Lcl Filter Module And Power Module Replacement; Unit Mount Drives (19Mv Product) - Carrier 19XR Start-Up And Service Instructions

components and later chapters covers larger frames. Refer to this
manual for field instructions of typical repairs.
For power module and LCL filter module replacement, special
tools are required. Ensure that these tools are available prior to
undertaking this type of work. These components are very heavy
and the work cannot be completed without access to the appropri-
ate ramp assembly tool.
LCL FILTER MODULE AND
REPLACEMENT
To release the modules, one must disconnect fiber-optic cables.
Ensure that cables are not pinched and maintain minimum bend
radius per below.
IMPORTANT: Minimum inside bend radius for fiber-optic cable
is 2 in. (50 mm). Any bends with a shorter inside radius can
permanently damage the fiber-optic cable. Signal attenuation
increases as inside bend radius is decreased.
50 mm
(2 in.)

UNIT MOUNT DRIVES (19MV PRODUCT):

If service of main drive components is required a ramp assembly
tool is required (Fig. 38). It is recommended that access to a ramp
assembly tool is available for every jobsite as this tool is required
for removal of the LCL, converter or inverter section of the drive.
Fig. 38 — PF755TL 19MV Ramp Tool
To access the LCL, converter, or inverter section of a 19MV drive,
first the guards in front of the drive enclosure will have to be re-
moved to access the components. Then the top bus bars and DC
fuses on top of the drive and any other cables which have to be re-
moved to free up the individual components.
Then install the ramp assembly (Fig. 39). Note that this is a safety
device, and that care must be taken to inspect the ramp assembly
prior to use and properly attach the ramp to the structure per
Fig. 40 or serious bodily injury may occur.
POWER MODULE
66
Fig. 39 — Ramp Installation Location
Fig. 40 — Ramp Installation Torques
Upon attachment to the VFD structure the LCL, converter, or con-
verter can slide onto the ramp and thereby provide access to over
head rigging. Once component is slide out on the ramp a plunger
pin can lock the component in position. See Fig. 41.
Fig. 41 — Plunger Pins Locking Component in Place
The procedure for removal and installation is the same for all 3
major components. Figure 42 shows access for overhead rigging.