Medrad Mark 7 Arterion, Руководство по эксплуатации

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Cleaning and Maintenance
15 - 85
8.
Fully advance the piston
9.
Turn off the system at the Power Unit.
10.
Clean the piston.
11.
Clean the inner area of the syringe interface.
12.
Clean the drop front. The drop front cone should pivot freely back and forth. If it does not, it
may be contaminated with contrast.
13.
Clean the Injector Head case.
14.
Re-install the clean Pressure Jacket.
15.
Re-install the clean Drop Front Cover.
16.
Re-install the clean Syringe Heat Maintainer.
17.
Clean any spilled contrast media from the Table Bracket and table rail to assure free
movement of the bracket along the rail.
15.1.2 Inspecting the Injector Head
• Inspect the housing for any damage or cracks that could allow fluid to leak inside, or weaken
the structural integrity of the unit.
• Inspect all cables connected to the unit.
•
Look for cuts, cracks, worn spots or other obvious damage to the cables.
• Ensure that all connectors are properly seated.
• Ensure that all mounting bolts and screws are secure.
• Inspect for contrast media build-up in the syringe interface area, including the Syringe Heat
Maintainer and the Pressure Jacket. Follow the cleaning guidelines outlined in this chapter.
• Inspect the pivot points to ensure they move freely.
• Inspect the Injector Head Controls for damage or excessive wear.
15.1.3 Inspecting the Pressure Jacket
Prior to each procedure, inspect the Pressure Jacket for signs of deterioration or fatigue by looking
through it with light shining through the Pressure Jacket. Bayer recommends replacing the Pressure
Jacket if defects are found during daily inspection.
Rotate the Pressure Jacket while looking through it to view all areas. This includes the front edges and
the entire cylindrical surface and the grooves that interface with the injector head.
A Pressure Jacket should be rejected for cracks, crazing, scratches (if a fingernail can catch on the
scratch), and opacity. These conditions indicate that the Pressure Jacket has been weakened and may
fracture during a high pressure injection. The Pressure Jacket should NOT BE USED if any of these
conditions exist.
Cracks are usually the result of a sharp impact (such as from dropping). A crack may appear simply as
a line, usually originating at the radius or edge and may also appear in conjunction with crazing.
Figure 15 - 1: Cracks