Tweco 170Ti Transtig - Manual (Page 30)

TRANSTIG 170Ti
INSTALLATION, OPERATION AND SETUP 3-12 Manual 0-5279
In both 2T and 4T modes, if the stick electrode is not touched to the work piece within three seconds,
the welding output will be inhibited. Release the trigger to reset, and press the trigger again to reactivate
the VRD.
Note that if the Dead Man Switch function is disabled, 2T and 4T are not available in STICK mode.
Information on how to disable the Dead Man Switch function is available from Cigweld Technical Customer
Care on +61 3 9474 7400
!
WARNING
Approval from a mine site manager, or work site manager must be obtained in writing before the
Dead Man Switch function is disabled. Only a suitably qualified electrical tradesperson or Cigweld
Service Provider should make any changes to the Power Source.
!
WARNING
The Power Source must be turned off and unplugged from the mains supply before the Dead Man
Switch function is changed
!
WARNING
If 4T operation is selected when using the Dead Man Switch mode, the use of an observer is
recommended.
10. Process Selection Control
The process selection control is used to select the desired welding mode. Three modes are available, GTAW
(HF TIG), GTAW (Lift TIG) and (MMAW (Stick) modes. Refer to section 3.08 for GTAW (TIG) set-up details
or section 3.10 for MMAW (stick) set-up details.
Note that when the unit is powered on the mode selection control will automatically default to LIFT TIG/HF
TIG mode. This is necessary so as to prevent inadvertent arcing should an electrode holder be connected
to the unit and mistakenly be in contact with the work piece during power up.
11. Thermal Overload Indicator
This welding power source is protected by a self resetting thermostat. The indicator will illuminate if the
duty cycle of the power source has been exceeded. Should the thermal overload indicator illuminate the
output of the power source will be disabled. Once the power source cools down this light will go OFF and
the over temperature condition will automatically reset. Note that the mains power switch should remain
in the on position such that the fan continues to operate thus allowing the unit to cool sufficiently. Do not
switch the unit off should a thermal overload condition be present.
The display will also show error code E-- in the event of an over current or over temperature.
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