Car-O-Liner Group AB
CTR12000
50
41644, EN - rev. 2, 2012-09
Fault
Possible cause
Solution
Gun is closed after the start button has
been pressed, but there is no welding
current
The current tong has not been calibrated yet
(CHECK-EL), LEDs Tool and Electrode flash.
Select CHECK-EL and perform tong
calibration
Recovery phase for the mains fuse. LED
Fuse lights up.
Wait until recovery time has expired
Pending spot error that has not been
acknowledged. LED Spot error lights up.
Acknowledge the spot error by activating
the reset button “Q“
The condition of the electrodes must be
checked. LED Electrode lights up.
Switch off power source, check
electrode condition and replace, if
necessary
No start signal, the green LED right above the
keylock switch must light during the welding
procedure.
Check start pushbutton, control cable
and plug.
Pending error, the red LED right above the
keylock switch lights up. Error possibly
resulting from overheating, insufficient
pressure in the air circuit (<3bars), or
malfunction of the power section.
Let cool down the power source, check
compressed air and settings, switch the
power source off and on.
After CHECK-EL, the QS light permanently
shows RED or GREEN/YELLOW/RED and
the LED’s Tool/Electrode do not stop
flashing
Wrong spot gun, wrong gun arm or not
greased, worn electrode caps, electrode
holder not greased, interrupted measuring
lead.
Use the gun prescribed, grease the gun
arms and electrode holders with
conductive grease, replace electrode
caps, check measuring lead.
QS lights show RED or YELLOW/RED
after welding procedure and LED for spot
error lights up.
Poor contact between the sheets to be
welded and/or the electrodes.
Remove insulation layer, if necessary
create special program with suitably
adapted parameters.
Sheets are not close-lying.
Increase electrode squeeze pressure
The transition resistance of the sheets to be
welded does not correspond to the value
preset in the welding program.
Repeat the spot, if necessary, create
special program with suitably adapted
parameters
Welding time is outside the tolerance window. Repeat the spot, if material features are
not clear, create special programs with
suitably adapted parameters
Wrong program has been selected, adjusted
value for total material thickness is not
correct.
Correct settings and repeat the spot.
CHECK-EL has been performed with
unclean, worn electrode caps
Clean or replace electrode caps and
repeat CHECKEL.
LED- Electrode lights up or flashes
together with the LED Tool
Check the condition of the electrodes.
Switch off the power source, check
condition of electrodes and replace
them, if necessary
LED- Tool lights up and/or flashes together
with the LED Electrode
The current tong has not been calibrated yet
or a foreign tong has been installed.
Select CHECK-EL and perform tong
calibration or connect the correct tong
LED- Fuse lights up
Recovery phase of the primary fuse.
Wait until the recovery time has expired
Material thickness cannot be adjusted
while in the display mode
Turn keylock switch to EDIT.
Keylock switch must be turned to AUTO.
While in STANDARD mode, welding
current and time cannot be adjusted
Keylock switch is in position EDIT.
Keylock switch must be turned to AUTO.
Display is dark
Display is in stand-by mode.
Activate the rotary encoder.
Defective mains fuses.
Check fuses and replace, if necessary.
Electrode caps burn out
Insufficient cooling.
Check coolant level, cooling circuit, hose
connections and tube in the electrode
shank.