HD-973P Series Multi-Level Parking Lift 56 P/N 5900076 — Rev. B3 — January 2024
The components involved include:
• Zero Angle Bracket. Attaches at the Mounting Bracket on the Power Post or to other available
holes on the Back Plate of the Power Unit. Holds the Pushbutton Air Valve, so be sure to orient the
Zero Angle Bracket so that the Lift operator can easily reach the Pushbutton Air Valve.
• Pushbutton Air Valve. Used to lower the Platforms.
• Tee Compression Fitting (P/N 5550395). Connects the Air Line coming from each Platform.
• Compression Elbow Fitting (P/N 5550087). Connects the Pushbutton Air Valve to the Air Line
coming from the Tee Fitting.
• Straight Fitting (P/N 5550486). Connects the Pushbutton Air Valve to the customer-supplied air
pressure. A minimum air pressure of 75 PSI / 3 CFM is required.
To install the Pushbutton Air Valve:
Find the necessary components: the Zero Angle Bracket, Pushbutton Air Valve, Compression
Elbow Fitting, Tee Compression Fitting, and Straight Fitting.
Connect the Zero Angle Bracket at the desired location (if it has not already been connected).
It can attach to an available hole on the Back Plate of the Power Unit or to one of the Bolts that
connect the Power Unit to the Mounting Bracket on the Power Post. The best location is one that
is visible and easily reached by the Lift operator.
Connect the Pushbutton Air Valve to the Zero Angle Bracket.
Connect the Compression Elbow Fitting and the Straight Fitting to the appropriate locations on the
Pushbutton Air Valve.
The Elbow Fitting connects to the opening labelled CYL. The Straight Fitting to the opening
labelled IN.
Attach a Tee Compression Fitting to connect the Air Lines coming out of each Flex Tube.
There is one Air Line per Platform.
Cut another Air Line to attach to other end of the Tee Fitting, then connect it to the Compression
Fitting on the Elbow Fitting and the customer-supplied air to the Straight Fitting.
Important: The Return Line also comes out of the Flex Tube and is the same kind of tubing as
the Air Line. Do not attach the Return Line to the Pushbutton Air Valve
by mistake. Double check to make sure you are attaching the Air Line to the
Pushbutton Air Valve.
For the customer-supplied air pressure, a minimum of 75 PSI.
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