Tiffin Motorhomes 2014 Allegro Bus, Owner'S Manual

Page: 60 / 151

TIFFIN MOTORHOMES –ALLEGRO BUS® Chapter 7 ELECTRICAL FEATURES
Auxiliary Start Switch
The auxiliary start switch (Figure 7-3) is located on the driver’s-side console box (Figure 7-4).
This switch briefly connects the Allegro Bus coach batteries to the chassis batteries which, in
turn, allows the chassis batteries to “borrow” power from the coach batteries to assist in
starting the engine.
If the chassis batteries cannot themselves start the engine in the “normal” mode, hold down
the battery-boost switch and retry starting the engine.
By using the battery-boost switch while trying to start the Allegro Bus engine, a jump-start
situation is realized between the coach and chassis batteries.
If the battery-boost switch is required to start the engine on a regular basis, ask your Tiffin
Motorhomes Dealership to check the chassis batteries and the associated charging system.
If your motor home features an all-electric residential refrigerator; it will be equipped with six
12-volt house batteries.
Battery Inspection and Care
The 12-VDC electrical-power system consists of six 20 amp hour VDC batteries wired in a
series-parallel combination to provide a final, 12 VDC system providing up to 450 Ampere-
hours (A-hr) of service.
As the batteries contain a significant, and potentially lethal, amount of electrical energy; they
must be handled with due diligence and care. Some of the routine precautions include:
7-4
Warning
Remove rings, metal watchbands, and any other metal jewelry before working
around batteries. If any metallic object (tool, jewelry, etc.) contacts the positive
battery terminal or any connection made to that terminal AND also contacts the
negative terminal or any of its connections, a SEVERE ELECTRICAL SHORT will
occur which could result in an explosion, fire, and/or personal injury. Lead-acid
batteries contain diluted sulfuric acid, which can be dangerous; avoid direct contact
with any battery fluids. Always wear eye protection while servicing batteries.
Figure 7-3.
Auxillary Start Switch
(Center)
Figure 7-4.
Driver’s Side