Monaco 2008 Knight, Руководство пользователя

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chassIs InformatIon — 10
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2 0 0 8 K n I G h t
The bottom of the tank is made in a “V”
configuration allowing the engine pick-up tube
access to almost all available fuel in the tank.
Internal baffles slow fuel slosh. A check valve
placed at the bottom of the baffle, at the end of
the tank with the pick-up tube, prevents fuel
starvation through long corners when fuel supply
is low.
NOTE
Fill the fuel tank if the motorhome is
going to be stored for any length of
time to reduce the amount of potential
condensation. After storage, check
the vent tube for blockage. It is not
uncommon for insects to plug the vent
tube. If pressure or vacuum exists when
the fuel cap is removed, the vent tube
may be blocked. The end of the vent
tube is located on the curbside of the fuel
tank, near the bottom.
Fuel Sender
The Centroid
fuel sender
has no moving
parts and works
by measuring
electrical
property
between inner
and outer tubes
in the tank.
The more fuel
between the
tubes the higher the reading. Electronics in the
head of the sender convert the capacitance to
current to drive the fuel gauge.
Connections:
The Centroid sender has four connections:
1 and 2 - Positive (POS) and Negative
(NEG):
Battery voltage to run the electronics
in the sender head.
3 - SEND:
Connects to the SEND
terminal of the gauge on the dash.
4 - ALARM: Makes a connection
internally to the negative (NEG)
terminal when the low fuel alarm level
is reached (when the fuel gauge is
reading about 1/8 tank). This turns on
the fuel indicator on the liquid crystal
display on the speedometer and is not
adjustable.
Adjustments:
The Centroid sender has two adjustments:
1 - EMPTY:
Adjusts for length of sender.
It is set at the factory, covered with a
sealant and should not be changed.
2 - FULL (Full Adjustment): The full
adjustment can be used to correct
for slight differences between fuel
meters. During installation it was
factory calibrated and does not need
re-adjustment.
The correct adjustment technique, with a full
tank of fuel, is to start with the full adjustment
screw completely clockwise. This should cause
the reading to be above full. Adjust slowly, rotate
counterclockwise, until the full mark on the
gauge is reached. The intent is to always adjust
downscale rather than upscale.
NOTE
The adjustement must be made within
thirty seconds of turning on power. If
you don’t finish, turn the power off and
back on to get another thirty seconds of
adjustment time. Beyond thirty seconds
from power up, the sender responds too
slowly to changes to allow calibration
(“damped” output).
Troubleshooting:
A. Electronic Output:
The sender has
a transistorized output to prevent
an ohmmeter from getting a correct
reading of output resistance.
B. Fuel Only: The sender will not work
correctly in conducting fluids such as
water (it will read above full empty all
the time in water). One possibility is
that when there is a constant above-full
empty reading is that there may be
water in the bottom of the fuel tank.
C. Contact Centroid:
Probably 90% of
the return Centroid tests work okay
on the bench. If you have incorrect
readings contact Centroid (telephone:
800-423-3574, or preferably, fax: 386-
423-3709) with the symptoms. A short,
“fill in the blanks” troubleshooting
test is provided to test the sender. It is
easier to find the problem that way than
after the sender has been removed from
the system, since the problem is not
necessarily with the sender.
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