Cebora 965, Руководство по обслуживанию, Страница: 11 / 24

CEBORA S.p.A.
11
3.3.4 - No gas flows from the torch.
PILOT ARC SOLENOID VALVE EL1 (34) TEST.
Correct?
‰
Solenoid valve EL1 (34) terminals = approximately 230 Vac, with torch button pressed. The
solenoid valve opening time also depends on the post-gas time.
YES
NO
♦
Check the wiring between solenoid valve EL1 (34) and terminals 4 and 10 of J7
on control board (6).
♦
With power source off, check the resistance between the terminals of solenoid
valve EL1 (34) = approximately 2500 ohm. If 0 ohm (short-circuit), replace
solenoid valve EL1 (34) and control board (6).
♦
Perform the CONTROL BOARD (6) POWER SUPPLY TEST, par. 3.3.1.
♦
Replace control board (6).
♦
With power source off, check the resistance between the terminals of solenoid valve EL1 (34)
= approximately 2500 ohm. If >Mohm (winding broken) replace solenoid valve EL1 (34).
♦
Make sure there are no occlusions in the gas hoses of the power source.
♦
Check the presence of the gas at the inlet fitting (B) and that the pressure and flow rate in the
intake conduit meet the specification values (see Instruction Manual).
♦
Make sure that the pressure regulator (E) and pressure gauge (F) are working properly.
♦
Make sure that the threaded part of the air fitting (B) inserted in the pressure regulator (E) is
no more than 6 - 8 mm (1/4” - 5/16”) long, to avoid any possible malfunction of the regulator
(E).
♦
Replace solenoid valve EL1 (34).
3.302.173 28/07/04