Sears 139.53930D Garage Door Opener User Manual


 
Preparing your garage door
Before you begin:
Disable locks.
Remove any ropes connected to garage door.
Complete the following test to make sure your garage
door is balanced and is not sticking or binding:
1. Lift the door about halfway as shown. Release the
door. If balanced, it should stay in place, supported
entirely by its springs.
2. Raise and lower the door to see if there is any
binding or sticking.
If your door binds, sticks, or is out of balance, call a
trained door systems technician.
Toprevent possible SERIOUSINJURYor DEATH:
ALWAYScall a trained door systems technician if garage
door binds, sticks, or is out of balance An unbalanced
garagedoor maynot reversewhen required
NEVERtry to loosen, move or adjust garagedoor, door
springs, cables, pulleys, brackets or their hardware,all of
which are under EXTREMEtension
DisableALL locks and removeALL ropes connectedto
garagedoor BEFOREinstalling and operating garagedoor
openerto avoid entanglement.
iili
Toprevent damageto garage door and opener:
ALWAYSdisablelocks BEFOREinstalling and operatingthe
opener.
ONLYoperategaragedoor opener at 120V,60 Hzto avoid
malfunction and damage.
Sectional Door
One-Piece Door
Tools needed
During assembly, installation and adjustment of the
opener, instructions will call for hand tools as illustrated
below.
Stepladder
Level (optional) Pencil
Tape Measure
16 it6
Dnll D_ Wire Cutters
and 5/32"
and 1/4"
Hack Saw
Screwdriver
Adjustable End Wrench