Tweco 175i Transtig - Manual (Page 70)

TRANSMIG 175i
POWER SOURCE PROBLEMS AND ROUTINE SERVICE REQUIREMENTS 5-4 Manual 0-5143
E. General Maintenance Checks
Welding equipment should be regularly checked by an accredited Cigweld Service Provider to ensure
that:
1. Flexible cord is of the multi-core tough rubber or plastic sheathed type of adequate rating, correctly
connected and in good condition.
2. Welding terminals are in suitable condition and are shrouded to prevent inadvertent contact or short
circuit.
3. The Welding System is clean internally, especially from metal filing, slag, and loose material.
F. Accessories
Accessory equipment, including output leads, electrode holders, torches, wire feeders and the like shall be
inspected at least monthly by a competent person to ensure that the equipment is in a safe and serviceable
condition. All unsafe accessories shall not be used.
G. Repairs
If any parts are damaged for any reason, it is recommended that replacement be performed by an ac-
credited Cigweld Service Provider.
Power Source Calibration
A. Schedule
Output testing of all Cigweld Inverter Power Sources and applicable accessories shall be conducted at regular
intervals to ensure they fall within specified levels. Calibration intervals shall be as outlined below -
1. For transportable equipment, at least once every 3 months; and
2. For fixed equipment, at least once every 12 months.
If equipment is to be used in a hazardous location or environments with a high risk of electrocution as
outlined in AS 1674.2 - 2007, then the above tests should be carried out prior to entering this location.
B. Calibration Requirements
Where applicable, the tests outlined in Table 6-3 below shall be conducted by an accredited CIGWELD
service agent.
Testing Requirements
Output current (A) to be checked to ensure it falls within applicable Cigweld power source specifications
Output Voltage (V) to be checked to ensure it falls within applicable Cigweld power source specifications
Motor Speed (RPM) of wire drive motors to be checked to ensure it falls within required Cigweld power
source / wire feeder specifications
Accuracy of digital meters to be checked to ensure it falls within applicable Cigweld power source specifi-
cations
Table 5-4: Calibration Parameters
Periodic calibration of other parameters such as timing functions are not required unless a specific fault
has been identified.
C. Calibration Equipment
All equipment used for Power Source calibration shall be in proper working condition and be suitable for
conducting the measurement in question. Only test equipment with valid calibration certificates (NATA
certified laboratories) shall be utilized.