Merik 711MD Manual Del Usuario página 31

ADJUSTMENT STEP 3
Test the Safety Reversal System
Garage Door Installation
TEST
• With the door fully open, place a 38 mm obstacle on
the floor, centered under the garage door.
• Operate the door in the down direction. The door must
reverse on striking the obstruction. Upon successful
safety reversal test proceed to Adjustment Step 4.
ADJUST
• If the door stops on the obstruction, it is not traveling
far enough in the down direction. Complete Adjustment
Step 1 and 2 Programming the Limits and Forces.
NOTE: On a sectional door, make sure limit
adjustments do not force the door arm beyond a
straight up and down position. See Figure 3 on
page 27.
• Repeat the test.
• When the door reverses on the 38 mm obstacle,
remove the obstruction and run the opener through 3 or
4 complete travel cycles to test adjustment.
• If the unit continues to fail the Safety Reverse Test, call
for a trained door systems technician.
IMPORTANT SAFETY CHECK:
Test the Safety Reverse System after:
• Each adjustment of door arm length, limits, or force
controls.
• Any repair to or adjustment of the garage door
(including springs and hardware).
• Any repair to or buckling of the garage floor.
• Any repair to or adjustment of the opener.
Gate Installation
TEST
The opener must reverse if the gate comes in contact with
an obstruction. A closing gate should reverse with little
effort, and open completely. See Adjustment Step 2.
• Use 38 mm board laid flat against the wall or gate
edge.
• SLIDING GATE DOOR, place a 38 mm board between
the door and wall of a closing gate. Gate must reverse
on the board and open completely. Repeat at opposite
wall if two openers are installed.
• SWING OUT GATE, insert a 38 mm board between the
closing gate sections. Gate sections must reverse and
swing open completely.
ADJUST
•
If the gate stops on the obstruction, it is not traveling far
enough in the closing direction. See adjustment step 1
Program the Travel Limits. Repeat Test.
• When the gate reverses on a 38 mm board, remove the
obstruction and run the opener through complete travel
cycle to test adjustment.
If the gate will not reverse after repeated adjustment
attempts, call for professional gate service.
WARNING
Without a properly installed safety reversal system,
persons (particularly small children) could be CAUTION
SERIOUSLY INJURED or KILLED by a closing garage
door.
• Incorrect adjustment of garage door travel limits will
interfere with proper operation of safety reversal
system.
• NEVER use force adjustments to compensate for a
binding or sticking garage door.
• If one control (force or travel limits) is adjusted, the
other control may also need adjustment.
• After ANY adjustments are made, the safety reversal
system MUST be tested. Door MUST reverse on
contact with a 38 mm obstacle on the floor.
SECTIONAL DOOR
38 mm Obstacle
SLIDING GATE
38 mm
Obstacle
SWINGING GATE
31
ONE-PIECE DOOR
38 mm Obstacle
38 mm Obstacle