Figure 8-18: Mechanical Stoppers Adjustment Screws - GE Discovery LS System Service Manual

GE
HEALTHCARE
D 2307224-100, R
IRECTION EVISION
11.) Refer to
stoppers, adjusting the screws of the mechanical stoppers as follows:
a.) Remove screws marked 2.
b.) Loosen screws marked 1.
c.) Fasten both brackets to the gantry legs with screws marked 3, making sure that the bases
d.) Move the gantry to enable insertion of the screws marked 2, and fasten them tightly.
e.) Fasten screws marked 1 tightly.
12.) Tighten all the baseplate screws that were previously loosened.
13.) After VQC confirms that the Gantry is aligned within specifications, adjust the rear high-load
roller adjuster to a torque of 30 Nm so that the roller rests firmly on the floor.
14.) Replace the bracket that was removed in Steps 3 and 4 of Section 8.1.2.2.
15.) Perform a Well Counter Correction Calibration.
Note: • Well Counter calibration is performed after running the VQC procedure that is described in
Section 8.1.1.
• The full Well Counter Correction procedure is described in the PET Advance Operator Manual,
Direction 2280383-100 in the sections: Prepare the Phantom for 2D Well Counter Correction and
Prepare the Phantom for 3D Well Counter Correction (if needed).
6
Figure 8-18. Move the gantry to its home position, and secure it to the mechanical
of both brackets remain resting on the baseplate at all times.
The gantry can now be moved within the range of movement allowed by the oval holes
holding the screws marked 1.
3
2
3
1

Figure 8-18: Mechanical Stoppers Adjustment Screws

Chapter 8 - System QC, Calibration and Functional Tests
D LS S S
ISCOVERY YSTEM ERVICE
Page 257
M
ANUAL