Tweco 42 CutMaster Service Manual - Manual (Page 11)

GENERAL INFORMATION CUTMASTER 42
Manual 0-5171 1-5 General information
• Have only qualified persons remove panels, covers, or guards
for maintenance as necessary.
• Keep hands, hair, loose clothing, and tools away from moving
parts.
• Reinstall panels, covers, or guards when maintenance is finished
and before reconnecting input power.
WARNING
MAGNETIC FIELDS can affect Implanted Medical De-
vices.
• Wearers of Pacemakers and other Implanted Medical Devices
should keep away from servicing areas until consulting their
doctor and the device manufacturer.
WARNING
OVERUSE can cause OVERHEATING.
• Allow cooling period; follow rated duty cycle.
• Reduce current or reduce duty cycle before starting to cut again.
• Do not block or filter airflow to unit.
WARNING
H.F. RADIATION can cause interference.
• High-frequency (H.F.) can interfere with radio navigation, safety
services, computers, and communications equipment.
• Have only qualified persons familiar with electronic equipment
install, test, and service H.F. producing units.
• The user is responsible for having a qualified electrician
promptly correct any interference problem resulting from the
installation.
• If notified by the FCC about interference, stop using the equip-
ment at once.
• Have the installation regularly checked and maintained.
• Keep high-frequency source doors and panels tightly shut, keep
spark gaps at correct setting, and use grounding and shielding
to minimize the possibility of interference.
!
WARNING
READ INSTRUCTIONS.
• Use Testing Booklet (Part No. 150 853) when servicing this unit.
• Consult the Owner’s Manual for cutting safety precautions.
• Use only genuine replacement parts from the manufacturer.
1.05 EMF Information
Considerations About Cutting And The Effects Of Low Frequency
Electric And Magnetic Fields
Cutting current, as it flows through cutting cables, will cause electro-
magnetic fields. There has been and still is some concern about such
fields. However, after examining more than 500 studies spanning 17
years of research, a special blue ribbon committee of the National
Research Council concluded that: “The body of evidence, in the com-
mittee’s judgment, has not demonstrated that exposure to power-
frequency electric and magnetic fields is a human-health hazard.”
However, studies are still going forth and evidence continues to be
examined. Until the final conclusions of the research are reached, you
may wish to minimize your exposure to electromagnetic fields when
welding or cutting.
To reduce magnetic fields in the workplace, use the following pro-
cedures:
1. Keep cables close together by twisting or taping them, or using a
cable cover.
2. Arrange cables to one side and away from the operator.
3. Do not coil or drape cables around your body.
4. Keep cutting power source and cables as far away from operator
as practical.
5. Connect work clamp to workpiece as close to the weld as possible.
About Implanted Medical Devices:
Implanted Medical Device wearers should consult their doctor and
the device manufacturer before performing or going near arc welding,
spot welding, gouging, plasma arc cutting, or induction heating opera-
tions. If cleared by your doctor, then following the above procedures
is recommended.