DMTA-20073-01EN, Rev. C, November 2015
Chapter 4
56
The RollerFORM’s middle wheel can also be adjusted specifically for narrow surfaces.
Special care must be taken to ensure that both of the middle wheel’s rollers or the skid
plate make contact with the surface to inspect.
To adjust the middle wheel
1. Apply water couplant to the surface and to the RollerFORM scanner’s acoustic
wheel.
2. Unlock the middle wheel by positioning the locking lever in the UNLOCKED
position (see Figure 4-5 on page 56).
Figure 4-5 Unlocking the middle wheel
3. Turn the vertical adjustment knob clockwise to move the wheel up to the highest
position.
4. Using the RollerFORM handle, apply sufficient downward pressure on the
scanner until the wanted signal is obtained.
Locking lever in the unlocked position Vertical adjustment knob
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