nifty 170SD series Operating/Safety Instructions Manual page 24

4.1.7
BOOM SWITCH: - Mounted on the boom rest on Boom 1, and operated by the upper boom, this
switch controls both the operation of the tilt alarm sensor, and the outrigger interlock. With the
booms in the stowed position, the tilt alarm sensor is bypassed, allowing the machine to negotiate
slopes in excess of the permissible working angle, without isolating the drive function. At the same
time, "Hi" drive is possible, as is fast throttle on those machines so equipped. When the booms are
raised, the tilt alarm sensor becomes activated, and the boom switch isolates the jack control
circuit. These control functions are of primary importance to the safety of the machine and
operator; under no circumstances should this control function be isolated or bypassed.
4.1.8
BATTERY MANAGEMENT: - Battery condition is permanently monitored by the control circuit, such
that when available power has decreased to 80% of full charge, the battery status circuit begins to
"chop" the power to the hydraulic power packs. This function causes the drive system to alternately
stop and start, signalling to the operator that re-charging is necessary. At the same time the Klaxon
will begin to sound intermittently re-enforcing the charge warning. At this point, sufficient power
remains to drive to the nearest power point. Should the operator ignore the on-set of the discharge
warning, the "chopping" will continue until the machine is rendered inoperative. Immediate charging
will then be required.
Under no circumstances should a machine be left fully discharged or severe battery damage can
occur in a relatively short time.
4.1.9
BATTERY ISOLATOR: - A battery disconnect switch is located beneath the centre bonnet section
which allows the machine control and power circuits to be isolated from the batteries themselves.
Under normal operation, the machine key switch should be used to isolate the machine, with the
Battery Isolator only being required for emergencies to disconnect the batteries in the event of a
short circuit. The battery charging circuit is connected directly to the battery side, so charging is
unaffected by use of this switch.
4.1.10
DUTY SELECTOR: - On multiple power option machines, one of the functions on the Platform
Control Station will be a Duty Selector. This key switch allows the selection of either power option
i.e. from Diesel to Battery, or Petrol to Battery, or vice versa. On other machines this same key
switch serves as an "ON-OFF" control.
4.1.11
DIESEL ENGINE:-Generally a Kubota
maintenance section of the Workshop Manual, driving a twin bodied pump with direct mounted
pump dump valves (one per section). The arrangement allows two speed
throttle.
4.1.12
DIESEL BOX: -Located adjacent to the Diesel engine, the Diesel box combines all of the functions
for Dual power operation, (Bi-Energy machines), as well as controlling the Diesel engine itself. The
relays in this box control Starting, High Throttle, Pump Dump, Duty Selector and Diesel Stop Timer.
There is also an integral Thermal trip, which protects the Throttle solenoid and other functions.
4.1.13
PETROL (GASOLINE) ENGINE:- Generally a Honda engine, described in the maintenance section of
the Workshop Manual, driving a single body pump with direct mounted pump dump valve. The
engine is also equipped with a throttle solenoid for two speed operation.
English/USA 09/03
Operating & Safety Instructions
D722-E engine (OC95 on 2WD), described in the
SD Series
operation and fast
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