User`s manual

5 Installation of intraskan dc

5.10 Scissor-Arm Operation Checking

Move the Scissor arm and ensure there is no drift as per steps given below.

• Keep the Vertical Arm in vertical position and horizontal arm in horizontal position.

• Move the horizontal arm down (folding movement) in small jerk free incremental steps of approximate-

ly 10 degrees.

• At each step as above, leave the scissor arm and ensure that there is no drift movement. Continue till

the horizontal arm reaches vertical position.

• Keep the Vertical Arm vertical and horizontal arm horizontal position.

• Pull the L Arm in small jerk free incremental steps of approximately 10° so that the horizontal arm stays

horizontal always and the Vertical arm moves down.

• At each step as above, leave the scissor arm and ensure that there is no drift movement. Continue till

the maximum expanded position of the scissor arm is reached.

• Keep the Scissor arm in folded position.

• Refer “5.14 Mechanical Adjustments” in case of minor adjustments of scissor-arm.

5.11 Other Checks:

• Ensure that the Straight-Arm rotation is 170-190° approximately from end to end of the Base Unit.

• Ensure that the Tube head rotation about the axis is 300-310° approximately.

• Ensure that the L arm rotation angle is 520-540° approximately.

• Ensure that the scissor-arm rotation about the straight-arm is 200-210° approximately.

5.12 Power On Check:

• For new Installation, if installation date is > 6 months of manufacturing date of Tube Head, carry out

Tube seasoning procedure (5.13 X-Ray Tube Seasoning) before proceeding.

• Switch On the power and give the following exposures using internal console and exposure switch.

Also give exposures using external switch configuration if installed.

• 70kV/6mA, 2 Sec Exposure 2 Times

• 55kV/4mA 40 ms Exposure 2 Times

• If no errors are reported, then the Unit is ready to use.

5.13 X-Ray Tube Seasoning

• In case of non-usage for long period (>6months) X Ray Tube Seasoning is recommended. Cover the

Cone with Lead Cap. Using the Control Console set the parameters as per Table below. Give Exposure

and repeat exposure 5 times for each combination of kV, mA and ms. After all the exposures are com-

pleted, the Unit is ready for use.

Table 5.14-1: Tube Seasoning Protocol

Kv mA Time (ms) Kv mA Time (ms) Kv mA Time (ms)

55 4 40 60 4 40 70 4 40

55 6 40 60 6 40 70 6 40

55 8 40 60 8 40 70 8 40

55 4 500 60 4 500 70 4 500

55 6 500 60 6 500 70 6 500

55 8 200 60 8 200 70 8 200