ETA Systems SM5505 manual Line Voltage Present With Machine Power OFF

Section 2 - Safety

On both removable side panels, near the top of the panel and approximately in the middle are the following warn- ings. Each calls attention to a specific hazard requiring special attention.

WARNING

LINE VOLTAGE PRESENT

WITH MACHINE POWER OFF.

Risk of electric shock or burn.

Turn off and lock out facility power before servicing.

With the front panel circuit breaker of the power conditioner turned off and locked out, potentially hazardous touch voltages are confined to the input power conductors at the rear of the circuit breaker. Entering the cabinet under these circumstances is classified as a Type 4 task under SEMI S2-0200 guidelines. This hazard label alerts personnel to the need to turn off and lock out power to the power conditioner at the facility source. Doing so will eliminate all potentially hazardous voltages inside the enclosure. Entering the enclosure under these cir- cumstances if a Type 1 task under SEMI S2-0200.

WARNING

Hot surface inside.

Contact may cause burn.

Do not touch.

Wear protective gear before servicing internal parts.

PLEASE NOTE: After extended operation, internal parts of the power conditioner may become very hot. This hazard label calls attention to the need for protective gear when entering the equipment enclosure.

Inside the power conditioner enclosure another warning similar to the one shown at the left warns once again of the presence of very hot surfaces and the potential for injury and burns. This warning is accompanied by the legend “CAUTION - HOT SURFACE” and is attached to the upper steel frame of the isolation transformer on the primary side.

8 Conditioned Power Center