QDR
4500 Technical Manual
5-6
Note:
When replacing the TY Motor Controller board ensure that the ID switch is set to 5.
Table Y Belt
To remove and replace the Table Y Belt refer to Figure 5-2, and Figure 5-3, and follow the
procedure below:
1.
Center the table and remove the two screws that secure the table top in place.
2.
Turn off the QDR 4500 instrument power, computer power, and main circuit breaker.
3.
Pull the table top to the left far enough to remove the right table rail end cover, and
remove the cover. Mark this as the right cover so that it is not confused later with the
left cover (they are not interchangeable).
4.
Pull the table top to the right far enough to remove the left table rail end cover, and
remove the cover. Mark this as the left cover so that it is not confused later with the
right cover (they are not interchangeable).
5.
At the encoder end of the belt, loosen the 2 bolts holding the tension block, remove the
tensioning nut, and remove and replace the belt.
6.
Install the tension spring and tensioning nut.
7.
Tighten the tension nut so that the spring is compressed to 7/8”. The bracket cutout can
be used as a measuring guide (the inside of the washer should be flush with the bracket
cut).
8.
Tighten the two mounting bolts holding the tension block.
9.
Perform the MOTOR$TY calibration procedure.
Note:
When starting this procedure, make sure the encoder
is not
clamped to the drive shaft
tubing.
Table Y Motor or Gearcase
To remove and replace the Table Y Motor or Gearcase refer to Figure 5-2, and Figure 5-3,
perform the steps for removing the belt described above, and continue with this procedure.
perform the following:
1.
Remove the Table Y Belt as described above.
2.
Unplug the motor cable from the Motor Controller Board.
3.
Remove the four Allen bolts, and nuts, holding the motor and gearcase.
4.
Remove the motor and the gearcase.
5.
If replacing the gearcase, install the pulley from the old gearcase on the new gearcase.
6.
Replace the motor and gear case assembly making sure to align the gasket correctly.
Snug the Allen bolts but don’t over tighten.
7.
Install the belt on both pulleys.
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