Jump Starting
Alternative Starting Procedure:
A weak or discharged battery will not supply the amount of CCA (Cold Cranking Amps) necessary to initiate
and maintain cranking the engine while supplying the required voltage to start the engine. If the engine fails
to crank, or cranks slowly due to a weak chassis battery, there are electrical back-up systems that will increase
chassis battery voltage.
WARNING:
Batteries can emit explosive gases. Always ventilate the battery compartment prior to any work or
service to the batteries. Extinguish all smoking material and keep all open flame and spark producing
devices away from battery area.
CAUTION:
A large amount of electrical current is required to jump-start an engine. The sizes of the battery,
alternator and jumper cables supplying the “jump” are current limiting factors. Voltage fluctuations
that occur during a jump-start procedure can damage sensitive electronic equipment and charging
systems. Wait a sufficient amount of time for a surface charge to build before attempting to crank an
engine when using a jump-start procedure. If uncertain about performing a jump-start procedure,
contact a professional. Damage and personal injury can occur if this procedure is not performed
correctly.
Battery Boost Switch:
The Battery Boost (not available on all units) switch engages a heavy-duty solenoid to electrically
connect the house batteries to the engine battery in the event the engine will not crank or cranks
slowly. The solenoid is designed for short-term high current intermittent use. Engaging the boost
solenoid for an extended period will damage the solenoid.
Using the Battery Boost Switch:
With the ignition key off, press and hold the Battery Boost switch for ten seconds. After ten seconds,
continue to hold the switch down and turn on the ignition. If the engine fails to crank or does not crank fast
enough, discontinue the attempt. Continued attempts will only diminish any remaining surface charge in the
chassis battery and end future alternative attempts.
Next, start the generator. This may require using the Battery Boost switch for the generator to start from the
engine battery. Once the generator is operating, the electrical combination of the generator and the inverter
will charge the batteries.
Allow the generator to run approximately ½ hour
before attempting to start the engine.
After ½ hour of generator operation, leave the
generator on and hold down the Battery Boost switch
for one minute. Release the switch for one minute,
then press the switch again for one minute. Alternate
this cycle three to five times.
Next, hold the switch down and turn the ignition O
n.
The battery voltage gauge should indicate at least 12
Volts. If voltage is sufficient with the Boost switch
held down, try to start the engine.
If the engine fails to crank or fails to crank quickly, the
chassis battery may be depleted and the motorhome
will require jump-starting or an external charger
hooked to the chassis battery.
080349
080349
Battery Boost Circuit