LINE AS-FUEL INJECTION 4W6311 - Caterpillar

Illustration 1 g00809802
(1) 24 VDC Power Supply 1 (2) 24 VDC Power Supply 2Shutdown procedure for Single Input with Maintenance Bypass
If 24 VDC is still available, the service person should perform a "Control X" on the PC in order to brake the rotor. This will ensure that there is no power in the system upon shutdown.
Note: When this procedure is performed, do not leave the system shut down for an extended period of time. The rotor is spinning on the bottom bearing. This could cause unnecessary bearing wear. When the flywheel is spinning, the following components are energized: the bus, armature leads and fuses.
Turn the keyswitch for the System Cabinet to the Bypass position. Make sure that the system is in Bypass mode.
If equipped, close the Maintenance Bypass Circuit Breaker (MBP) that is located on the Input/Output cabinet.
If equipped, open the Maintenance Isolation Switch (MIS) that is located in the Input/Output Cabinet.
If equipped, open the Input Isolation Switch (IIS) or Bypass Input Switch that is located in the Input/Output cabinet.
Allow the capacitor banks to bleed down for approximately 5 minutes in order to dissipate any residual energy in the bus, armature leads, and fuses.Shutdown Procedure for Dual Input with Maintenance Bypass
Note: When this procedure is performed, do not leave the system shut down for an extended period of time. The rotor is spinning on the bottom bearing. This could cause unnecessary bearing wear. When the flywheel is spinning, the following components are energized: the bus, armature leads and fuses.
Turn the keyswitch for the System Cabinet to the Bypass position. Make sure that the system is in Bypass mode.
If equipped, close the Maintenance Bypass Circuit Breaker (MBP) that is located on the Input/Output cabinet.
If equipped, open the Maintenance Isolation Switch (MIS) that is located in the Input/Output Cabinet.
If equipped, open the Input Isolation Switch (IIS) or Bypass Input Switch that is located in the Input/Output cabinet.
If equipped, disconnect the incoming power by opening the main INPUT circuit breaker that is located upstream of the UPS system.
Allow the capacitor banks to bleed down for approximately 5 minutes in order to dissipate any residual energy in the bus, armature leads, and fuses.Removal of the Power Supply
Illustration 2 g00811061
Open the door to the cabinet for the MMU or SMS in order to gain access to the door for the controller board (3) .
Remove 3 screws (4) that secure the door for the controller board.
Illustration 3 g00811076
Remove the lower hose clamp (8) from the 24 VDC power supply module (9) .
Remove the upper hose clamp (6) from the 24 VDC power supply module and remove the hose (7) .
Remove 2 screws from the front of the power supply vent adapter (10) .
Loosen the screw that is on the back of the power supply vent adapter (10) .Note: Do not remove the screw.
Remove the power supply vent adapter (10) .
Illustration 4 g00811094
Label all the wires on the static switch interface board (11) .
Disconnect the connector for the 24 VDC power supply from "J7" terminal (18) that is located