Baker SterilGARD SG404, Service Manual, Page: 17 / 94

389D001 Rev G 17 of 94
Option 2 : Secondary Method using Thermal Anemometer (Constricted Method)
Remove the armrest and lower the cabinet sash to an access opening height of 3 inches (76 mm). Using a thermal
anemometer with or without Bakers’ secondary method fixture (#333A714), orient the probe tip facing upward at
the center of the vertical access opening (1.5” or 38 mm). Starting 3 inches from the left or right of the opening,
measure the intake velocity across the sash at the locations specified on the cabinet data plate. Refer to data label
affixed to the cabinet fascia panel for more information.
(NOTE: If the INTAKE velocity average is out of range, use the chart below to determine what balancing
adjustments are required to meet the airflow specification. If an adjustment is necessary, the downflow and
inflow values must be measured and recorded again.
APPROACHES TO BALANCING THE STERILGARD CABINET
IF THEN
INTAKE
Velocity
DOWNFLOW
Velocity
Low Low Turn up the speed control
High High Turn down the speed control
Low High Open cabinet exhaust damper
High Low Close cabinet exhaust damper
Low / High Ok Adjust both speed control and cabinet exhaust damper
Ok Low / High Adjust both speed control and cabinet exhaust damper
Ok Ok No adjustment Needed
3 Inch Method Template Free hand Procedure