OPERATING & MAINTENANCE INSTRUCTION MANUAL
MODELS 427A (R-1), 428A (R-2), AND 429A (R-3) WELD HEADS
REV. AB
MODEL 514 TUBEMASTER OR 515/516 PIPEMASTER POWER SUPPLY
8
THESE DOCUMENTS, AND THE CONTAINED INFORMATION HEREIN, ARE PROPRIETARY AND ARE NOT TO BE REPRODUCED, USED OR DISCLOSED TO
OTHERS FOR MANUFACTURE OR FOR ANY OTHER PURPOSE, EXCEPT AS SPECIFICALLY AUTHORIZED, IN WRITING, BY MAGNATECH, LLC
Some fume sources are:
4.5.1
Weldments
Metals containing lead, cadmium, zinc, mercury and beryllium can produce harmful toxic fumes when
welded or cut. Arc welding of stainless steels can produce hazardous fumes. Adequate local exhaust
ventilation must be used for the operator and persons in the area.
4.5.2
Coated Weldments
Do not weld on pipes or tubes that have coatings that emit toxic fumes when heated.
4.5.3
Vessels that have contained toxic materials
Vapors from chlorinated solvents can be decomposed by the arc to form the highly toxic gas called
PHOSGENE or other damaging products. The ultraviolet radiant energy of the arc can also decompose
trichloroethylene and perchloroethylene vapors to form PHOSGENE. Do not weld or cut unless such
containers have been thoroughly cleaned following AWS F4.1,
Safe Practices for The Preparation Of
Containers and Piping for Welding and Cutting
.
4.5.4
Welding Area
Do not weld in locations close to chlorinated vapors coming from degreasing, cleaning or spraying
operations. The heat and rays from the arc react with the vapors to form highly toxic PHOSGENE. Work in
a confined space only if it is being adequately ventilated, and if ventilation is not adequate, wear an air-
supplied respirator (see AWS F3.2M/F3.2,
Ventilation Guide for Weld Fume
).
4.6
Compressed Gas Cylinder Handling
Follow precautions below and those outlined in CGA Standard P-1,
Safe Handling of Compressed Gases in
Cylinders
.
4.6.1
Cylinders
Handle carefully to prevent damage. Keep away from welding cables or other electrical circuits. Use only
cylinders with name of gas marked on them; DO NOT rely on color identification. Close valves on empties
and return promptly. Secure cylinders so they cannot be knocked over. Keep temperature below 55º C
(130º F).
4.6.2
Pressure Regulators
Use the correct regulator for the gas and cylinder being used. Remove any suspected faulty regulator and
return to manufacturer's service center for repair.
4.7
Equipment Warning Labels
Inspect all precautionary labels on the equipment.
4.8
Inspection
Frequently inspect all components for damage.
Check the Controller, Head and power source frequently for damage, and immediately replace any
components that are not in perfect condition.
Do not make alterations or modifications to the Weld Head, Controller, or power supply without first getting
permission from the manufacturer.
