TSI Incorporated Alnor LoFlo Balometer Mode D'emploi page 11

Symptom
Meter does not turn on.
Meter reading lower than expected.
Meter reading higher than expected.
Meter not at zero at zero flow.
Meter displays Er.
Handle button not working.
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SECTION 8
Troubleshooting
Possible Cause and Corrective Action
•
Battery holder snap connector not connected. Connect
battery holder to instrument.
•
Batteries may be discharged. Charge or replace them.
•
Switch failure, wiring failure, or circuit failure. Call
TSI.
•
Wrong vent mode chosen. Choose correct vent mode,
open or closed.
•
Wrong air direction mode chosen. Choose correct
direction, supply or return.
•
Back pressure effects could be significant. Use 2-
point measurement mode.
•
Hood frame not sealing properly around diffuser or
grill. Press hood evenly against diffuser.
•
Odd air flow pattern present. Perform traverse and use
proportional balancing.
•
Hood torn. Replace, or repair tear with duct tape or
other non-porous material.
•
Meter out of calibration. Call TSI.
•
Damage to manifold. Call TSI.
•
Wrong vent mode chosen. Choose correct vent mode,
open or closed.
•
Wrong air direction mode chosen. Choose correct
direction, supply or return.
•
Odd air flow pattern present. Perform traverse and use
proportional balancing.
•
Meter out of calibration. Call TSI.
•
Instrument not at room temperature. Allow instrument
to acclimate before turning on the power.
•
The LoFlo is reading real room air currents. Place on
floor with a piece of cardboard over the top to
determine if it is measuring real air currents.
•
Meter out of calibration. Call TSI.
•
Self test failed. Call TSI.
•
Call TSI.
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