dymax PC-3 Operation Manual - Page 4

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SAFETY

Safety Precautions Must Be Observed By All Personnel

Working Near Or Around Ultraviolet (UV) Light

UV Terminology

The portion of the Electromagnetic spectrum which falls between x-rays and visible light

is called Ultraviolet or UV.

Ultraviolet (UV) radiation can be classified into three

categories: UV-C, UV-B, and UV-A. UV-C is for the wavelengths below 280 nm, UV-B

is for the wavelengths between 280-315 nm, and UV-A denotes wavelengths between

315-380 nm.

Exposure Hazards

Exposure to UV light, even for short periods of time, can be hazardous. The danger

depends upon the exposure time, the intensity of the light, the wavelength, and the

individual's sensitivity to UV. UV-B and UV-C can be considered the most hazardous to

the skin, causing such effects as sunburn. UV-A, UV-B, and UV-C are hazardous to the

eyes, which is why eye protection is important when working around UV light.

The lamps produce minimal amounts of ozone during start-up and no ozone during

operation. At high concentrations, it can cause discomfort, or at sufficiently high levels,

be dangerous.

Safety Guidelines

The National Institute for Occupational Safety and Health (NIOSH) recommends that

exposure to UV energy be controlled and limited in the work place.

The total intensity from 320 to 400 nm hitting unprotected skin or eyes should not

exceed

1 mW/cm² for periods longer than 1000 seconds. For shorter exposure times, the total

radiant energy shall not exceed 1000 mWsec/cm².

Do not operate the unit without the light guide installed into the bezel.

WARNING

With the internal filter installed, the PC-3 Ultra emits UVA and visible light. Never look

directly at the light source while the unit is in use.

TM-023 PN 37099

Rev 05/12/98