GALAGAR GPS 3000 C Manual Técnico De Instrucciones página 25

5. ANOMALIES. PROBABLE CAUSES. POSSIBLE SOLUTIONS.
SYMPTOM. ANOMALY.
GENERAL PROBLEM.
NOTHING WORKS.
LIMITER TRIPS
IT CAUSES NOISE
IF THE GREEN INDICATOR
LD1 IS ON THE APPLIANCE
DOES NOT WELD
THE ELECTRODE BURNS IN
TIG WELDING
THE EQUIPMENT HEATS UP
ABNORMALLY.
THE THERMAL PROTECTION
ACTIVATES QUICKLY.
ALTHOUGH THE MACHINE
IS CONNECTED AND WITH
THE SWITCH LD1 ON,
THERE IS NO REACTION
WHEN PRESSED
WHEN THE SHIELDING GAS
IS RELEASED IT CONTINUES
FLOWING.
WHEN FINISHING
WELDING THE WIRE
REMAINS STUCK TO THE
TORCH CONTACT TUBE.
WHEN FINISHING
WELDING THE FINAL WIRE
LENGTH IS VERY GREAT.
THE EQUIPMENT DOES NOT
WELD CORRECTLY IN
MIG/MAG MODE.
"IT ADJUSTS BADLY"
GPS 3000/4000 C
PROBABLE CAUSE.
The machine has no voltage in one or all its
vital elements.
Magnetothermal switch has low gauge for
the case. There may be a short circuit, which
is what causes the limiter to trip.
Loose metal casing.
Defective electrical connections.
Damaged or poorly attached fan.
Active protection system. Amber light "LD2"
on.
Excessive welding intensity for a certain
electrode.
Use of reverse polarity.
Type of electrode
Lack of protection gas.
The equipment is positioned so that it pre-
vents correct ventilation.
The fan does not work.
The equipment is located in a very hot
environment.
There is a loose connection inside the
equipment.
Failure of the pistol switch which does not
make perfect contact.
There is impurity in the inside chamber of
the solenoid valve which prevents the piston
from closing completely.
The configurated value of post-flow is very
high.
The configurated value of burn-back is very
high.
The configurated value of burn-back is too
low.
The torch is withdrawn immediately when
torch pushbutton is no longer pressed.
Low effective welding voltage. Output wave
not correct.
The diameter of used wire does not match to
selected program.
The welding wire has a mechanical re-
sistance at the outlet, which prevents it from
having a regular speed.
Selection of wrong synergic program.
Consumable badly fit or in bad condition.
Unsuitable pressure of tightening knob in
draving operation.
POSSIBLE SOLUTION.
1. Make sure there is voltage at the entry to the machine;
if not the intake must be changed. It is advisable to see if
any magnetothermal has "blown".
2. Check the power source fuses situated on the central
panel. (See Spare parts Sheet)
3. The machine panels must be removed testing the
logical points of the electrical diagram.
Change the magnetothermal for another larger gauge
one. It is important for the magnetothermal switch to
have a characteristic slow type curve. In the event that the
electrical installation has limited power, the welding work
must be tested at lower current levels.
Review and screw casing.
Correctly tighten the connections.
Examine the fan.
Equipment overheated, wait until the equipment cools
down.
Supply voltage outside rated margin. Change supply tap.
Decrease welding current or change electrode for one
with larger diameter.
Place electrode to negative pole.
Change the electrode type.
Regulate at an appropriate flow.
Place the equipment in an area where the air is constant-
ly replaced.
Replace the fan.
Avoid positioning where there is direct exposure to the
sun.
Review the power electrical connections.
Change the gun microswitch.
Dismantle and clean the electrovalve.
Change in the settings menu the post-flow time value
TPS.
Change in the settings menu the value of the burn-back
time correction.
Change in the settings menu the value of the burn-back
time correction.
The final wire length control system requires the welding
torch not to be immediately withdrawn when the torch
pushbutton is no longer pressed.
Check that there is not a phase failure in the supply
power.
Check that the electrical contact elements of the welding
circuit are correct: Welding mass, rusty or very dirty
surfaces, contact nozzle with greater diameter than the
wire, etc.
Test the electrical diagram of the power source.
Input and output voltages to the rectifier.
Verify the use of the appropriate diameter and replace
the erroneous one.
Examine the welding gun. Blow the inside (cable) with
compressed air.
Verify the program selection criteria : filler material, gas
mixture and wire diameter.
Review the consumable adjustment and replace if faulty.
Adjust the pressure until the problem disappears.
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