Schumacher Electric DSR104 Owner's Manual page 10

Indication of polarity inversion
8.5
If the polarity is incorrect, the alarm will sound:
• If the remaining voltage in the batteries of the vehicle is at least 4 volts
• If the output voltage selector is not connected
Internal fuse replacement
8.6
The booster is equipped with an internal fuse. It can melt following a short circuit or a too-long start attempt.
To monitor the fuse:
• Push the button. If the blue LED under the fuse does not light up, the fuse is melted.
Fuse specification
AMG Heavy Duty 500A
WARNING! KEEP AWAY FROM SPARKS AND FLAMES – BATTERY COULD EMIT EXPLOSIVE GASES.
1. Allow the fuse to cool down completely (approximately 5 minutes).
2. Make sure the unit is unplugged from the external charger.
3. Using a wrench, remove the first nut securing the fuse. Repeat the same steps for the second nut.
Remove the open fuse and replace it with a new one of the same type and rating.
4. Tighten the nuts to secure the fuse.
5. The unit is now ready to use.
Use of Auxiliary DC Cables
8.7
The booster is equipped with an auxiliary DC cable connection. This connection is only to be used with
DSR Auxiliary DC Cables.
IMPORTANT: Using the booster without a battery installed in the vehicle will damage the vehicle's
electrical system.
IMPORTANT: Do not use the booster while charging its internal battery.
IMPORTANT: Do not use the built-in DC cables of the jump starter and the auxiliary DC cable at the same time.
WARNING! A SPARK NEAR THE BATTERY MAY CAUSE A BATTERY EXPLOSION.
TO REDUCE THE RISK OF A SPARK NEAR THE BATTERY:
1. Turn the vehicle's ignition OFF before making cable connections.
2. Position the AUXILIARY DC cables to reduce the risk of damage by the hood, door and moving or hot
engine parts.
NOTE: If it is necessary to close the hood during the jump starting process, ensure that the hood does
not touch the AUXILIARY DC cables or cut the insulation of the cables. Review the instructions included
with the auxiliary DC cable before proceeding.
3. Stay clear of fan blades, belts, pulleys and other parts that can cause injury.
4. Determine the location of the auxiliary cable connection on the vehicle.
5. Remove the cover from the auxiliary DC cable connection on the jump starter.
6. Insert the auxiliary DC cable into the connection of the jump starter.
7. Insert the auxiliary DC cable into the connection of the vehicle.
8. Connect the output voltage selector.
12V
9. Crank the engine. If the engine does not start within 8-10 seconds, stop cranking and wait at least 3
minutes before attempting to start the vehicle again.
• To allow the voltage of the booster battery to build up again.
• To allow the renewal of gases inside the battery.
• To allow the internal components of the battery to cool down.
If you do not wait and/or the starting attempt is too long, you risk losing power, you reduce your starting
possibilities by the second attempt and you risk melting the fuse inside.
24V
• 10 •