CEBORA S.p.A.
10
3.3
- Troubleshooting.
WARNINGS
ANY INTERNAL INSPECTION OR REPAIRS MUST BE CARRIED OUT BY QUALIFIED
PERSONNEL.
UNPLUG THE POWER SOURCE FROM THE MAINS BEFORE REMOVING THE
PROTECTIVE COVERS AND ACCESSING THE INTERNAL PARTS.
NOTE
The problems the machine may suffer (symptoms) are indicated in
boldface
.
Operations preceded by this symbol refer to situations that the operator must check into
(causes).
♦
Operations preceded by this symbol refer to actions that the operator must carry out to solve
problems (solutions).
3.3.1
- The power source does not start, control panel off.
MAINS SUITABILITY TEST.
Correct?
No voltage for mains protection.
NO
YES
♦
Eliminate any short-circuits or insulation losses on the connections between
power cable, switch (15), terminal board (52), transformer (46) primary winding,
services transformer (4), fan (45) and socket (12) on rear panel.
♦
Make sure wiring between mains cable, switch (15) and transformer (46) primary
winding, with particular care to the connections that perform mains voltage
adjustment and between transformer (46) secondary winding and terminals “A” of
scr group (47) and “C8” of switch AC/DC (30). If you find damage connections
restore them, or devices in short-circuit replace them.
♦
Mains not suitable to power the power source (ex.: insufficient installed power).
MAINS CONNECTION TEST.
Correct?
Switch (15), terminals U and W = 230 Vac with both mains at 208 Vac or 230 Vac.
YES
NO
♦
Check power cable and plug and replace if necessary.
♦
Make sure wiring between mains cable, switch (15) and transformer (46) primary
winding, with particular care to the connections that perform mains voltage
adjustment and between transformer (46) secondary winding and terminals “A” of
scr group (47) and “C8” of switch AC/DC (30). If you find damage connections
restore them, or devices in short-circuit replace them.
♦
Check operation of the switch (15), making sure the contacts close in the sequence
shown in the table in the electrical diagram of par. 5.1.
♦
Check mains voltage conditions.
3.302.221
15/01/07
Summary of Contents for TIG 250 AC-DC
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