21
MALFUNCTION
CAUSE
REMEDY
1) The pointer of the gas
supply
indicator (Fig.1 # 20)
returns back to zero.
-
The burner tip diameter
is insufficient.
-
Obstructions due to
scale formation.
-
Change the burner tip
–
see Table 2.
-
Clean the apparatus
See sec. 5.2
2)
The flame is faint and
elongated, its contours
blurred. The flame
heating power is
insufficient.
-
The electrolyte has
been contaminated by
foreign matter, such as
methyl alcohol, oil,
grease, etc…
-
Replace the electrolyte
(sec. 5.10.5).
-
Check the tightness of
the valve (sec.5.10.3).
-
Replace the valve, if
necessary (sec. 5.10.4).
3)
The flame cannot be
lighted or is very short.
Obstructions due to scales or
there is a gas leakage in the
pneumatic channels
(see par. 5.2).
Gas leakage: Do not
depressurize the machine and
remove the power cable.
Start with a brush, spread soapy
water all over the fitting and
Booster Tank, below the Booster
holder (Fig.5 # 7, 9, 17), on the
torch hose fittings and torch
cones (Fig.1 # 10, 15, 16). If you
see bubbles coming up, it means
that there is a gas leakage.
Replace the safety cap if
necessary.
ATTENTION: the same
operation can be performed on
the fittings and hoses inside
the welder. In this case unplug
the welder, for there are live
components (230 or 115 Volt
AC) inside.
4)
The flame is shortened
even when the power
control is set at
maximum value.
-
The electrolyte has been
completed or is contaminated
with substances.(Section 5.10.5).
-
The power circuit board is
faulty.
- One of the two rectifier diodes
(Fig. 5 # 27) is not conducting.
-
Change the electrolyte
solution.
-
Substitute the power
circuit board (Fig.5 # 19).
How to spot the faulty diode:
1. Remove the cover (Fig.5
# 32) from the frame.
2. Start the welder and let it
work for 5-6 minutes with
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