Before Beginning; Pre-Mechanical Installation - GE Discovery LS System Service Manual

GE
HEALTHCARE
D 2307224-100, R
IRECTION EVISION
6.2.2

Before Beginning

Before the system is shut down to begin this upgrade, raise the table to its maximum height.
6.2.3

Pre-Mechanical Installation

Follow the procedures in this section to prepare the system for the Mechanical Installation Team.
CAUTION The FE must be present to warm-up the system, take initial measurements, shut down, and
lock-out/tag-out the system.
Follow these steps to prepare the system for the table base upgrade:
1.) Warm up the system and run a Fast Cal.
2.) Drive the base to the CT position.
3.) Drive the cradle all the way out of the bore to the home position.
4.) Turn on the CT gantry alignment light.
5.) Mark the CT location of the alignment light on the cradle with a piece of tape.
6.) Leave the alignment lights enabled.
7.) Drive the base to the PET position.
8.) Mark the PET location of the alignment light on the cradle with a piece of tape.
9.) Drive the base back to the CT position.
10.) Measure the distance between the pieces of tape on the cradle, and record the actual distance
below. (The mechanical installation team will use this measurement to set the distance
between the PET and CT detents during Section
• Optimal Distance = 675 +/-14 mm. (Refer to the information on
• Actual Distance = ___________________________________.
11.) Raise the table to its maximum height.
Note: For best results, use the table controls to raise the table to maximum height before removing power
from the system.
12.) Shutdown the CT system.
13.) Remove CT gantry power.
14.) Follow the currently recommended procedures to lock-out and tag-out the CT PDU.
6
page 136 if the distance falls outside the 675 +/-14 mm range.)
Chapter 6 - Table
D LS S
ISCOVERY YSTEM
6.2.6.28 of this procedure.)
page 132
S M
ERVICE ANUAL
and
Page 113