Oil Burning Heat

Burner motors are manufactured only for one speed (RPM). While older burner motor (RPM) revolutions per minute vs. newer burner motor (RPM) revolutions per minute are different, a burner motor runs at 1 speed.

• True

• False

A newer oil burner motor is rated for ____ rpm, but some older burner motors are rated for ____ rpm.

• 1725, 1325

• 4450, 1725

• 3450, 1725

• 2450, 1550

Answer explanation

Newer oil burners utilize the faster burner motor, (3450 RPM)

The oil burner motor speed has to match the recommend speed to the ____.

• oil pump

• rating of the squirrel cage fan

• oil nozzle

• oil pump pressure

Tags

NGSS.MS-PS2-2

What are the different types of oil burner motors?

CHECK ALL THAT APPLY

• shaded pole

• split phase

• permanent split phase capacitor

• PSC

On a split phase motor, the run capacitor is always in the circuit.

• True

• False

Answer explanation

On split phase motor, there is no capacitors used.

A permanent split capacitor motor, also known as a _____ motor utilizes a ____ capacitor.

• RSC, run

• PSC, run

• RSC, start

• PSC, start

Tags

NGSS.HS-PS3-3

On an split phase oil burner motor, the start winding is _____.

• always in the circuit

• removed from the circuit once the motor reaches about 80% of the rated speed by a centrifugal switch

• removed from the circuit once the motor reaches about 50% of the rated speed by a centrifugal switch

• always in the circuit and once the motor reaches about 80% of the rated speed the run capacitor is removed from the circuit by a centrifugal switch

Answer explanation

On a split phase motor, if the start winding stays in the circuit once the motor gets up to speed the motor will have a high amp draw and trip out on thermal overload.

On a split phase oil burner motor the the centrifugal switch is ____.

• Normally Open, N.O.

• Normally Closed,

  N.C.

• Partially Open,

  P.O.

• Partially Closed,

  P.C.

Answer explanation

On a split phase motor the start switch is normally closed, this is needed to have the start winding energized for a short period of time to get the motor started.

On a split phase motor the _____ is wired in _____ to the centrifugal switch.

• run winding, parallel

• run winding, series

• start winding, parallel

• start winding, series

On a split phase motor the following can cause high amp draw which would trip the thermal overload, (open the thermal overload)?

CHECK ALL THAT APPLY

• Seized oil pump

• Seized motor shaft

• Start winding not removed form the circuit

• Burner motor over tightened to burner housing