SECTION 8 − SAFETY PRECAUTIONS FOR SERVICING
Protect yourself and others from injury — read and follow these precautions.
8-1. Symbol Usage
DANGER! − Indicates a hazardous situation which, if not avoided, will result in death or serious injury. The possible hazards are shown in the adjoining symbols or explained in the text.
Indicates a hazardous situation which, if not avoided, could result in death or serious injury. The possible hazards are shown in the adjoining symbols or ex- plained in the text.
NOTICE − Indicates statements not related to personal injury.
.Indicates special instructions.
This group of symbols means Warning! Watch Out! ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards. Consult sym- bols and related instructions below for necessary actions to avoid the hazards.
8-2. Servicing Hazards
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 service, test, maintain, and re- pair this unit.
During servicing, keep everybody, especially children, away.
ELECTRIC SHOCK can kill.
DDo not touch live electrical parts.
DTurn Off induction heating power source and
disconnect and lockout input power using line disconnect switch, circuit breakers, or by removing plug from recep- tacle, or stop engine before servicing unless the procedure specifi- cally requires an energized unit.
DInsulate yourself from ground by standing or working on dry insulat- ing mats big enough to prevent contact with the ground.
DDo not leave live unit unattended.
DIf this procedure requires an energized unit, have only personnel familiar with and following standard safety practices do the job.
DWhen testing a live unit, use the
DDisconnect input power conductors from deenergized supply line BEFORE moving an induction heating power source.
FLYING METAL or DIRT can injure eyes.
DWear safety glasses with side shields or face shield during servicing.
DBe careful not to short metal tools, parts, or wires together during testing and servicing.
HOT PARTS can cause severe burns.
DDo not touch hot parts bare handed.
D Do not touch or handle induction head/coil during operation.
DKeep metal jewelry and other metal personal items away from head/coil during operation.
DAllow cooling period before working on equipment.
DTo handle hot parts, use proper tools and/or wear heavy, insu- lated welding gloves and clothing to prevent burns.
EXPLODING PARTS can cause injury.
D Failed parts can explode or cause other parts to explode when power is applied to inverters.
D Always wear a face shield and long sleeves when servicing inverters.
SIGNIFICANT DC VOLTAGE exists after removal of input power on inverters.
DTurn Off inverter, disconnect input power, and discharge input capacitors according to instructions in Troubleshooting Section be- fore touching any parts.
STATIC (ESD) can damage PC boards.
DPut on grounded wrist strap BEFORE handling
boards or parts.
D Use proper
FIRE OR EXPLOSION hazard.
D Do not place unit on, over, or near combustible surfaces.
DDo not service unit near flammables.
SHOCK HAZARD from testing.
DTurn Off induction heating power source be- fore making or changing meter lead connec- tions.
DUse at least one meter lead that has a self- retaining spring clip such as an alligator clip.
DRead instructions for test equipment.
FALLING UNIT can cause injury.
DUse lifting eye to lift unit only, NOT running gear, gas cylinders, or any other accessories.
DUse equipment of adequate capacity to lift and support unit.
DIf using lift forks to move unit, be sure forks are long enough to extend beyond opposite side of unit.
