Carrier VECTOR 1550 Series - Figure 8-3. Mechanical Fuel Pump; Figure 8-4. Electric Fuel Pump (Optional); Figure 8-5. Fuel Level Sensor Wiring

62-61753-21
8-5
1
2
3
1
4
1. Nut
2. Banjo Fitting
3. Filter
4. Copper Rings
Figure 8-3. Mechanical Fuel Pump
8.4.4 Electric Pump Filter
To Check or Replace Filter
a. Remove 3 screws from cover (item 1, Figure 8-4).
b. Remove cover, gasket and filter.
WARNING
Use the required protective eye wear and
clothing when working with solvents.
c. Wash filter in cleaning solvent and blow out with air
pressure. Clean cover.
d. To Install reverse above steps.
1
2
3
1 Cover
2 Gasket
3 Filter
Figure 8-4. Electric Fuel Pump (Optional)
8.4.5 Fuel Filter
To replace filter:
a. Place a shallow pan under filter (item 6, Figure 8-1)
and open the water separator (5) to drain contents.
b. Remove water separator and O-ring and then re-
move element.
c. Install water separator on new element using new
O-ring.
d. Fill new element with clean diesel fuel, lubricate the
seal and install. Tighten firmly by hand.
e. Start unit and check for leaks.
8.4.6 Fuel Level Sensor (FLS)
An optional fuel level sensor (item 13, Figure 8-1) sup-
plies an input signal to the microprocessor as to the %
of fuel remaining in the fuel tank. The microprocessor
will activate the CHECK FUEL LEVEL alarm wshen
the level reaches 15%, and (if configured to do so)
shuts the engine down when the level reaches 10%.
The fuel tank level is be displayed in the Unit Data List.
SUPPLY
VOLTAGE
GROUND
OUTPUT
Figure 8-5. Fuel Level Sensor Wiring
To Check The Fuel Level Sensor, do the following
a. Verify that the wiring is correct. See Figure 8-5 for
correct wiring.
b. With the fuel tank empty, and sensor dry (If the sen-
sor has been in the fuel, let it hang to dry for
2 hours) the output reading should be approximately
0.25 VDC.
c. With the fuel tank full, the output reading should be
approximately 4.75 VDC.
8.4.7 Lube Oil Filter
CAUTION
When changing oil filter, the new filter
should be primed (partially filled) with
clean oil if possible. If the filter is not
primed, the engine may operate for a peri-
od with no oil supplied to the bearings.
After warming up the engine, stop engine, place shal-
low drain pan under filter and remove filter. Lightly oil
gasket on new filter before installing. Tighten per filter
manufacturer’s directions printed on filter.