Labconco PuriCare 3820000, User Manual, Page: 31 / 52

Chapter 6: Maintaining Your PuriCare
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Speed Control Adjustments
The Open Access Station blower speeds should only be adjusted
by a qualified certification technician. Adjustment of the
impeller and/or blower speeds will affect the containment of the
unit.
The Open Access Station uses two independent speed controls
to control the upper impellers (Supply Air) and the lower
Motor/Blower (Exhaust Air)
1. Locate the two plugged speed control access holes located on the lower rear panel
as shown in Figure 6-4.
2. Gently pry out the chrome plugs to gain access to the speed control adjustment
screws. The screw on the left side controls the lower Motor/Blower, the one
on the right controls the upper impellers.
3. Turn the screw(s) counterclockwise to increase the speed, clockwise to
decrease it.
Turning the speed control adjustment screw all the way
counterclockwise will shut the speed control circuit off and the
motor(s) will stop. If this occurs, turn the screw clockwise until
the motor(s) start running again.
4.
After adjusting the appropriate speed control, measure the downflow velocities
or Inflow Volume as needed.
!
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Figure 6-4
Lower Motor / Blower Speed Control
Upper Impeller Speed Control