InnoVet Select
™
HF APR
Service Manual
24
2.4 Tube Arm, X-Ray Tube And Collimator Installation
NOTE:
The “Roll” potentiometer setting will be preset at the factory but will need to be
verified before installation of the tube arm. The following procedure is not a “roll”
potentiometer calibration, only a preset.
1.
Place the tube arm assembly on a known level surface and remove the “roll”
potentiometer assembly cover. (Two 10-32 screws) Verify the “roll”
potentiometer drive belt tension. Belt tension should be adjusted as to
prevent any slack within the drive belt wheels. If adjustment is required,
loosen the two 10-32 screws that secure the “roll” potentiometer assembly
and move the entire assembly left or right to achieve proper drive belt
tension. Ensure not to over tension the drive belt. Reinstall “roll”
potentiometer cover and hardware.
2.
Remove the 3/8-16 locking bolt. Measure the resistance of the “roll”
potentiometer across pins 1 and 4 on the DB9 connector or across pins 1
and 2 at the “roll” potentiometer. Resistance should read 5/- 20 at
0 degrees. If adjustment is necessary, rotate the tube arm shaft until the
correct resistance is achieved. Once proper resistance is set, install the tube
arm-locking knob to secure the tube mount to the tube arm shaft.
3.
Install the tube mount assembly by inserting the 1-1/2” diameter tube arm
shaft into the collar on the face of the tubestand. Ensure the tube arm shaft
is fully inserted, with the tube mount in the beam-down position. Secure the
shaft by tightening the two screws on the outside diameter of the collar.
WARNING
:
Do not remove the two hex head shipping bolts, which lock the main
counterweight and vertical carriage together until the tube, collimator, high
voltage cables and operators console have been mounted.
4. Mount
the
x-ray tube and collimator
. When using the standard tube and
collimator, two 1/8” spacers will achieve the proper field size
coincidence.
The standard tube has a part number of C458, and the
collimator G800 (refer to their respective manuals for detailed instructions as
needed).