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3.
Loosen the 8 leveling set screws, and then place the PMU (Post mount utility center) in
the cup of the chair bracket. Figure 3.1 Center the mounting post in the cup. Also verify if
the PMU is aligned straight with dental chair armrest.
4.
Verify the PMU is level before tightening the set screws on chair bracket. There are 8 set
screws that will be used for leveling. If the PMU is not level the unit arms may drift.
Small adjustments to the set screws will level the PMU. Level the PMU in the following
directions. (left to right and front to back).
Figure 3.1