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The Designer Series & P7 Industrial
common spring problems
symptom
possible cause
door raises from
cable length too long with cable not
the floor and
on high portion of drum
hangs down in
opening
springs may be too strong (too short)
wrong cable drums for springs (too
small)
door lifts from the
door is over tensioned. too many turns
floor and runs
on spring or wrong spring
away at the top
wrong cable drums for spring, (too
small)
door falls to the
door is under tensioned too few turns
floor and hangs
on spring or wrong springs
down in the
opening
wrong cable drums for springs (too
large)
door falls to the
lifting cable may be too short for high
floor and runs
lift cable drum or vertical lift drum and
away at the top
is sitting too high on the spiral portion
of the drum
torsion springs too long
door balances at
cables in wrong position on spiral of
the floor but runs
the drums
up or down in
between
poor balance
winding spring in wrong direction
throughout
door weight incorrect
springs binding
door not level
installation instructions
™
rememdy
shorten cable length until the cable rolls onto the
flat portion of the drum when the door starts into the
horizontal position
replace spring
replace cable drums
ensure that the correct spring is supplied (if not
replace) and that it has the correct number of turns
applied
replace cable drums
ensure that the correct spring is supplied (if not
replace) and that it has the correct number of turns
have been applied
replace cable drums
increase the cable length to bring the cable down
lower on the spiral
shorten springs
adjust cable length
wind in correct direction
supply correct springs
fit torsion bar collar
lubricate springs
cable lengths are equal
equal turns on both springs
level door during installation
17
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