Troubleshooting Guide; Specifications - Cobra CPI 850 Operating Instructions Manual

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 output voltage Inverter
switched off
No power
to inverter
Reverse
DC polarity
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) . . . . . . . . . . . . 800W
Reduce the load.
Surge rating (0.1 second) . . . . . . . . . . . . . . . . . . 1600W
Recharge battery.
Peak efficiency (12V – 1⁄2 load) . . . . . . . . . . . . . . > 88%
Check connections
Efficiency (full load, 12V) . . . . . . . . . . . . . . . . . . . > 83%
and cable.
No load current draw . . . . . . . . . . . . . . . < 0.5A (12.6V)
Allow inverter
Output waveform (resistive load) . . . Modified sine wave
to cool off.
Output frequency . . . . . . . . . . . . . . . . . . . . 58HZ – 62HZ
Reduce load,
Output voltage . . . . . . . . . . . . . . . . . . . . . . 109V – 120V
continuous
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.
Make sure
the inverter is
Notes
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.
Turn inverter on.
The unit is completely insulated in input and output for
added safety.
Check wiring
to inverter.
Observe
correct polarity.
Check
connections.
Make sure battery
is fully charged.
Specifications
(32°F – 104°F)
(-40°F – 185°F)
reverse polarity, under/over voltage
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