Instruction Manual peqPOWER 250 Volt Power Supply
Short circuit
Load exceeds 3000 mA
Blown fuse in the power supply
Incorrect input voltage (check input voltage switch near power inlet)
Change in load
Electrophoresis systems were added or removed during a run
Buffer leaking in a connected system
Excessive temperature increase
Excessive buffer evaporation
Loose connection in a connected system
Amperage set to low
Change in constant mode
Voltage changes to amperage
o
Amperage set too low. Ceiling hit and constant mode changed from voltage to amper-
age. Increase amperage to 3000 mA.
Amperage changes too voltage
o
Voltage set to low. Ceiling hit and constant mode changed from amperage to voltage.
Increase voltage to 250 volts
The 250 volt system has automatic cross over, set voltage or amperage, and preset wattage. During the
electrophoresis process only one parameter is limiting at a time. The limiting parameter, together with
the conductivity in the electrophoresis system, and the values for the other parameters determine the
maximum output.
REPAIR AND MAINTENANCE
Introduction
The peqPOWER 250 Volt Power Supply requires no periodic maintenance program with the exception
of an occasional dry wipe-down of the instrument.
Encountering Problems
1.
Check the troubleshooting section.
2.
Call Technical Service.
3.
If the unit must be shipped back for repair, contact PEQLAB for a decontamination form and
shipping instructions.
Cleaning
Device and output jacks must be always clean. Before using any cleaning or decontamination methods
except those recommended by the manufacturer, check with the manufacturer that the proposed method
will not damage the equipment. To clean the centrifuge use a damp cloth and a mild, non-corrosive
detergent (ph < 8). After cleaning, ensure all parts are dried thoroughly before attempting to operate
the unit. Do not immerse the centrifuge in liquid or pour liquids over it.
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