Xantrex XKW 12-150, Operating Manual

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Revision A
79
Section 4. Calibration
Introduction
Adjustments to programming and readback accuracy for the power supply are made
using cover-off procedures which must be performed by a service technician.
Calibration Setup
Service
Environment
and
Precautions
•
Follow established antistatic procedures.
•
Work at a bench with adequate room and support for the unit under test and for
all equipment required.
•
To reduce shock hazard, use only an insulated, straight-blade screwdriver when
calibrating trim potentiometers.
•
NEVER calibrate these units alone. Ensure that someone is present who can help
should an accident occur.
Accessing
Calibration
Potentiometers
WARNING
Exercise caution when using and calibrating a power supply. High energy levels
can be stored at the output voltage terminals on a power supply in normal
operation. In addition, potentially lethal voltages exist in the power circuit and on
the output and sense connectors of a power supply with a rated output greater
than 40 V. Filter capacitors store potentially dangerous energy for some time
after power is removed.
WARNING
Disconnect AC power from the unit before removing the cover. Even when the
front panel power switch is in the OFF position, live line voltages are exposed
when the cover is removed. Repairs and adjustments must be made by
experienced service technicians only.
WARNING
Use a non-conducting, straight-blade screwdriver to adjust the trim pots.
TM-25OP-01XN.book Page 79 Monday, April 5, 2004 8:58 AM