Specifications

FTB 312-4 Revision 4 – 1-8-2008 iii
Personnel Hazard Warning
Dangerous Voltages
Dangerous line voltages reside in certain locations in this equipment. Also, this equipment
may generate dangerous voltages. Although FTCA has incorporated every practical safety
precaution, exercise extreme caution at all times when you expose circuits and components,
and when you operate, maintain, or service this equipment.
Avoid Touching Live Circuits
Avoid touching any component or any part of the circuitry while the equipment is operating.
Do not change components or make adjustments inside the equipment with power on.
Dangerous Voltages Can Persist with Power Disconnected
Under certain conditions, dangerous voltages can be present because capacitors can retain
charges even after the power has been disconnected.
Protect yourself — always turn off the input (primary) power and wait for one minute for
storage capacitors to drain their charge. Then check between the red and blue wires on the
flashhead terminal block with a voltmeter for any residual charge before touching any circuit
element or component.
Do Not Depend on Interlocks
Never depend on interlocks alone to remove unsafe voltages. Always check circuits with a
voltmeter. Under no circumstances remove or alter any safety interlock switch.