Bio-Rad Model 422 Electro-Eluter - Manual (Page 6)

Section 3
Safety Instructions
Power to the Model 422 Electro-Eluter is to be supplied by an external DC voltage power
supply. This power supply must be ground isolated in such a way that the DC voltage out-
put floats with respect to ground. All of Bio-Rad's power supplies meet this important safe-
ty requirement. Regardless of which power supply is used, the maximum specified operating
parameters for the cell are:
600 VDC maximum voltage limit
24 Watts maximum power limit
50°C maximum ambient temperature limit
Current to the cell, provided from the external power supply, enters the unit through the
lid assembly, providing a safety interlock to the user. Current to the cell is broken when the
lid is removed. Do not attempt to circumvent this safety interlock, and always turn the
power supply off before removing the lid, or when working with the cell in any way.
Since hazardous voltages may be present in the electro-eluter, it is important that certain pre-
cautions are observed for the safety of the operator:
1. Always turn off the power supply before removing the safety cover. Do not use the safe-
ty cover as an on-off switch.
2. Never attempt to operate the cell without the safety cover.
3. Do not attempt to move the cell with the power on.
4. Do not leave an operating cell unattended for long periods of time.
5. Do not overfill the upper or lower buffer reservoirs. Refer to Section 4 for proper buffer
levels.
6. If the cell appears to be drawing excessive current, turn off the power supply and check
the entire system (for example, buffer chamber leaks, overfilled buffer chamber,
buffer too conductive, etc.).
Note: Please become familiar with these precautions, both for safe operation of this equip-
ment and to prevent loss of valuable experimental results.
Important:
This BIO-RAD instrument is designed and certified to meet IEC1010-1* safety stan-
dards. Certified products are safe to use when operated in accordance with the instruc-
tion manual. This instrument should not be modified or altered in any way. Alteration
of this instrument will:
• Void the manufacturer's warranty
• Void the IEC1010-1 safety certification
• Create a potential safety hazard
BIO-RAD is not responsible for any injury or damage caused by the use of this instrument
for purposes other than for which it is intended or by modifications of the instrument not
performed by BIO-RAD or an authorized agent.
*IEC1010-1 is an internationally accepted electrical safety standard for laboratory instruments.
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