Programming instructions

DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1-37
1.8.7 Basket Lift Malfunctions
1.8.7.1 Bell-Crank Basket Lifts
Most Decathlon Series gas fryers are
equipped with a bell-crank style
basket lift: A cam and bell crank are
connected to the basket lift arm by a flat
metal link. The cam is attached to a
drive motor. The motor rotates the cam,
thus raising or lowering the lift arm
linked to the bell crank. A roller-
activated microswitch is used to limit
travel. When the roller in the
microswitch is in contact with the cam,
the motor is energized. As the cam
rotates, the roller loses contact with the
cam and the motor power circuit is
broken, de-energizing the motor.
Timing circuitry in the controller
initiates and stops basket lift operation.
When the product button is pressed, the
timing circuitry activates a coil in the
basket lift relay to supply power to the
motor. The microswitch stops the motor
at the lift’s lower travel limit and the
switch contacts are reversed. At the end
of the programmed cooking time, the
timing circuit activates the coil once
more and the lift rises until the
microswitch again loses contact with
the cam, opening the motor power
circuit and stopping the motor.
Problems with the bell-crank basket lift system can be grouped into two categories:
• Binding/jamming
• Motor and gear problems
Binding/Jamming
Noisy, jerky or erratic movement of the lifts are usually due to lack of lubrication of the lift arm
connection points. Apply a light coat of Lubriplate or similar lightweight white grease to the
connection points to correct the problem.
Back view of bell-crank basket lift.
Bell-crank basket-lift arms.