Potential Problem Loads For The Inverter; Ceiling Fans; Cell Phones; Computers And Sensitive Electronics - Xantrex7 UX - REV A Owner's Manual

5.0 Troubleshooting

Potential Problem Loads for the Inverter

CAUTION: Some of these
problem loads can cause
irreparable damage to the
load itself. Please contact a
Customer Service
Representative for more
specific information before
using any of these items
with the UX inverter.

Ceiling Fans

Cell Phones

Computers and Sensitive Electronics

Consumer Electronics

Clocks

Decreasing Loads

56
The inverter can operate most AC loads. However, there are special conditions
that can cause a load to behave differently than expected. The following
describes some of the common problems encountered when using an inverter.
Most large-diameter, slow turning fans run correctly, but generate more noise
than when connected to utility power. High speed fans tend to operate normally.
Some cellular telephones experience interference in the form of a clicking sound.
Some computers and sophisticated electronics have power supplies that do not
present a load until correct line voltage is available. When this occurs, each unit
waits for the other to begin. This can usually be solved by plugging in an
additional load (such as a lamp) to bring the inverter out of its search mode.
Avoid starting large loads when using a computer .
AM radios tend to pick up inverter noise, especially on the lower half of their
band. Inexpensive tape recorders are likely to experience noise as well. Avoid
starting large loads when using sensitive electronic devices.
The inverter's crystal controlled oscillator keeps the frequency accurate to within
a few seconds a day; however, external loads in the system may alter the inverter's
output waveform causing clocks to run at different speeds. There may be periods
where clocks keep time correctly and then mysteriously do not. This is because
most clocks do not draw enough power to trigger the load sensing circuit. In order
to operate, especially with no other loads present, the inverter's load sensing
circuit will have to be defeated.
If the amount of power a load draws decreases after it has been switched on (such
as with a small motor) and its current draw becomes less than the load sensing
threshold, it will be turned alternately ON and OFF by the inverter. This can
usually be solved by plugging in an additional load (such as a lamp).
©2002 Xantrex Technology Inc. All Rights Reserved.
P/N 975-0026-01-01 Rev A 06/2002