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Global Power Technologies
1120 - Class I, Division 2, Group D, T3
3.7.6
Battery Charge Control Module and Battery
: Refer to Figure 29 for the location of
the battery and control module. Refer to Figure 19 for the schematic diagram. The
primary purpose of this circuit is to supply 2 VDC to the spark ignitor module (located in
ignitor housing assembly). The main source for this supply voltage is the 2 volt sealed
re-chargeable lead acid battery. As all batteries tend to self-discharge, the control char-
ger circuit is incorporated to maintain the battery at a constant charge. The charging
circuit will accept an input voltage of 2.3 volts to maintain the battery at a fully charged
condition. The dual inductor and two 100uF caps filter any noise. Power to the ignitor
circuit is switched by the manual ignition switch (Push to Ignite) or the fuel system pres-
sure switch.
Note: The battery charge circuit is normally charged from the 6 volt TEG output.
3.7.7
Digital Panel Meter
: The digital panel meter consists of two subassemblies, the display
portion (Figure 27, item D10) which is a light emitting diode display and the control por-
tion (Figure 29, item F7) which conditions the voltages for the display portion.
The digital panel meter is a 3.5 digit auto-ranging meter. When the power switch is in the “Set
Up” position, the meter will show the V
set
voltage. When the power switch is set to the “Run”
position, the meter will show the output voltage of the system. In addition when the “Meter
Select” switch is pressed the meter will show the output current flowing to the load.
The meter is powered directly by the power unit. When the TEG is first started, the panel meter
will not function until the TEG voltage reaches 4.5 volts.
3 .8 Service
3.8.1 On Site Visits
1)
Drain the sediment bowl of the fuel regulator by opening the drain cock.
2)
Read and record the fuel pressure and the output of TEG pressure regulator. If a master
fuel gauge is present, record this pressure.
3)
Notice if the normal light is lit. The lamp should glow steady (generator running). If the
lamp is out, check and replace the bulb. If the lamp is flashing, overload condition exists.
Trouble shoot the system.
4)
Read and record the output voltage and current.
5)
Visually check for loose components or hardware. Tighten any loose hardware and
connections.
NOTE: No adjustment should be made to any devices, unless malfunctions were found and
corrected.
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