DU-AG-0021-25 Rev C 1/09/07 GCX Corp. Page 6 of 7
WARNING
• Do not attempt to adjust height without instrument being mounted on Arm.
• Use caution when disengaging the Height Locking Lever. The total mounted load may have
changed due to the addition or removal of equipment (other than primary instrument) while
the Height Locking Lever was engaged. A change in the total load can cause a sudden
downward or upward movement of the Arm when the Height Locking Lever is disengaged.
Adjusting Height of the Mounted Instrument
1. Grasp mounted instrument on sides (or handle) and move to desired height. When Arm is counterbalanced correctly
(page 4), it will maintain position when adjusted to a new height.
Note:
Disengagement/re-engagement of the Height
Locking Lever may be necessary during vertical adjustment of mounted instrument (see
WARNING
above).
Engagement of the Height Locking Lever is not required during normal operation of the counterbalanced instrument.
Positioning VHM Arm in Channel
1. Lock the Arm position using the Height Locking Lever.
2. Using the 1/8'' hex wrench provided, loosen four (4) set screws in Slide.
3. Relieve the weight of the mounted instrument by lifting against the underside of the
Arm, near the instrument. Simultaneously, push up or pull down the opposite end of
the Arm immediately in front of the Slide.
4. Tighten four (4) set screws.
Use caution when disengaging the Height Locking
Lever. The total mounted load may have changed
due to the addition or removal of equipment (other
than primary instrument) while the Height Locking
Lever was engaged. A change in the total load can
cause a sudden downward or upward movement
of the Arm when the Height Locking Lever is
disengaged.
Instrument Must Be Mounted
