Carrier VECTOR 6500 - Figure 8−7 Mechanical Fuel Pump; Figure 8−8 Electric Fuel Pump; Fuel Filter; Fuel Level Sensor (FLS)

8−9
62-11389
1
2
3
4
2
1. Screen
2. Nut
3. Copper Rings
4. Banjo Fitting
Figure 8−7 Mechanical Fuel Pump
To check or replace Screen
a. Ensure the unit will not start automatically by dis-
abling any two way communication and placing the
Main Power switch in the OFF position. Disconnect
the high voltage source and lockout/tagout the re-
ceptacle.
b. Turn nut (Item 2, Figure 8−7) counter-clockwise to
loosen and remove it .
c. Remove banjo fitting (Item 4) and let it hang loose.
Discard copper rings (Item 3) and replace with new
ones.
d. Turn screen (Item 1) counter-clockwise and remove.
Check and clean.
e. To install reverse above steps.
f. Start unit and check for leaks.
8.5.4 Electric Fuel Pump Screen
To check or replace Screen
a. Ensure the unit will not start automatically by dis-
abling any two way communication and placing the
Main Power Switch in the OFF position. Disconnect
the high voltage source and lockout/tagout the re-
ceptacle.
b. Remove 3 screws from cover (See Figure 8−8).
c. Remove cover, gasket and screen.
WARNING
Use the required protective eye wear and
clothing when working with solvents.
d. Wash screen in cleaning solvent and blow out with air
pressure. Clean cover.
e. To Install reverse above steps.
f. Start unit and check for leaks.
1
3
2
1. Cover 2. Gasket 3. Screen
Figure 8−8 Electric Fuel Pump
8.5.5 Fuel Filter
To replace filter:
a. Ensure the unit will not start automatically by dis-
abling any two way communication and placing the
Main Power switch in the OFF position. Disconnect
the high voltage source and lockout/tagout the re-
ceptacle.
b. Place a shallow pan under filter (item 7, Figure 8−5)
and open the water separator (item 5) to drain con-
tents.
c. Remove water separator and O-ring and then remove
element.
d. Install water separator on new element using new
O-ring.
e. Fill new element with clean diesel fuel, lubricate the
seal and install. Tighten firmly by hand.
f. Start unit and check for leaks.
8.5.6 Fuel Level Sensor (FLS)
An optional fuel level sensor (item1, Figure 8−9)
supplies an input signal to the microprocessor as to the
% of fuel remaining in the fuel tank. The microprocessor
will activate the A1 = “LOW FUEL LEVEL WARNING”
alarm when 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.
To Check The Fuel Level Sensor, do the following
a. Ensure the unit will not start automatically by dis-
abling any two way communication and placing the
Main Power switch in the OFF position. Disconnect
the high voltage source and lockout/tagout the re-
ceptacle.
b. Verify that the fuse (FLS) is not open. See Figure 8−9.
c. Verify that the wiring is correct, cable shield is prop-
erly grounded and condition of connectors. No dam-
age to sensor; no damage, moisture or corrosion in
connectors.