ET Hydrogen L/350, Operatinginstructions And Maintenance

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the flame off and the
power control set at the
maximum value.
3. Unplug the welder and
touch immediately the
body of the two rectifier
diodes.
4. The temperature of the
faulty diode is lower than
that of the other diode.
How to replace the faulty
diode:
Spread silicone grease all over
the contacts surface of the new
diode, mount it and tighten the
stop nut underneath using
dynamometric wrench set from
0,25 to 0,32 Kgm.
5) When starting the
machine the fuse blows
out (Fig. 5 # 49). - Faulty Power circuit
board.
- One of the rectifier diode
is short- circuited.
- Short- circuit inside the
tank (Fig. 5 # 46), due to
accidental introduction of
a metal object.
- Short- circuit of the tank
cover (Fig. 5 # 43) with
the tank, due to over
compression of the cover
“OR” (Fig. 5 # 45).
Substitute the power circuit bard
How to spot the short- circuit
diode:
1. Disconnect the terminals
of the two diodes (Fig. 5
# 27) from the cooper flat
conductors.
2.
Using an OHM meter (at
OHM 1) measure the
resistance between the
body and the diode,
nominal value of 600-
2000 OHM. The
defective diode, gives a
very low value even if
you invert the OHM
Meter points.
3. Replace the faulty diode.
- The power transformer
(Fig. 5 # 39) is short-
circuit.
- The fan motor (Fig. 5 #
29) is short- circuited.
- There is a leakage in
the electric circuit.
1.
Empty the tank (Fig. 5 #
46) and dry
accordingly, verify that
the anode in (Fig. 5 #
43) and that it is
isolated from the
cathode (Fig. 5 # 46).
2. Dismount the anode
(Fig. 5, and remove the
metallic object causing
the short- circuit.
3.
Verify that the O Ring
in (Fig. 5 # 45) is
mounted correctly and
that the isolators (Fig. 5
# 38) are inserted in
such a way that the