LiftMaster T T LOGIC CONTROL VERSION 2 Manual - Page 7

Entrapment Protection Accessories (optional), Limit Switch Adjustment - travel adjustment

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ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL) PHOTO EYES & SENSING EDGES Sensing devices supplied for door industry type operators with an isolated normally open (N.O.) dry contact output are compatible with your operator. This includes pneumatic and electric edges, and through beam and retro reflective photo eyes. If your door does not have bottom safety photo eyes or a sensing edge and you wish to add a safety device to your application, please contact your local LiftMaster Authorized Dealer. If not pre-installed by the door manufacturer, mount the sensing edge on the door according to the instructions provided with the edge. The sensing edge may be electrically connected by either coiled cord or take-up reel. Important Notes: a. Proceed with Limit Switch Adjustments before making any sensing edge wiring connections to operator as described below. b. Electrician must hardwire the junction box to the operator electrical box in accordance with local codes. NOTICE It is strongly recommended that a SAFETY PHOTO EYE OR SENSING EDGE BE USED IN CONJUNCTION WITH THE OPERATOR. WIRING: For wiring of your sensing device to the operator, refer to the wiring diagrams supplied on pages 13 and 14. See field connection terminals identified as Reversing Device. TAKE-UP REEL: Take-up reel should be installed 12" above the top of the door. COIL CORD: Connect operator end of coil cord to junction box (not supplied) fastened to the wall approximately halfway up the door opening. LIMIT SWITCH ADJUSTMENT MAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS BEFORE PROCEEDING WITH ADJUSTMENTS. 1. To adjust limit nuts depress retaining plate to allow nut to spin freely. After adjustment, release plate and ensure it seats fully in slots of both nuts. 2. To increase door travel, spin nut away from actuator. To decrease door travel, spin limit nut toward actuator. 3. Adjust open limit nut so that door will stop in open position with the bottom of the door even with top of door opening. 4. Repeat Steps 1 and 2 for close cycle. Adjust close limit nut so that actuator is engaged as door fully seats at the floor. WARNING TO AVOID SERIOUS PERSONAL INJURY OR DEATH FROM CAUTION ELECTROCUTION, DISCONNECT ELECTRIC POWER BEFORE MANUALLY MOVING LIMIT NUTS. If other problems persist, call our toll-free number for assistance: 1-800-528-2806. CLOSE Limit Switch OPEN Limit Switch Actuator SAFETY Retaining Plate (Aux. Open) Limit Switch 7

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7
TO AVOID SERIOUS PERSONAL INJURY OR DEATH FROM
ELECTROCUTION, DISCONNECT ELECTRIC POWER BEFORE
MANUALLY MOVING LIMIT NUTS.
WARNING
MAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS BEFORE
PROCEEDING WITH ADJUSTMENTS.
If other problems persist, call o
u
r toll-free n
u
mber for
assistance: 1-800-528-2806.
1.
To adj
u
st limit n
u
ts depress retaining plate to allow n
u
t
to spin freely.
After adj
u
stment, release plate and
ens
u
re it seats f
u
lly in slots of both n
u
ts.
2.
To
increase
door travel, spin n
u
t
away
from act
u
ator.
To
decrease
door travel, spin limit n
u
t
toward
act
u
ator.
3.
Adj
u
st open limit n
u
t so that door will stop in open
position with the bottom of the door even with top of
door opening.
4.
Repeat Steps 1 and 2 for close cycle. Adj
u
st close limit
n
u
t so that act
u
ator is engaged as door f
u
lly seats at
the floor.
Retaining Plate
CLOSE
Limit S
w
itch
SAFETY
OPEN
Limit S
w
itch
Actuator
(Aux. Open) Limit S
w
itch
PHOTO EYES & SENSING EDGES
Sensing devices s
u
pplied for door ind
u
stry type operators
with an isolated normally open (
N
.O.) dry contact o
u
tp
u
t
are compatible with yo
u
r operator. This incl
u
des
pne
u
matic and electric edges, and thro
u
gh beam and retro
reflective photo eyes.
If yo
u
r door does not have bottom
safety photo eyes or a sensing edge and yo
u
wish to add
a safety device to yo
u
r application, please contact yo
u
r
local LiftMaster A
u
thorized Dealer.
If not pre-installed by the door man
u
fact
u
rer, mo
u
nt the
sensing edge on the door according to the instr
u
ctions
provided with the edge.
The sensing edge may be
electrically connected by either coiled cord or take-
u
p reel.
Important Notes:
a. Proceed with Limit Switch Adj
u
stments before making
any sensing edge wiring connections to operator as
described below.
b. Electrician m
u
st hardwire the j
u
nction box to the
operator electrical box in accordance with local codes.
ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)
WIRING:
For wiring of yo
u
r sensing device to the operator, refer to
the wiring diagrams s
u
pplied on pages 13 and 14.
See
field connection terminals identified as Reversing Device.
TAKE-UP REEL:
Take-
u
p reel sho
u
ld be installed 12"
above the top of the door.
COIL CORD:
Connect operator end of coil cord to
j
u
nction box (not s
u
pplied) fastened to the wall
approximately halfway
u
p the door opening.
It is strongly recommended that a SAFETY PHOTO EYE OR
SENSING EDGE BE USED IN CONJUNCTION WITH THE
OPERATOR.
NOTICE
LIMIT SWITCH ADJUSTMENT