--- 9 ---
(7) Warning label (O) (at the front of sub fence (C) (standard accessory))
Fig. 10
7-3. Relative Standards
Standards, regulations and guidelines for the safe use of laser equipment.
[The U. S. A.]
There is a standard "Complies with 21 Code of Federal Regulation (21 CFR), Chapter 1, Subchapter J, Part 1010
and 1040" established by the Center for Devices and Radiological Health (CDRH) of the Food and Drug
Administration (FDA). Standards, regulations and guidelines of the other countries are under investigation.
7-4. Laser Marker
The Models C 12LDH and C 12FDH are equipped with the laser marker that complies with the U. S. A. standard,
FDA Complies with 21 CFR, Food and Drugs, Part 1040 "Performance Standard for Light-emitting Products",
Class II. The Class II laser is defined as follows:
The laser power is low and it is safe by the protective measures such as blinking. However, it is dangerous if
the operator's eyes are exposed directly to the laser for a protracted period.
The operator can use the laser equipment without particular training and instruction.
The amount of light exposure (output) is 1 mW or less at the position where the operator can be exposed to
the laser radiation during operation.
Table 2
(Threshold value)
Class II accessible emission limit
Emission duration (s)
Wave length
(nm)
(Amount)
(Unit)
> 2.5 x 10
-1
1.0 x 10
-3
W Radiant power
> 400
<
710
The saw blade unit prevents access of the operator's eye to the laser emitting aperture less than 65 mm.
In addition, the amount of light exposure (output) is 1 mW or less (about 0.4 mW) at this position. Thus the
Models C 12LDH and C 12FDH satisfy the Class II requirements adequately. There is no ill effect on the
operator's body if looking at the laser line on the workpiece during operation.
CAUTION: (1) Be sure to disconnect the power cord plug from the receptacle before removing the laser
marker for repair. If it is unavoidable to check the operation of the removed laser marker
with the power turned on, face the laser emitting aperture to the ground to show the laser
line on the ground.
(2) Laser radiation when open. DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH
OPTICAL INSTRUMENTS.
The lifespan of the laser marker in the Models C 12LDH and C 12FDH are about 2,160 hours. (About three
years: 4 hours of use/day x 180 days/year)
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