Does Not Open / Close, Incomplete Movement Or Is Slow; Barrier Is Not Quite Vertical / Horizontal - Chamberlain LiftMaster BARS1 Mode D'emploi

13.4

Does not open / close, incomplete movement or is slow

Description
Barrier does not close resp. does not close as desired
(see also: Does not open)
Barrier moves faster in upward direction than down-
wards
Barrier moves faster in downward direction than
upwards
Barrier hits hard in final position

13.5 Barrier is not quite vertical / horizontal

Description
Barrier pole hangs down (generally)
Additionally for articulated pole 90° and folding pole
180°
Remedy / Reason / Solution
- barrier has been released
- a connected accessory item fails
(switch, push button, loop, Photocell)
- wrong setting of motor type to control unit
- limit switch already triggered; loose
- no barrier pole mounted
- motor too warm (see: Does not open
- wrong spring in use ? exchange
- spring incorrectly adjusted
- wrong drilling for spring used in deflection
lever
- barrier pole does not correspond to spring
(too light)
- check: barrier pole must be balanced
- wrong spring
- barrier pole too heavy
- check: barrier pole must be balanced
- spring damaged
- wrong drilling for spring used in deflection
lever
- check: barrier pole must be balanced
Remedy / Reason / Solution
- has been bent forcefully. Pole has been
bent up/down while in closed position
- limit switch not tightened and thus mis
aligned
- connecting arm (motor or rotation axle) has
not been tightened according to regulation
and has misaligned itself
- limit stop buffers worn / knocked out
- re-install 1: mounting plate which has been
fixed to barrier is wrongly positioned
- re-install 2: linkage has not yet been
adjusted properly. See Installation and
Adjustment in the instructions.
- Linkage screws have been loosened and
have misaligned themselves
36/40
Notes