Remove Frame 7 LCL Filter Module

Follow these steps to remove the LCL filter module from a frame 7 enclosure.
ATTENTION:
Risk of injury, death, or equipment damage exists.
IGBT power and LCL filter modules have a high center of gravity and may pose a tip-over hazard. To guard against death, serious personal injury, or equipment damage, do not subject the module to high rates of acceleration or deceleration while transporting. Do not push or pull above the points that are indicated on the module.
  1. Review the product advisories in the Before You Begin section.
  2. Open the enclosure door.
  3. Remove the protective touch guard.
  4. Loosen the thumb screw that secures the connection cover to the front of the line side converter power module.
  5. Use the screw to lift the connections cover up and off the power module chassis.
    IMPORTANT: Minimum inside bend radius for fiber-optic cable is 50 mm (2 in.). Any bends with a shorter inside radius can permanently damage the fiber-optic cable. Signal attenuation increases as inside bend radius is decreased.
  6. Without bending the cable to a radius less than 50 mm (2 in.), remove the fiber-optic cable from the transceiver in the PDI port of the power interface circuit board in the power module and remove the fiber-optic cable from the power module chassis.
    IMPORTANT: Observing the minimum bend radius, carefully coil the fiber optic cable and secure it to the LCL filter module where it cannot be damaged.
  7. Disconnect the 24V DC signal wire harness connector P3 from J3 on the I/O panel in the line side converter power module.
    Image with callouts showing wire harness and fiber-optic connection of the PowerFlex 755TL and 755TR frame 7 LCL filter.
  8. Remove the two M8 x 30 mm torx screws that secure the circuit breaker AC output flexible bus bars to the AC input terminals on the LCL filter and remove the bus bars.
  9. Remove the two M8 x 30 mm torx screws that secure each of the LCL filter AC output flexible bus bars to the AC input terminals on the line side converter power module and remove the bus bars.
    Image with step numbers showing AC output and input connections between PowerFlex 755TL and 755TR frame 7 LCL filter module and line side power module.
  10. Remove the two M10 x 20 mm torx screws that secure the upper LCL filter module chassis to the module support bracket.
  11. Leave the two M10 x 20 mm screws that secure the LCL filter chassis to the floor mounting bracket while preparing the PowerFlex 750-Series service cart.
  12. To remove the module by using the service cart, follow the detailed instructions in the PowerFlex 750-Series Service Cart and DCPC Module Lift Installation Instructions, publication 750-IN105.
    IMPORTANT: The AC fuse wire harness and 240V AC power wire harness connections are on the back of the LCL filter module. These connectors must be removed before you can release the module fully from the enclosure.
  13. Remove the two remaining M10 screws at the bottom of the module, and pull the module out only as far as necessary to expose the connections at the back of the module.
    Image with callouts showing chassis connections for PowerFlex 755TL and 755TR frame 7 LCL filter module.
  14. Disconnect the AC fuse wire harness connector P1 from connector J1 on the LCL filter module I/O panel.
  15. Disconnect the 240V AC power wire harness connector P2 from J2 on the LCL filter module I/O panel.
    Image with callouts showing AC fuse wire and AC wire harness connections of the PowerFlex 755TL and 755TR frame 7 LCL filter module.
  16. Remove the LCL filter module from the enclosure.
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