Baltimore Aircoil Company VT0 Series Operating And Maintenance Instructions Manual page 14

It is recommended to provide sinus filters on the VFD to prevent bearing damage on fan motors.
CAUTION
Refer to fan motor nameplate data when programming a VFD.
The purpose of a low level cut out switch for pump protection is to protect the pump from running dry in case of
make-up failure or extreme water loss. The status of the alarm can be checked prior to pump start-up, but should
not be considered during the first minute after start-up, since activation of the pump can cause a water level drop,
that might trigger the alarm. Normal make-up will stabilize the water level after a short period of time.
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