Bio-Rad PowerPac™ Universal Power Supply - Manual (Page 25)

Section 5
Maintenance and Troubleshooting
5.1 Maintenance
The PowerPac Universal requires little maintenance to assure reliable
operation. To clean the case, first unplug the power supply. Use a damp cloth to
wipe down the outer case.
5.2 Troubleshooting
5.2.1 Basic Troubleshooting
Problem Cause Solution
No display/lights/fan 1. No AC power. 1. Check if the PowerPac
2. Blown fuse Universal is unplugged,
or if there is a problem
with th AC power source,
or if the power switch is
in the off position.
2. Replace the fuse. See
Section 5.3 for details.
Repeated blown fuses Hardware failure Contact Bio-Rad Technical
Resources.
Leads from the cell are Output terminals for the Use the PowerPac Adaptor
not long enough to fit PowerPac Universal are (Catalog number 165-5061),
the output jacks recessed 16 mm to which accommodates most
meet safety regulations. standard 4 mm banana
Some leads are not plugs, to make secure
long enough to make electrical connection.
electrical connection. Note: use of this PowerPac
adaptor voids EN61010
safety provisions.
Clock loses settings Onboard battery Contact Bio-Rad Technical
on Power Off depleted Resources
5.2.2 Power Failure Detection
The Power Failure detection mode (PFd) is used to determine the PowerPac
Universal response to power failures and is set as described in Section 3.1. There
are three Power Failure detection modes:
OFF: Power Failure detection is disabled. A run will terminate if a power
failure occurs and Error code 07 will be displayed (see Section 5.2.4).
ON NEXT RUN ONLY: Power Failure detection is enabled for a single run and
is then disabled for all subsequent runs. "PFd" is displayed in the upper right
corner of the run screen for the run in which it is active.
ON: Power Failure detection is enabled and "PFd" is displayed in the upper
right corner of the run screen. A run will resume when power is restored after
single or multiple power failures(s).
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