Section 5 - Remove & Replace
5-9
Table X Encoder
Table X Belt
Motor Controller Bd
Table X Motor
Front Endcap
Figure 5-4. Table X FRUs
Table X Belt
To remove and replace the Table X Belt located within the X Table Drive Assembly, refer to
Figure 5-4 and follow the procedure below:
1.
Before removing power from the QDR 4500, move the table to the far left using the
Motor Control Pad. The Motor Control Pad can be accessed from the Main Menu by
choosing
Utility
, followed by
emergency Motion
.
2.
Turn off the QDR 4500 instrument power, computer power, and main circuit breaker.
3.
Remove 2 screws from the right table rail end cover, and slide the cover off from the
end.
4.
Remove the front endcap from the table X drive assembly (3 Phillips screws).
5.
Remove the back Phillips screw from the right side cover (of the table X drive
assembly) and slide the cover out from the front. This provides access to the belt.
6.
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.
7.
Install the tension spring and tensioning nut.
8.
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).
9.
Tighten the two mounting bolts holding the tension block.
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