Autoquip PDQ DOCK LIFT - Manual (Page 16)

16
Familiarize yourself with this operator’s manual before operating the
equipment!!!
1. Scissors lifts have maximum lifting capacity ratings (see “Specifications” section).
The safety relief valve has been factory set to open at a pressure slightly above the
rated load capacity and allows the oil to bypass into the reservoir to prevent damage
to the lift and its hydraulic power unit. The safety relief valve should not be
adjusted for any reason as it could cause the motor to prematurely burn out.
Applying loads exceeding the rated capacity of the lift may result in excessive wear
and damage to the lift.
2. This type of lift is designed primarily for dock applications and is typically furnished
with constant pressure pushbutton controls. Actuating the "UP" button will cause oil
to enter the cylinders and the lift will rise.
3. When the desired height or upward travel of the platform is attained, removing
pressure from the switch deactivates the “UP” circuit button. The oil stops flowing
and the upward
movement will stop.
4. To lower the lift, activate the "DOWN" button. Opening the down control valve
allows the oil in the cylinders to flow through the down valve at a controlled rate and
return oil to the reservoir.
5. When the desired height or downward travel of the platform is attained, removing
the operator’s foot or hand from the switch deactivates the “DOWN” circuit. The oil
stops flowing from the cylinders and the downward movement will stop.
CAUTION!
Do not continue to activate the "UP" button if the lift is not raising or if it
has reached the fully raised position. To do so may result in permanent
damage to the lift.
CAUTION!
Do not operate the power unit on relief for more than a few seconds. When
on relief, the valve will make an audible squealing sound.
OPERATING INSTRUCTIONS