Remove the gear motor and the capacitor.
(a) Remove the junction box cover, disconnect the motor wires, and
remove the motor leads from the box. Refer to figure 3-4.
(b) Remove the three motor mounting screws and slide the motor
forward to disengage from the chain. Lift the motor and the capacitor out.
Repair or replace the chain as necessary.
Install the new gear motor and the capacitor.
(10) Reconnect all of the electrical leads in the junction box so that the motor
is ready to operate.
(11) Reconnect the external power source.
(12) Run the motor counterclockwise until it stops to correspond to the raised
condition of the lift.
On the PLR-200, the lift will not operate without the jumper cord originally
shipped with the lift. If the jumper cord is not available, you must connect the
receptacle to the chair cord. Refer to figure 3-5.
(13) Check the lift to ensure that it is blocked to its highest position. Make
adjustments as required.
(14) Engage the chain drive upon the sprockets and replace the three
mounting screws. Pull the motor to tighten the drive chain while tightening the mounting
screws. Refer to figure 3-2.
(15) Remove the wood block from the pantograph arms.
The lift must not over travel to the point where the pantograph arms
close up under power. Otherwise serious damage will occur. There
should be at least 5/8 inch of space remaining between the parallel
pantograph arms when the motor stops at the low lift position.
(16) Run the lift down to check the lower extreme position.
(17) Adjust the height of the lift using a 7/16 inch open-end or box wrench.
Loosen the locknut on the adjusting screw (Switch "A" on PLR-200) (refer to figure 3-6)
and turn clockwise (refer to figure 3-3) to raise the lower limit of the lift. Turn
counterclockwise to decrease the lower limit of the lift. Each full turn of the adjusting
screw changes the lift height 9/16 inch.