GE HEALTHCARE
DIRECTION 2307224-100, REVISION 6DISCOVERY LS SYSTEM SERVICE MANUAL
Chapter 9 - Planned Maintenance (PM) Page 259
Chapter 9 - Planned Maintenance (PM)
In addition to the maintenance procedures for the new Discovery LS components described on the
following pages, the maintenance schedules for the CT and the PET components included in the
system as detailed in the documents listed hereunder, must be followed carefully:
• For maintenance procedures for the CT components, refer to to the CT Planned
Maintenance Procedures CD-ROM, Direction 5112972-200.
• For maintenance for the PET components, refer to PET Advance Imaging System Planned
Maintenance Manual, Direction 2240409-100.
9.1 Maintenance of Mechanical Components
Table 9-1 gives descriptions and frequencies of the Discovery LS procedures for maintenance of
mechanical components.
Table 9-1: Maintenance Procedures of Mechanical Components
Description of Procedure Frequency
Lubricate PET gantry driving mechanism (linear bearings, rails, rollers,
lead screw). See Section 9.1.1.
1 Year
Secure nuts/screws of base plates, rollers, driving assembly. 2 Years
Verify covers brackets, screws, tightness and clearances Visual inspection after
every cover removal.
Check retractors chains and movement. After PET gantry is
moved back to initial
position.
Check tightness of grounding cables. 1 Year
Check secondary base linear rails/bearings tightness. See Section 9.1.1. 2 Years
Lubricate secondary base linear rails/bearings*. 1 Year
Check timing belts adjustment and tightness. See Section 9.1.2. 1 Year
Check adjustment tightness of secondary base screws and pulleys. 1 Year
Check tightness of table anchoring screws. 2 Years
Check tightness of table retractors chains and brackets. Every PM
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