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Oval 80
v.2
and Sentinel
v.2
Radiant Tube Heaters
www.lbwhite.com
Owner’s Manual • Oval 80
v.2
and Sentinel
v.2
20
Air Differential Pressure
Switch, Tubing and
Orifices.
Air inlet plate orifi ce:
See Fig. 21. Ensure this ori
fi
ce is free of dust. If the
ori
fi
ce is plugged, remove the two screws that hold
the plate to the burner box. Clean using compressed
air.
FIG. 21
Pressure switch tube:
See Fig. 22. Check for
blockage. Clean with compressed air after removing
the tube from the switch and the air inlet plate ori
fi
ce.
FIG. 22
Motor and Fan Assembly
1. Disconnect motor leads.
2. Remove the four (4) motor mounting screws.
See Fig. 19.
FIG. 19
3. Remove motor/fan wheel assembly from fan housing.
See Fig. 20.
FIG. 20