Autoquip GATES SWING - Manual (Page 27)

INSTALLATION INSTRUCTIONS
G.A.L. INTERLOCK (TYPE SDM) – Bi-Part Swing Gates
The G.A.L. Type SDM interlock is used on bi-part swing gates only. Installation of the
interlock is done after the gate has been erected and secured in position. The following
instructions will apply to all bi-part swing gates, and to either the lower or upper levels.
The G.A.L. interlock is a “self-contained” device with the gate status switch located
within the interlock body. In operation, the striker, which is mounted to the gate panel,
is used to complete the electrical circuit when the gate is closed. The completion of this
circuit allows the lift motor to run and move the carriage away. When the platform has
moved away, the actuating arm returns to its normal position and captures the strike to
prevent the gate from being opened.
1. With the hardware provided, mount the interlock to the mounting pad welded to the
gate header (see Figure 14).
2. Using the ¼”-20 UNC hardware supplied, bolt the strike to the mounting pad on each
gate panel (see Figure 14).
3. Install the actuator shaft into the interlock with the hardware provided. The shaft will
need to be cut off ½” longer than the corner linkage after it is installed (see Figure
13).
4. Install the corner linkage to the gate post (see Figure 15).
5. Install the mid-position linkage to the gate post (see Figure 16). The actuator arm
is rotated down when the platform is at the lower level, and up when the platform is
at the upper level. The linkage position will need to be selected depending on which
level the gate is installed (see Figures 17 & 18).
6. Verify operation to assure locking when the platform is moved away from this
level and that the lock releases when the platform is returned.
7. Verify operation of the upper level gate.
NOTE:
The cam must rotate the actuator arm in the upward direction at the upper
level and rotate down on the lower level.
8. When the cam location has been verified, weld it to the platform.
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