Step 7:
D
ISENGAGING THE
D
OOR FROM
THE
O
PENER
P
ERIODIC
M
AINTENANCE
S
CHEDULE
M
ONTHLY
T
ASKS
A
In case of a power failure or if the door becomes obstructed.
•
Pull the red carriage release knob to disengage the carriage
from the opene (
Figure 1
)..
NOTE
Use caution if the door is open, the door may
drop rapidly.
•
Flip the carriage release lever up and raise or lower the door
to re-engage the opener.
PULL THE RED RELEASE
HANDLE TO DISENGAGE THE
OPENER FROM THE DOOR
FLIP THE
CARRIAGE
RELEASE
LEVER UP
Figure 1
Operating the release mechanism
A
Check the door
’sbalance
•
Close the garage door.
•
Disengage the door from the opener.
•
Raiseand lower the door manually.
– The doorshould move freely without sticking or binding.
•
Raise the door halfway open.
– The doorshould remain relativelystill.Aslow movement
isacceptable.
NOTE
If either of the above tests fail, call a professional garage
door installer to repair the door.
B
Test theSafe-T-Beam®System
•
Close the garage door.
•
Disengage the door from the opener.
•
Start the opener to run the bullet to the open position.
•
Start the bullet toward theclose position and block the
Safe-T-Beam®.
– The bullet should stop and reverse toward the
open position.
•
With the beam blocked,verify that constant pressure is
required on the wall button to make the bullet move toward
theclose position.
– Release the pushbutton before the bullet stopsand it
should reverse to the open position.
•
Verify that the remotecontrol will not move the bullet in
the down direction.
•
If either test fails,adjust the beam and retest.Seestep 1,page 7.
Step 8:
MAINTENANCE
WARNING
C
Testing thesafety reverse
•
Re-engage the door to the opener.
– Flip thecarriage release lever up.
– Raise the garage door manually until thecarriage
engageswith the bullet.
•
Raise the door to the fully open position.
Garage door hardware (springs, cables, brackets, pulleys,
etc.) are under extreme pressure and tension.
Do not
attempt to adjust any door hardware.Call a qualified
garage door installation professional.
WARNING
The garage door opener must not be installed on an
unbalanced door.The opener
’s internal force sensor will
not function properly on an unbalanced door.Risk of seri-
ous injury or death may result.
WARNING
Always perform the force safety test after making any
adjustments to the opener.
CAUTION
Every year, check the door hardware for lubrication
needs.Lubricate hinges, rollers and bearings according to
manufacturer
’s recommendation.
•
Placea2" x 4" board flat in thecenter of the garage
door opening.
•
Using the remote or wall button close the door.
– The door must reverse within 2secondsof contacting
the board.
•
If the test fails,adjust theclosing forceand retest. (SeeStep 5,
Page 11).
S
EMI
-
ANNUAL
T
ASKS
A
Check the belt tension (
Figure 1
).
•
On the bullet, measure the tension spring length.
– It should be 1".
•
If needed, turn the adjustment wheel until the tension
spring is about 1" long.
– A flat blade screwdriver can be used to turn the
adjustment wheel.
Figure 1
Belt tension
13
Summary of Contents for Quietlift 2M
Page 5: ...5 Figure1 Checking door balance...
Page 15: ......
