John Bean 48109B, Installation And Operation Manual

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6.5 BLEEDING PROCEDURE
1. Once the main electrical power supply has been connected, turn the equalization adjustment
fully clockwise. The equalization adjustment is located on the powerpack controller board,
see Figure 4.
2.
Press the up control button and raise the lift 10” (254mm) above the ground. If the LED does
not illuminate, continue pressing the up button until the LED comes on.
3.
Lower the lift to the ground and hold the down button until the LED light goes off. This will
release air from the hydraulic system. Note: If the LED is not illuminated the lift will not
lower – press the up button and raise the lift until the LED comes on. Once the LED is
illuminated, the lift can be lowered.
4.
Repeat these steps 3-4 times to completely bleed the system of air. Check the lift for
hydraulic leaks at all connections. When complete, turn the equalization adjustment fully
counter clockwise.
5.
After bleeding, it is recommended that the filter assembly fitting (between the hydraulic hose
and the powerpack) be cleaned. Place the fitting on a workbench and use an air gun to blow
through the filter in the opposite direction to flow from the lift.
6.
Close the back cover of the Control Console making sure that all four hoses are routed
through the slot located at the bottom of the back cover.
6.6 AIR LINE INSTALLATION
1.
Remove the air line fittings from the accessory box.
2.
Raise the lift until the deck is at a suitable working height. Lower the lift until mechanical
safety locks engage.
3.
Assemble the fittings to the front of the left side deck as shown in Figure 5. Connect the 3/8”
polytube from the inside of the deck to the fitting assembly.
4.
Assemble the fittings to the rear of the right side deck as shown in Figure 5. Connect the
3/8” polytube from the inside of the deck to the fitting assembly.
5.
Remove one recoil hose from the accessory box and connect it to the rear fitting assembly as
shown in Figure 5. Run the recoil hose under the deck and connect the opposite end to the
air line on the scissors using the 3/8”JIC-M x 1/4”NPT-F adapter from the hardware kit.
6.
Install ¼” NPT plugs at front and rear of air kit to stop air flow when connecting air to lift.