Fabricator 211i problems/service – Tweco 211i Thermal Arc Fabricator User Manual

Page 86

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FABRICATOR 211i

PROBLEMS/SERVICE

PROBLEMS AND ROUTINE SERVICE

5-4

Manual 0-5157

Power Source Calibration

A. Schedule

Output testing of all Thermal Arc 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.

B. Calibration Requirements

Where applicable, the tests outlined in Table 5-3 below shall be conducted by an accredited Thermal Arc

service agent.

Testing Requirements

Output current (A) to be checked to ensure it falls within applicable Thermal Arc power source specifications
Output Voltage (V) to be checked to ensure it falls within applicable Thermal Arc power source specifications
Motor Speed (RPM) of wire drive motors to be checked to ensure it falls within required Thermal Arc power

source / wire feeder specifications
Accuracy of digital meters to be checked to ensure it falls within applicable Thermal Arc power source

specifications

Table 5-3: 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 certi-

fied laboratories) shall be utilized.

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