Instruction Manual

16
Chapter 3: Getting Started
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6. Once the sheave is adjusted to the correct spacing, secure
the set screw on the front half of the sheave.
7. Raise the motor up on the gravity belt tightener, and re-
install the belt on both sheaves.
8. Turn the blower back on at the roof disconnect.
9. Check the motor current with an ammeter to ensure it is in
its proper operating range. Consult Chapter 4 for amperage
specifications for your particular model.
10. Verify the hood face velocity is in its proper range. This
should be done across the sash opening of the hood in
accordance with the “Industrial Ventilation Manual”
section on laboratory hoods. Labconco recommends an
average face velocity of 60, 80, or 100 feet per minute.
Consult Labconco for proper airflows for your particular
model.
11. Replace the weather cover over the motor/drive
compartment.