SAFETY
Caution/Warning
PowerPac power supplies use high output voltages that are electrically isolated from
earth ground to minimize the risk of electrical shock to the user. The following guide-
lines should be observed and followed when using a PowerPac power supply.
PowerPac power supplies have passed tests for operation at temperatures between 0°
and 40° C, with relative humidity between 0 and 95% non-condensing. Operating the
power supply outside these conditions is not recommended by Bio-Rad and will void the
warranty.
1.
To ensure adequate cooling of the power supply, be sure that there is at least 6 cm clearance
around the power supply. Do not block the fan vents at the rear of the unit.
2.
Always connect the power supply to a 3-prong, grounded AC outlet, using the 3-prong AC power
cord provided with the power supply.
3.
Bio-Rad electrophoresis cells have molded two-prong plugs which are inserted into the power sup-
ply’s high voltage output jacks. These plugs have been I.E.C. 1010 certified for safety compliance
for use with PowerPac power supplies. Use of other plugs or banana jacks is done at the user’s
own risk and is not recommended by Bio-Rad. When inserting and removing the molded two-prong
plug, always grasp the plug by the molded support at the rear of the plug. Do not grasp the individ-
ual prong ends!
4.
Do not operate the power supply in extreme humidity (
≥
95%) or where condensation can short the
internal electrical circuits of the power supply.
5.
When taking the power supply into a cold room, the unit can be operated immediately. However,
when removing the power supply from the cold room, let the unit equilibrate to room temperature for
a minimum of 2 hours before using it.
6.
Never connect a high voltage output lead to earth ground. This defeats the floating electrical isola-
tion of the power supply and exposes the user to potentially lethal high voltages. The PowerPac will
detect ground leakage and automatically shut down the power supply.
7.
The PowerPacs are designed to detect electrical arcing of the high voltage cables and to
automatically shut down.
!
2
POWER
PAC
Safety
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