244 Table Control Box Test and Repair

244 Table Control Box

Line voltage (115 VAC) is supplied to the control box thru the two fuses in the power inlet. An indicator light on the control box illuminates when power is present. The control box reduces the voltage and supplies approximately 5 VDC to the base cover limit switch circuit.

During normal operating conditions, current flows thru all four normally-closed switches, then to the hand control.

With the hand control cord properly connected, current continuously flows back to the control box thru separate wires for each table function. When a function is selected from the hand control, this "signal voltage" is removed from the wire corresponding to the selected function.

When the signal voltage is removed, the control box activates the selected function and supplies 24 VDC to the appropriate actuator(s).

244 Table Control Box

Removal

1.Disconnect power to table.

2.Remove bottom cover.

3.Tag and disconnect wiring.

4.Remove control box.

Installation

1.Install control box.

2.Connect wiring.