Mueller Roll-Up Door C250 - Manual (Page 10)

10 877-2-MUELLER
Dual Tensioner
Mounting
Plate
Door Jamb
Tighten
These Bolts
Guide
STEP 11: ELECTRIC DRIVE END (OPTIONAL)
B Once door is properly aligned tighten bolts to
mounting bracket flange.
STEP 12: POSITION DOOR
A Install as per instructions provided in electric operator kit
B If electric operator has a drive chain, do not attach until
door spring tension has been adjusted in step 15
A With door still wrapped and banded. Push door
assembly as close as possible toward header and still
be able to rotate freely. Each end of door should be
equal distance from the header and the curtain must
be centered in the door opening.