Medrad Mark 7 Arterion, Operation Manual

Page: 94 / 162

MEDRAD
®
Mark 7 Arterion Injection System
15 - 86
Stress Cracks may appear after the Pressure Jacket has been subjected to a number of pressure
cycles. These tiny cracks appear around the front area of the Pressure Jacket, and usually form a
pattern around the jacket’s circumference. Stress cracks are easiest to see while rotating the Pressure
Jacket in front of a light source.
Figure 15 - 2: Stress Cracks
Crazing can occur when non-compatible cleaning solutions or solvents are used on the Pressure
Jacket. Crazing can also occur when the Pressure Jacket has reached the end of its expected life.
Crazing appears as small lines that interfere with the transparency of the Pressure Jacket. Crazing
usually appears localized to a point of impact or fatigue.
Figure 15 - 3: Crazing
Scratches result from objects striking or scraping the inside or outside surface of the Pressure Jacket.
Scratches may occur when the Pressure Jacket is improperly handled. Check depth of scratches by
pulling your finger across the scratch, perpendicular to the surface. If your fingernail catches on a
scratch, the Pressure Jacket should NOT BE USED.
Figure 15 - 4: Scratches
Normally the Pressure Jacket is transparent, enabling you to clearly see through the barrel.
Figure 15 - 5: Opacity
15.1.4 Inspecting the Heat Maintainer
• Inspect the Heat Maintainer for cracks. Bayer recommends replacing the Heat Maintainer if
cracks are found during inspection.
15.1.5 Inspecting the Display Control Unit
• Inspect the cable connected to the Display Control Unit.
•
Look for cuts, cracks, or worn spots, or other obvious damage.
• Ensure that the connector is properly seated and fastened securely.
• Inspect the housing for any damage or cracks that could allow fluid to leak inside, or weaken
the structural integrity of the unit.
15.1.6 Inspecting the Table Mount Bracket
• Inspect the Clamp knob to ensure that it is tightened.
• Inspect the Injector Head knob to ensure it is tight and the Injector Head fits securely in the
Table Bracket.
• Inspect for broken or damaged parts.
• Check the vertical motion of the Table Bracket. If the gas spring is not functioning properly,
do not use the bracket.