GE Discovery LS - Section 2.3 CT Equipment Service; 2.3.1 CT Gantry; 2.3.1.1 CT Gantry General

GE HEALTHCARE
DIRECTION 2307224-100, REVISION 6DISCOVERY LS SYSTEM SERVICE MANUAL
Page 48 Chapter 2 - Discovery LS System Safety Information
2.2.3.4 Compact Power Distribution Cover Lock (CPDU Only)
Refer to Figure 2-10. The top cover of the CPDU locks. It should be kept locked at all times, unless
it is being serviced. If unlocked, it is possible to remove the CPDU covers protecting the front of the
CPDU.
Figure 2-10: CPDU Lock
2.3 CT Equipment Service
DANGER HIGH POTENTIAL FOR INJURY. EQUIPMENT SERVICE CAN ONLY BE
PERFORMED SAFELY WITH THE MAIN POWER DISCONNECT LOCKED OUT
AND TAGGED OUT.
Follow these general rules:
• Only qualified service personnel trained in the service and operation of this scanner should
perform any service on this equipment.
• Equipment fuses, switches and circuit breakers are for fire and equipment protection only.
Do not rely on them to protect you against electrical shock or
uncommanded equipment motion.
• Personal Protection Equipment (PPE) is required and must be worn.
The service switches and circuit breakers described hereafter are not to be relied on as personal
protection devices. They do not replace lock-out and tag-out of main power to ensure personal
safety. Switches and breakers are intended to only inhibit particular system functions and
equipment operation. They do not eliminate or remove the electrical or mechanical hazards that
exist. Because hardware can fail and defeat the functionality of these devices, only Lockout/Tagout
ensures protection from unattended gantry rotation and electrocution.
Personal protection equipment must always be used when performing service on this equipment.
Always use PPE when working with hazardous chemicals or materials.
2.3.1 CT Gantry
2.3.1.1 CT Gantry General
With the gantry’s primary covers removed, secondary covers are used to help prevent accidental
contact with electrical contacts. The most electrically dangerous area in the gantry is the exposed
slip-ring platter. The system should be tagged and locked out whenever the gantry covers are
removed.
When the gantry is rotating, the left and right sides of the gantry are where objects are most likely
to be ejected, if not properly fastened. It is important that all hardware be properly fastened
(torqued) to its proper specification.
Take the following precautions when working on, near or around the gantry:
• Never wear loose clothing or jewelry. Clothing might become entangled in the rotating
assembly and jewelry can short to high voltages.