Chamberlain GA400D, GA420D Set the Lock/Bipart Delay, Connect Gate Operator (Gate 2) to Control Box (Model GA420D Only), Outside Property, Outside Property, LOCK/BIPART DELAY

Connect Gate Operator (Gate 2) to Control Box (Model GA420D Only)

Occasionally in dual gate installations, one gate would need to open first and close second. This would happen if there was an ornamental overhang on one gate or if using a solenoid lock, for example. This gate is called the Primary gate and needs to be connected to Gate 1 connections on the control board. Thus, it is preferred that the control box be installed on the same side as this gate. If there is no appropriate location on that side for the control box, then mount the control box on the opposite side, but connect the operator closest to the control box to the Gate 2 connector and the operator on the opposite side to the Gate 1 connector.

Set the Lock/Bipart Delay

The LOCK/BIPART DELAY switch on the control board needs to be set to the ON position.

The following illustration shows a dual gate configuration with a decorative overlapping piece on the outside of the gate.

Outside Property

Primary Gate - Connect to Gate 1 Connector on Control Board.

Primary Gate

Outside Property

				ON			OFF
				LOCK/
				BIPART DELAY
						C7Ø
						C71
			18
					GATE 1
					LEARN
					LIMITS
					GATE 2
	24V
	BR
	GR
	WH
	YL
	BL
	RD
30		30	Control

If a solenoid lock is being used on a gate, the gate with the lock attached to it would be the primary gate.

25 Wiring