Troubleshooting Guide; Specifications - Cobra CPI 475 Operating Instructions Manual

10272-CPI475_PH2.qxd 7/9/07

Troubleshooting Guide

Operation
Troubleshooting Guide
Problem/Symptom Possible Causes
Low output voltage Overload
No output voltage Low input voltage
No output voltage Thermal
after prolonged use shutdown
No output voltage, High input
"Protect" indicator voltage
lighted
No output voltage Short circuit
No power to Blown fuse
inverter
Low battery alarm Poor DC wiring
on all the time
Poor battery
condition
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Operation
•

Specifications

Solution Continuous output power (1 hour) . . . . . . . . . . . . 400W
Surge rating (0.1 second) . . . . . . . . . . . . . . . . . . . 800W
Reduce the load.
Peak efficiency (12V – 1⁄2 load) . . . . . . . . . . . . . . > 88%
Recharge battery.
Efficiency (full load, 12V) . . . . . . . . . . . . . . . . . . . > 83%
Check connections
and cable. No load current draw . . . . . . . . . . . . . . . . < 0.5A (12.6V)
Output waveform (resistive load) . . . Modified sine wave
Allow inverter
to cool off. Output frequency . . . . . . . . . . . . . . . . . . . . 58HZ – 62HZ
Output voltage . . . . . . . . . . . . . . . . . . . . . . 109V – 120V
Reduce load,
continuous USB output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V
operation input
Input voltage . . . . . . . . . . . . . . . . . . 10.4VDC – 14.4VDC
current required.
Alarm voltage (unload) . . . . . . . . . . . . . . .10.2V – 10.8V
Improve ventilation;
Shutdown voltage (unload) . . . . . . . . . . . . . 9.2V – 9.8V
Make sure ventilation
Operating temperature range . . . . . . . . . . . . 0°C – 40°C
openings in the
inverter are not
Storage temperature range . . . . . . . . . . . . -40°C – 85°C
obstructed.
Reduce ambient
Protection . . . . . . . . . .Overload, short-circuit, overtemp,
temperature.
Notes
Make sure
the inverter is
connected to
All protection is automatically recovered.
12V battery.
To protect the battery, if the unit needs to be restarted
Check regulation
after low voltage protection, the voltage of DC input
of charging system.
should be above 12V.
Check load for
To extend the life of the fan, it will stop when there is no
proper operation.
load. The speed of the fan increases as the load increases.
Replace fuse.
The unit is completely insulated in input and output for
added safety.
Check
connections.
Make sure battery
is fully charged.
Specifications
•
(32°F – 104°F)
(-40°F – 185°F)
reverse polarity, under/over voltage
Nothing Comes Close to a Cobra 15
®