Question:
I guess they use the same type of stops on the up and down
position like conventional garage door openers. Its suppose to stop
when the contacts are open (and this one does not?) then the problem is
the contacts on the stops for both the up and down?, it might just need
adjusting, if the contacts are open then where does it get electricity
from to keep on going? unless the springs are pulling it up more than
needed or when going down the springs are weak and not letting it down
gently? doubt you would get both a harsh up and a harsh down? either
one or the other, but not both? it seems that it needs to be adjusted
slightly, both in the up and down position..... If you cannot adjust it
yourself then contact a garage door company and see what they charge to
come out and adjust the contacts? probably cheaper than replacing the
whole setup, cause thats what will be needed if its not corrected, or
maybe even a new door will be needed as it might just pull it off the
track?
Answer:
The unit does not have conventional up/down control that can be
adjusted. The Up has simple electrical contact that "grounds-out the
line" according to the company. The Down has a magnetic proximity
switch that has to be placed on the door and header just at the point
closure.
I have had a bad experience with the Miracle Instrument Co on their
Garage Door Opener that is designed for low overhead space.
In my opinion it has a poorly designed stopping mechanism because
the motor does not stop when the up/down contacts are activated but
instead it just slows down to an eventual halt: In the up direction
it rolls about 10 inches past the contact point, in the down direction
the door bangs to a stop while the motor continues to spin until its
momentum ceases which causes torque build up on the tract and wear on
the contact wheels. Instillation of the unit does not require a rocket
science degree but neither is it as simple as 1,2,3 as was highly touted
by the company. I had to be lucky and catch the right individual when I called
otherwise calls were never returned.
