Cynosure Cynergy, Technical Manual

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14 of 112 850-1265-000, Rev. 4 Cynosure, Inc.
Electrical Hazard
The system requires 220 VAC ± 10%, 30 A, 50-60 Hz, single-phase electrical service to operate.
WARNING: Even when the laser is off and the AC line cord is disconnected, DC
voltages on various laser components, such as capacitors may exist. This can present a
potentially fatal electrical hazard during service procedures.
Take the following precautions to avoid electrical shock during servicing:
♦
Always turn the laser off and disconnect the AC line cord from the receptacle before
removing the protective housing of the laser system.
♦
With the laser off, allow the dump resistors to dissipate the energy in the pulse forming
network capacitors to a safe level, approximately 45 seconds. Monitor the voltage on the
capacitors with a DVM probe to ensure it is at a safe level.
IMPORTANT: The Cynergy laser system, the capacitor bank does not dump when
going between laser states (Ready to Standby) or between laser wavelengths. The
only time it dumps is when the user selects Utility. The capacitor bank voltage is
displayed on the screen as a quick reference, but the voltage on the lamps should
still be checked with a DVM prior to servicing.
♦
If it is necessary to test or adjust any electrical component while the system power is on,
be careful not to touch any electrical components with bare fingers; use appropriate
probes or insulated tools only.
♦
Become familiar with the electrical schematics and layout of the system before
attempting to service the laser.
If the AC must be connected during service routines, exercise caution around mains connected
components, such as power supply feeds, circuit breakers, key switches, etc. A remote interlock
fault condition will reduce high voltage electrical hazards to service personal. This fault
condition disables the high voltage power supply control and simmer circuits, as well as ensuring
that the dump relay is closed, grounding the potential of the pulse forming network. When
possible, remove the remote interlock plug during “live” service routines.
Grounding
Even when the laser is turned off and the AC line cord disconnected, high DC voltage levels may
remain. Before performing any procedure, use a shorting stick to ground all interior components.
The main capacitor bank stores large amounts of electrical energy. Measure the voltage on the
capacitor bank before attempting any service. Ground the capacitor bank with a shorting stick for
at least five seconds.
WARNING: Do not attempt to short directly (i.e., with a screwdriver) or a potentially fatal
electrical shock can occur.