Chamberlain 1300 27

ALL ONE-PIECE DOORS	Door	Ring
1. Assemble the door arm, Figure 4:	Bracket	Ring
1. Assemble the door arm, Figure 4:		Fastener	Nuts
• Fasten the straight and curved door arm sections		Lock	Nuts
• Fasten the straight and curved door arm sections		Lock	5/16"-18
together to the longest possible length (with a 2		Washers
together to the longest possible length (with a 2		5/16"

or 3 hole overlap).	Clevis Pin	Straight
• With the door closed, connect the straight door	5/16"x1-1/4"	Arm
• With the door closed, connect the straight door		Bolts
arm section to the door bracket with the		Bolts	Curved
arm section to the door bracket with the		5/16"-18x7/8	Curved
5/16"x1-1/4" clevis pin.	Figure 4	5/16"-18x7/8	Door Arm
5/16"x1-1/4" clevis pin.	Figure 4		Door Arm
• Secure with a ring fastener.	- Press the Door Control push button. The trolley
2. Adjustment procedures, Figure 5:	- Press the Door Control push button. The trolley
2. Adjustment procedures, Figure 5:	will travel to the fully closed position.
• On one-piece doors, before connecting the door	will travel to the fully closed position.
• On one-piece doors, before connecting the door	- Manually close the door and lift the door arm to
arm to the trolley, the travel limits must be	- Manually close the door and lift the door arm to
arm to the trolley, the travel limits must be	the trolley. The arm should touch the trolley just
adjusted. Limit adjustment screws are located on	the trolley. The arm should touch the trolley just
adjusted. Limit adjustment screws are located on	ahead of the door arm connector hole. Refer to
the left side panel as shown on page 28. Follow	ahead of the door arm connector hole. Refer to
the left side panel as shown on page 28. Follow	the fully closed trolley/door arm positions in the
adjustment procedures below.	the fully closed trolley/door arm positions in the
adjustment procedures below.	illustration. If the arm is behind the connector
• Open door adjustment: decrease UP	illustration. If the arm is behind the connector
• Open door adjustment: decrease UP	hole, adjust the limit further. One full turn equals
travel limit	2" (5 cm) of trolley travel.
- Turn the UP limit adjustment screw counter-	3. Connect the door arm to the trolley:
clockwise 5-1/2 turns.	• Close the door and join the curved arm to the
- Press the Door Control push button. The trolley	• Close the door and join the curved arm to the
- Press the Door Control push button. The trolley	connector hole in the trolley with the remaining
will travel to the fully open position.	clevis pin. It may be necessary to lift the door
- Manually raise the door to the open position	slightly to make the connection.
(parallel to the floor), and lift the door arm to the	• Secure with a ring fastener.
trolley. The arm should touch the trolley just in	• Run the opener through a complete travel cycle. If
back of the door arm connector hole. Refer to	• Run the opener through a complete travel cycle. If
back of the door arm connector hole. Refer to	the door has a slight "backward" slant in full open
the fully open trolley/door arm positions in the	the door has a slight "backward" slant in full open
the fully open trolley/door arm positions in the	position as shown in the illustration, decrease the
illustration. If the arm does not extend far	position as shown in the illustration, decrease the
illustration. If the arm does not extend far	UP limit until the door is parallel to the floor.
enough, adjust the limit further. One full turn	UP limit until the door is parallel to the floor.
enough, adjust the limit further. One full turn	NOTE: When setting the up limit on the following
equals 2" (5 cm) of trolley travel.	NOTE: When setting the up limit on the following
equals 2" (5 cm) of trolley travel.	page, the door should not have a "backward" slant
• Closed door adjustment: decrease DOWN	page, the door should not have a "backward" slant
• Closed door adjustment: decrease DOWN	when fully open as illustrated below. A slight
travel limit	when fully open as illustrated below. A slight
travel limit	backward slant will cause unnecessary bucking
- Turn the DOWN limit adjustment screw	backward slant will cause unnecessary bucking
- Turn the DOWN limit adjustment screw	and/or jerking operation as the door is being opened
clockwise 5 complete turns.	or closed from the fully open position.
Figure 5
Inner Trolley
Outer Trolley
Door Arm
Connector Hole
Door Arm
Emergency Release Handle
Closed
Door
Inner Trolley
		Outer Trolley
Correct Angle	Door Arm
Correct Angle
	Door with
Open Door	Backward Slant (Incorrect)