Global 5120 - Figure 10 Fuel Gauge Pressure Vs Elevation

GlobalPowerTechnologies  2-9
5120
Example: If the site elevation is 2000m
(6682 ft.) then 14 kPa (2 psi) must
be added to the pressure on the data
plate.
If it is necessary to adjust the pressure,
remove the cover on the regulator and
loosenthelocknut,seeFigure6.Turnthe
adjustingscrew(clockwisetoincreasepres-
sure)untiltherequiredpressureisobtained.
Tightenthelocknutwhennishedadjusting.
2.6.4 Air-shutter Adjustment
1) RecordtheV
set
.
2) Openthedoorsandloosentheadjust-
mentscrewlock-nutFigure6.
3) Turn the adjusting screw one turn
counterclockwise.
4) Closethedoors,waittenminutesthen
measureV
set
.
If V
set
is greater than the original value or did not change(airrich)turntheadjustingscrew
anotherturncounter-clockwiseandwaittenminutes.Continueuntilyouobserveadecrease
inV
set
thenproceedtonextparagraph.
If V
set
is less than original value (fuel rich)refertoFigure11.Noticethatthepeakofthe
graph is within one quarter of a turn (either
direction) of the adjusting screw.  Set the
adjusting screw so that it is one half turn air
rich.
Tightenthelock-nut.
2.6.5 Fuel Pressure Adjustment
If the fuel system and burner appear to be
operatingcorrectly,thefuelpressuremaybe
slightly adjusted to match the TEG’s voltage
with the rated V
set
 value.  Figure 12 can be
usedtodeterminehowmuchtoadjustthefuel
pressure.
 EXAMPLE: RatedV
set
 =6.5V
   MeasuredV
set
=6.8V
   Di󰀨erence =-0.3V
Asseenonthegraph,thefuelpressuremust
beincreased8.5kPa(1.2psi).
Figure 9V
set
vsTimeAfterIgnition
Figure 10FuelGaugePressurevsElevation