Global Power Technologies
3-11
5030
3.7.8
Fuel Connections:
Even though the generator was checked for leaks before leaving the fac
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tory all fuel connections should be checked for leaks before starting the generator to verify that
no leaks have been formed in shipping. If a leak is present in the fuel connection between the
flexible fuel line and the orifice holder on the burner cover then the leaking fuel is drawn into the
air intake. Fuel leaking into the air intake can create a mixture that is so fuel rich that ignition
is not possible.
3.7.9
Manual Ignition:
Manual ignition of the generator is accomplished by holding a flame over the
exhaust port of the generator. When this is done the flame will commonly occur in the exhaust
of the burner rather than in the combustion zone where it should be. If the flame is allowed to
warm the burner the flame will usually “pop” into the burner zone on its own. If this does not
happen then close the air shutter and turn the fuel pressure very low. If it is possible to quickly
turn the fuel supply off and on again this will sometimes cause the flame to move into the burn
-
er. If the burner still will not ignite, contact your customer service representative.
3.7.10
Burner:
If no other cause for low power can be found then a visual inspection of the burner
may be required. Allow the generator to cool then remove the flexible fuel line leaving the ori
-
fice in place. Disconnect the wires from the pressure switch, remove the spark ignitor electrode
(A8, Figure 5) and remove the two nuts holding the burner in place (A7, Figure 5) then remove
the burner. See Figure 6. Inspect the parts for any tears, holes or corrosion and replace them
if they are defective. Check the venturi, if it looks corroded it should be replaced.
3.7.11
Open Circuit Voltage:
The unloaded voltage from the thermopile is an indication of the tem
-
perature difference between the cold side and the hot side. At normal operating conditions the
open circuit voltage should be about 4.0 volts. Values lower than 3.8 volts generally indicate
that the thermopile is not hot enough and values higher than 4.0 volts generally indicate that
the thermopile is too hot. NEVER ALLOW THE VOLTAGE TO EXCEED 4.0 VOLTS.
3.7.12
Cooling:
The fin base temperature is measured by inserting a thermocouple between the cool
-
ing fins near the centre of the thermopile. In a 25ºC (77ºF) ambient the fin base temperature
is typically 120ºC (248ºF) but it should never exceed 170ºC (338ºF). If the temperature is too
high then the generator cooling fins are obstructed. Ensure that the fins are not blocked with
debris or other obstructions and that at least 15 cm (6 inch) of clearance is present below and
above the fins.
3.7.13
Converter Limiter analysis (12 VOLT):
After V
oc
is at the correct voltage, connect the TEG(-)
lead to the terminal post and measure the power on the output of the limiter converter as fol
-
lows:
3.7.13.1 Measure the output voltage between terminals 1 & 2 and ensure that it is in the 10 to
18 volt range. Adjust the voltage as described in the limiter converter manual until the
output voltage is above 14.0 volts. If this can be achieved, then the converter limiter
is probably fine. To actually measure the power produced proceed as follows.
Summary of Contents for 5030
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Page 28: ...Global Power Technologies 4 2 5030 Figure 8 30 Watt Converter Limiter Physical Description ...