rotation" connector
(symbol ). Make sure that the securing ring
is tight otherwise the system may not function
correctly.
! Connection of the manual command
cable on the head (MW heads)
Connect the manual commands cable on the
FA 5 terminal (Fig. 2.12) on the connection
plate.
! Connection of the coolant circuit
Connection is made by 2 quick push type self
sealing couplings on the cooling unit RC 200
(symbols and ).
! Connection of the torch shielding gas
Connection is made with a quick disconnect
fitting situated at the connection panel of the
PS 254 (symbol
").
Fig. 2.8 : Connection of a liquid cooled
closed chamber welding head ( for
heads with integrated commands)
2.3.5. Connection of a wire feed unit
The wire feed unit is connected at the
connection panel of the PS 254
(symbol ). Make sure that the securing ring
is tight otherwise the system may not function
correctly.
Fig. 2.9 : Connection of a wire feed unit
Gas coupling
Torch rotation connection
Manual commands cable
Electrode connection
Workpiece connection
Water outlet
Water return