7
5. If a DC power supply is being used as the
power source, switch it On. Turn the ON/OFF
switch on the inverter to the On position.
Check the meters on the left side panel. The
voltage should indicate between 11 and 14
volts, depending on the voltage of the power
source.
6. Turn the inverter’s ON/OFF switch to the Off
position. The indicator lights may blink and
the internal alarm may sound momentarily.
This is normal. Plug the test load into the AC
receptacle on the left side panel of the invert-
er. Leave the test load switched Off.
7. Switch the inverter’s ON/OFF switch to the On
position and turn the test load On. The inverter
should supply power to the load.
If it does not, please consult the troubleshoot-
ing section in this manual.
Connection
6
2. Connect the cables to the power input termi-
nals on right side panel of the inverter. The red
terminal is positive (+) and the black terminal
is negative (-). Insert the bare ends of the
cables into the terminals and tighten the
screws to clamp the wires safely.
3. Connect the cable from the negative (black)
terminal of inverter to the negative terminal of
the power source. Make a secure connection.
All power connections to your Cobra inverter
must be positive to positive and negative to
negative.
4. Connect the cable from the positive (red) termi-
nal of the inverter to the positive terminal of
the power source. Make a secure connection.
Connection
Connection
continued
CAUTION:
Loosely tightened
connectors can cause exces-
sive voltage drops and may
result in overheated wires and
melted insulation.
CAUTION:
A reverse polarity
connection (positive to nega-
tive) will blow the fuse in the
inverter and may permanently
damage the unit.
CAUTION:
Remove any jewel-
ry (watch, ring etc.). Be careful
not to short circuit the battery
with any metallic object
(wrench, etc.).
Connection
continued
WARNING:
You may observe a
spark when making the con-
nection because current can
flow to charge the capacitors
in the inverter.
Do not make
this connection in the pres-
ence of flammable fumes.
Explosion or fire may result.
CAUTION: REVERSED INPUT WILL BLOW FUSES
VENTS: DO NOT BLOCK
Chassis
CAUTION: REVERSED INPUT WILL BLOW FUSES
VENTS: DO NOT BLOCK
Chassis
5
500
MODIFIED SINE WAVE
FAN
DO NOT
BLOCK
