Adjust The Force - Chamberlain 1000SD 1/3 HP Owners Manual

Adjustment Step 2

Adjust the Force

stop up
down
nuisance reversals
stops up
8
7
5
Kg
Test the DOWN (close) force
Reversal halfway through down travel does not
guarantee reversal on a one-inch obstruction. See
page 26.
Test the UP (open) force
reverse
down
8
1 1
7
3 3
5
Kg
How and When to Adjust the Forces
WARNING
Too much force on the door will interfere with the proper
operation of the safety reverse system. The door might
not reverse properly when required and could seriously
injure or kill someone under it. Do not increase the force
beyond the minimum amount required to close the door.
Do not use the force adjustments to compensate for a
binding or sticking garage door. Test the safety reverse
CAUTION
system monthly, and following all adjustments to force
levels. See page 26.
1 2 3
8 8
1
1
7 7
3 3
5 5
Kg
Kg
If the door doesn't open at least 5 feet:
If the door reverses during the down (close) cycle and
the opener lights aren't flashing:
the force beyond the minimum amount required to
close the door.
+
+
Do not increase
WA