U S E R G U I D E
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U V C S S I D E CU R E C O N V E Y O R
5
Specific Safety Considerations
Dymax light-curing conveyors are designed to maximize operator safety and minimize exposure to UV light. To use the
conveyor safely, it must be set up and operated in accordance with the instructions in this user guide.
Equipment is designed to be used when properly set up, with components correctly connected, and operated in accordance
with
relevant
instructions.
Design was developed to maximize operator safety and minimize exposure to UV.
CAUTION!
Always wear UV eye protection or face shield, when working near UV light!
Safety Recommendations
•
Use eye protection or a face shield approved for complete UV protection.
•
Long-sleeved shirts or a lab coat are recommended to protect the arms, and the use of UV opaque gloves to protect
the hands.
Dymax UV Light-Curing System Safety Considerations
Dymax UV light-curing technology has been used successfully for over 30 years. The fast cure, one-component nature of our
UV light-curing technology has made it the process of choice for many manufacturers requiring a "cure on demand" assembly
process. Operators must understand these four concepts to use the UV light source safely: UV exposure, high-temperature
surfaces, ozone, and bright, visible light.
UV Exposure
Standard Dymax UV light-curing systems have been designed primarily to emit UVA energy (Figure 1). UVA energy is
generally considered the safest of the three UV ranges: UVA, UVB, and UVC. Although OSHA does not currently regulate UV
light exposure in the workplace, the American Conference of Governmental Industrial Hygienists (ACGIH) does recommend
Threshold Limit Values (TLVs) for ultraviolet light.
The strictest interpretation of the TLV (over the UVA
range) for workers’ eyes and skin allows continuous exposure up to 1
mW/cm
2
(intensity). Unless you are placing bare hands into the curing area, it is unusual to exceed these limits. To put 1
mW/cm
2
limit into perspective, a cloudless summer day will typically exceed 3 mW/cm
2
of UVA light, and also include the more
dangerous UVB light (primarily responsible for sun tans, sun burns, and skin cancer) as well.
Figure 1.
UV Spectrum
