Replacement and repairs on the collimator 9 - 3
Siemens-Elema AB SPR8-215.898.01 Page 3 of 8 MOBILETT Plus / - E/ - M
Solna, Sweden Rev. 05 01.02 SPS-UD
• Set a SID of 100 cm (39"). Use a measuring tape.
• Switch on the light localizer and align the cassette. Collimate the light field to
25 x 25 cm (10" x 10").
• Mark the four corners with coins and mark one of the corners with two coins (Fig. 5).
• Set 52 kV, 2.0 mAs on the control panel.
• Release an exposure.
• Develop the film and measure the deviation between the light and the radiation fields.
Acceptable deviation ± 1.7% of SID, (Fig. 6).
• If the deviation is more than 1.7%, adjust with the screws marked C and D (Fig. 2), to
move the light field closer to the radiation field.
• Repeat the test with a new exposure.
• If necessary, adjust again until the deviation between the light field and the radiation field
is within the tolerance specified.
• Reattach cover 1 (Fig. 1).
X-ray radiation!
If not observed, risk for exposure to radiation.
Use radiation protection!
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