CEBORA S.p.A.
35
3.4.5
- 39 - Nozzle current transducer reading error.
NOZZLE CURRENT TRANSDUCER TEST.
Correct?
Settings board (54), connector J1, terminals 1(+) – 3(-) = approximately 0 Vdc, with Power
Source powered without delivering current.
YES
NO
♦
Check the wiring between J1 settings board (54) and J2 pilot arc board (58).
♦
With Power Source off, temporarily disconnect the connector J1 from settings
board (54) and check the resistance between terminals 1 and 3 of J1 on settings
board (54). Correct value = approximately 22 Kohm. If incorrect, replace settings
board (54).
♦
Check supply voltages of the pilot arc current transducer by performing the
NOZZLE CURRENT TRANSDUCER POWER SUPPLY TEST, in par. 3.3.10.
♦
Replace the pilot arc board (58).
NOZZLE CURRENT SIGNAL TEST.
Correct?
Control board (38), connector J7, terminals 2(+) – 1(-) = approximately 0 Vdc, with Power
Source powered without delivering current.
YES
NO
♦
Check the wiring between J7 control board (38) and J3 settings board (54).
♦
With Power Source off, temporarily disconnect the connector J7 from control
board (38) and check the resistance between the terminals 2-1 of J7 on control
board (38). Correct value = >1 Mohm. If incorrect, replace control board (38).
♦
Replace the settings board (54).
♦
Replace the control board (38).
3.4.6
- 40 - Hazardous voltage.
HAZARDOUS VOLTAGE PRESENCE TEST.
Correct?
Torch board (42), connector J8, terminals 4(+) - 1(-) = approximately 0 Vdc, with Power
Source powered, without start command (approxi280 Vdc, with pilot arc off, or
approxi150 - +190 Vdc, with pilot arc lit, after pressing the start command).
YES
NO
♦
Check the wiring between connector J8 of torch board (42) and terminal (53)(-) of
the Power Source, and output terminal (+) of the Power Source (Gifas).
♦
Make sure output voltage is being generated, performing if necessary the tests in
par. 3.3.6..
3.302.218
9/8/2006
