Craftsman 139.18054 Owner's Manual

5AccessDoorSafetyReversing SensorSafetyReversingSensorGap between floorand bottom of doormust not exceed1/4" (6 mm)Planning (continued)ONE-PIECE DOOR INSTALLATIONS• Generally, a one-piece door does not requirereinforcement. If your door is lightweight, refer tothe information relating to sectional doors inInstallation Step 11.• Depending on your door’s construction, you mayneed additional mounting hardware for the doorbracket (Step 11).Safety Reversing SensorSafety Reversing SensorGap between floor and bottomof door must not exceed 1/4" (6 mm)Access DoorONE-PIECE DOOR WITHOUT TRACKHeaderBracketTrolleyStraightDoorArmEmergencyReleaseRope & HandleDoor BracketCurvedDoorArmHeaderWallCableRailGarage DoorTrolley Stop BoltCLOSED POSITIONONE-PIECE DOOR WITH TRACKWithout a properly working safety reversal system,persons (particularly small children) could beSERIOUSLY INJURED or KILLED by a closinggarage door.• The gap between the bottom of the garage door andthe floor MUST NOT exceed 1/4" (6 mm). Otherwise,the safety reversal system may not work properly.• The floor or the garage door MUST be repaired toeliminate the gap.WARNINGCAUTIONDoorBracket StraightDoorArmGarageDoorCLOSED POSITIONHeaderBracketCurvedDoor ArmChainEmergencyReleaseRope &HandleCableHeaderWallRailTrolley Stop Bolt