GE BrightSpeed Elite, Руководство по предварительной установке

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GE H
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Chapter 4 - Room Planning Page 65
4 – Room Pla
nning
3.1 Service Clearances for Single Service Engineer
• Gantry front cover removal requires the use of the “Tilting Cover Dollies”. These dollies allow
the Service Engineer to separate the cover from the gantry, tilt the cover 90 degrees, roll the
cover to the foot end of the table, and then tilt the cover an additional 90 degrees such that the
front cover is now upside down relative to the normal system mounted condition.
Figure 4-2
illustrates the minimum clear space required to achieve this operation. The gantry front cover
must be removed to a position that satisfies the minimum regulatory clearances.
• The gantry rear cover, with service dollies installed, requires a width 2244 mm (88 in. ) and a
depth of 610 mm (24 in. ) of clearance for removal. Sufficient space must be calculated to move
the cover either straight back or to a side of the table to satisfy the minimum regulatory
clearance shown in
Figure 4-2 . This means the rear cover cannot violate the workspace on the
rear or either side of the gantry.
• If gantry service requires both the front and rear covers be removed, then these covers must
be positioned within the room in such a manner as to not violate the regulatory clearances on
any side of the gantry. This may necessitate removing the covers from within the suite. This
should be discussed with the customer and provisions made to accommodate this potential
event.
• A single Service Engineer can safely perform servicing of the table. Sufficient clear space must
be available to maintain regulatory clearances when the table covers or cradle are removed.
• In your room layout design, service shall have clear and unobstructed access to the gantry
tube change area for all major component replacements. These components must be able to
reach the service area without lifting or rigging by one service engineer. Major components
include:
-
CT X-ray tube in crate
- High voltage tank(s) in crate
- Slipring in crate
- Detector assembly
Be aware of cabinet placement, and how surface floor ducts are used in room configurations.
3.2 Gantry Service Clearance
Specifications for Boom Assembly clearance arc are defined in . The boom assembly is used during
tube and detector replacement. The minimum ceiling height within the clearance radius is 2286 mm
(90 in.).
Figure 4-3 Boom Assembly Clearance