Cebora PLASMA PROF 166 Betriebsanleitung Seite 48

NOTE: the 3-pole terminal board at the top relates to the
service transformer.
In case of 230V three-phase power supply, put in short cir-
cuit also the first terminal on the bottom on the left with the
last one on the bottom on the right (see fig. 10b, 230V box)
using the cable supplied (fixed, by means of a fastener, on
the cover).
Fig. 13 b
Plasma Prof 166 HQC and Plasma Prof 255 HQC pow-
er sources
Make sure the power voltage corresponds to that shown
on the power source data plate.
The yellow-green lead of the power cable must be con-
nected to an efficient earth system (see diagram of Appen-
dix 5.2-Fig.27); the remaining leads must be connected to
the power supply line by means of a switch, possibly near
the cutting area to permit speedy switch-off in case of an
emergency. The capacity of the thermal magnetic switch
F
E
48
B
C
A
G
or fuses must be the same as the max appliance current
input. This is shown on the data plate, on the rear of the
machine, in correspondence to the U1 power voltage.
Any extensions must have a section suited for the max
power input.
• After performing this operation, proceed to make the
various connections (Fig. 11).
Fit the connection art. 1159, with relative cables, in torch
coupling G of the power sourceand fully tighten the 3 re-
tention screws. Tighten the black power cable to the ter-
minal B (-), fit the two safety leads in the terminal board C
and the red lead faston of the pilot arc in the relative lead
A with male faston.
Tighten the end of the earth lead in the clamp H (+) as
shown in figure 11. Also, connect the cooling water pipes
E and F, being careful to make sure the colours corre-
spond (E-red = hot water, return; F-blue = cold water,
supply), to the respective connection pipes Art. 1156.
Fit the other end of the connection art. 1159 in the HV19-1
unit (art. 464) as indicated in the part section of figure 12
[black power lead to clamp B (-) and red cable faston to
pilot arc in A (+)]:
The HV19-1 unit must be connected to the earth system
directly on the pantograph (by means of the 4 retention
screws shown in figure 6), in a position such as to permit
its opening.
With reference to Fig.13, connect the connections
art.1189 to the connectors B (relating to the gas console);
the connection the pantograph to the connector A;
A
Fig. 11
B
Fig. 12
A
C
H
B