Tweco 42 CutMaster Service Manual - Manual (Page 10)

CUTMASTER 42 GENERAL INFORMATION
General information 1-4 Manual 0-5171
1.04 Servicing Hazards
!
WARNING
The symbols shown below are used throughout this
manual to call attention to and identify possible hazards.
When you see the symbol, watch out, and follow the
related instructions to avoid the hazard.
Only qualified persons should test, maintain, and repair
this unit.
Only qualified persons should test, maintain, and repair
this unit.
WARNING
ELECTRIC SHOCK can kill.
• Do not touch live electrical parts.
• Turn Off cutting power source and disconnect and lockout input
power using line disconnect switch, circuit breakers, or by
removing plug from receptacle, or stop engine before servicing
unless the procedure specifically requires an energized unit.
• Insulate yourself from ground by standing or working on dry
insulating mats big enough to prevent contact with the ground.
• Do not leave live unit unattended.
• If this procedure requires and energized unit, have only person-
nel familiar with and following standard safety practices do the
job.
• When testing a live unit, use the one-hand method. Do not put
both hands inside unit. Keep one hand free.
• Disconnect input power conductors from de-energized supply
line BEFORE moving a cutting power source.
SIGNIFICANT DC VOLTAGE exists after removal of input power
on inverters.
• Turn Off inverters, disconnect input power, and discharge input
capacitors according to instructions in Troubleshooting Section
before touching any parts.
WARNING
STATIC (ESD) can damage PC boards.
• Put on grounded wrist strap BEFORE handling boards or parts.
• Use proper static-proof bags and boxes to store, move, or ship
PC boards.
WARNING
FIRE OR EXPLOSION hazard.
• Do not place unit on, over, or near combustible surfaces.
• Do not service unit near flammables.
WARNING
FLYING METAL or DIRT can injure eyes.
• Wear safety glasses with side shields or face shield during
servicing.
• Be careful not to short metal tools, parts, or wires together
during testing and servicing.
WARNING
HOT PARTS can cause sever burns.
• Do not touch hot parts bare handed.
• Allow cooling period before working on equipment.
• To handle not parts, use proper tools and/or wear heavy, insu-
lated welding gloves and clothing to prevent burns.
WARNING
EXPLODING PARTS can cause injury.
• Failed parts can explode or cause other parts to explode when
power is applied to inverters.
• Always wear a face shield and long sleeves when servicing
inverters.
WARNING
SHOCK HAZARD from testing.
• Turn Off cutting power source or stop engine before making or
changing meter lead connections.
• Use at least one meter lead that has a self-retaining spring clip
such as an alligator clip.
• Read instructions for test equipment.
WARNING
FALLING UNIT can cause injury.
• Use lifting eye to lift unit only, NOT running gear, gas cylinders,
or any other accessories.
• Use equipment of adequate capacity to lift and support unit.
• If using lift forks to move unit, be sure forks are long enough
to extend beyond opposite side of unit.
WARNING
MOVING PARTS can cause injury,
• Keep away from moving parts such as fans.
• Keep away from pinch points such as drive rolls.