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90550749 VEC049D REVISED.qxp
Fault Protection and Troubleshooting Guide
INVERTER POWER SWITCH TURNED ON
Trouble/Indication
No AC output —
red LED lit
No AC output —
green LED not lit
Low battery alarm
sounds continuously
Motorized power tool
will not start
Motorized power tool
does not operate at
correct speed
Television/radio
interference
Resetting the Unit
When a thermal shutdown problem occurs, the inverter will reset and turn back on automatically after it cools.
WARNING: To reduce the risk of injury or property damage: If the appliance stops working, even
momentarily, turn off the appliance and disconnect from the inverter until the cause is identified and corrected.
CARE AND MAINTENANCE
Storage
1. Ideal storage temperature range is 50-68°F (10-20°C).
2. Store and use the inverter in a cool, dry place with adequate ventilation.
3. Avoid locations that are exposed to heating units, radiators, direct sunlight or excessive humidity or dampness.
Fuse Replacement
This inverter is equipped with multiple internal fuses. Normally, these fuses will not "blow" unless there is a
serious problem inside the unit. Internal fuses are replaceable; however, only trained personnel should
attempt fuse replacement. Refer to the "Service Information" section of this Instruction Manual.
Preventive Maintenance
Inverters require minimal maintenance. For optimum performance, the manufacturer recommends periodically
performing the following preventive maintenance.
1. Turn OFF the inverter using the front panel ON/OFF Power Switch.
2. Remove the DC power fuse.
3. Check and tighten all electrical connections, including the ground.
4. Using a non-metallic vacuum cleaner hose, vacuum the air slots and fan area.
5. Clean the outside of the unit using a damp (not wet) cloth.
6. Wipe unit surfaces thoroughly with a dry cloth.
7. Re-insert the fuse and resume operation.
Accessories
Recommended accessories for use with your tool are available from your local dealer or authorized service center.
If you need assistance regarding accessories, please call: 1-800-544-6986.
WARNING: The use of any accessory not recommended for use with this tool could be hazardous.
6/5/09
1:11 PM
Possible Cause
Suggested Remedy
DC input is below 10 volts
Recharge or replace battery.
Excessive appliance load
Turn unit OFF. Reduce the load, wait for the
— thermal shutdown
inverter to cool down, then turn the unit ON
again.
Fuse(s) open
Check DC input — fuse(s) in vehicle. Replace
the fuse with one of the same type and
rating if necessary.
Low battery voltage
Recharge battery. Remove load from the
inverter while recharging battery.
Bad connection or wiring
Tighten all DC connections.
Excessive start-up load
If appliance does not start, appliance is
drawing excessive current and will not work
with inverter.
Purely inductive load
Make the load not purely inductive. Operate
an incandescent lamp at the same time as
motor.
Snow in picture,
Keep inverter and antenna distant from each
"buzzing" sound
other. Use shielded antenna. Connect antenna
to amplifier.
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