Operator runs but the door does not move; the trolley carriage slides without engaging the door arm.

Safety first: Ensure the door is closed or securely supported before re-engaging the operator.

• Check manual release: Locate the red release cord on the Garador rail. Pull it toward the door or operator as specified in the manual to re-engage the carriage.
• Move carriage: Slide the carriage along the rail until it locks onto the door arm bracket. You may need to run the operator briefly to allow it to catch.
• Inspect carriage: If the latch will not stay engaged or plastic parts are cracked, replace the trolley carriage with a genuine Garador part.
• Test operation: Run the door through a full cycle to confirm reliable engagement.