SAFETY SUMMARY

TM 11-5820-921-40-1

SAFETY SUMMARY

The following are general safety precautions that are not related to any specific procedures and

therefore do not appear elsewhere in this publication. These are recommended precautions that

personnel must understand and apply during many phases of operation and maintenance.

KEEP AWAY FROM LIVE CIRCUITS

Operating personnel must at all times observe all safety regulations. Unless specifically directed in

this manual, do not replace components or make adjustments inside the equipment with any

power supply turned on. Under certain conditions, dangerous potentials may exist in the power

supplies when the power control is in the off position. To avoid casualties, always remove power

and discharge and ground a circuit before touching it.

DO NOT SERVICE OR ADJUST ALONE

Under no circumstances should any person reach into or enter the enclosure for the purpose of

servicing or adjusting the equipment except in the presence of someone who is capable of

rendering aid.

RESUSCITATION

FIRST AID

Each person engaged in electrical operations will be trained in first aid, particularly in the

technique of mouth to mouth resuscitation and closed chest heart massage (FM 21-11).

The following warnings appear in this volume, and are repeated here for emphasis.

WARNING

A 3-wire (line, neutral, and safety ground) AC line power connections is required when

operating the equipment. If a 3-wire safety grounded AC power receptacle is not

available, a separate ground wire must be installed from the chassis ground to an earth

ground. Without an adequate ground, the equipment chassis and frame will float to a

dangerously high potential.

WARNING

Lethal voltage is used in the operational checkout of this unit. Death on contact may

result if personnel fail to observe the following safety precautions. Remove watches and

rings and exercise extreme caution when working inside the equipment throughout the

remainder of this procedure.