Upgrades; Power Source Art. 952 With Enhanced Pilot Arc Lighting; Description Of Upgrade; Operating Description - Cebora PLASMA PROF 162 Service Manual

CEBORA S.p.A.

6 - UPGRADES

6.1 - Power source art. 952 with enhanced pilot arc lighting.

6.1.1 - Description of upgrade.

Valid for machines with serial N° A67063 and later.
The purpose of this upgrade is a variation to improve pilot arc lighting.
This variation, shown in the diagram in par. 6.1.4., consists of:
− Replacing the HF transformer (69) with an autotransformer HF.
− Addition of the RC board (80).
− Upgrade of the software program to version n° P03, shown on display X during the self-
test phase (see fig. 3.2.1).

6.1.2 - Operating description.

The board (80), taking the signal from the terminals of the remote switch (18), inserts a
battery of capacitors between the common resistance point (74) with solenoid (13) and the
common choke point (43) with HF autotransformer (69), in order to provide a greater energy
reserve for lighting the pilot arc.
The battery of capacitors on the RC board (80) remains inserted only for the duration of the
pilot arc, thus for as long as the remote switch (18) remains powered.
In addition, the autotransformer (69) offers a faster response to the high frequency, thus
ensuring better conditions for lighting the pilot arc.
The change to the software program was necessary to re-synchronize the command signals
with the signals of any errors detected in the power source circuits.

6.1.3 - RC board code 5.602.076.

6.1.4 - Power source art. 952 + RC board upgrade: see file SCHE952-A.pdf enclosed at
the end of the manual.
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03/08/00