Bio-Rad Profinia™ Protein Purification Instrument - Manual (Page 174)

13.2.8 Power Conditioning
The Profinia system is designed to operate in a laboratory environment with other instruments
nearby; it complies with the CE standard for immunity from interference. During operation,
the Profinia system draws a maximum of 40 volt-amps (VA). This is 0.33 amps at 120 volts
and 0.17 amps at 240 volts. As with any electronic device, it is desirable to use a surge
suppressor or uninterruptible power supply (UPS) to avoid damage caused by voltage
surges or other severe power line problems:
• Surge suppressors — designed to prevent damage due to surges or spikes in power
line voltage. Select a surge suppressor that is rated to deliver enough current for the
Profinia (40 VA) and any accessories (such as a computer). Avoid plugging motor-driven
items, such as vacuum pumps, into the same surge suppressor as the Profinia system
— this may cause interference.
• Uninterruptible power supplies (UPS) — act as surge suppressors but also maintain
power when the main power fails. When selecting a UPS, first consider the current
capacity of the unit; a UPS should have a rating of at least 80 VA (twice the draw of a
Profinia system). When selecting a UPS, remember to add the current requirements of
any computer, monitor, or other accessory that will be used with the system. Avoid
plugging motor-driven items, such as vacuum pumps, into the same UPS as the
Profinia system — this may cause interference and shortens the amount of time the
UPS supplies power. The manufacturer’s runtime chart defines how long the system
runs after the power fails. Select a UPS that supplies power through the longest expected
power outage, with a safety margin of 20%.
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