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ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)
SAFETY EYES:
Compatible with Liftmaster CPS-LN4 direct connect failsafe
photoeyes.
SENSING EDGES
All types of sensing edges with an isolated normally open
(N.O.) output are compatible with your operator. This
includes pneumatic and electric edges. If your door does
not have a bottom sensing edge and you wish to purchase
one, contact the supplier of your operator.
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.
Refer to the steps below.
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.
THE LIMIT SWITCHES WILL STOP THE DOOR AT EACH
END OF TRAVEL. ADDITIONAL LIMIT SWITCHES CAN
BE USED FOR CONTROL OF OTHER AUTOMATIC
FUNCTIONS.
NOTE: Before starting adjustment of the limit switches,
loosen or tighten (if necessary) the lock nut in order to
obtain a convenient adjustment tightness of the cam
wheels. After finishing the adjustments, make sure that the
lock nut is sufficiently tight 1 NM (8"LBS) to retain the cam
wheels securely during operation.
When door is in the fully open position, the green cam
wheel (Open) will be tur ned into contact with its
corresponding switch. In the same way, just before the
door is in the closed position, the black cam wheel (Closed)
will activate its switch.
Lock Nu
t
Auxiliary Limit Switches
(When Supplied)
Adjustment Screw
Close Limit (Black)
Open Limit (Green)
LIMIT SWITCH ADJUSTMENT
LIMIT BOX ON POWERHEAD
4
IT IS STRONGLY RECOMMENDED THAT A
SENSING EDGE OR OTHER ENTRAPMENT
PROTECTION
DEVICE
CONJUNCTION WITH THIS OPERATOR.
WIRING:
For wiring of your sensing device to the operator,
refer to the wiring diagram supplied with your
operator. See field connection terminals identified as
Sensing Device or Safety Edge.
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.
COARSE ADJUSTMENT
The coarse adjustment of the limit switches can be done by
inserting a rod or a screw driver into one of the adjustment
holes in the cam wheels and by turning each cam wheel
with the rod or screw driver.
FINE ADJUSTMENT
Fine adjustment can be done by screwing the adjustment
screw (supplied) against the cam shaft thread inside each
cam wheel. The screw must be changed from one
adjustment hole into the other for turning the cam wheel in
the opposite direction.
FINE
ADJUSTMENT
COARSE
ADJUSTMENT
BE
USED
IN
CCW
CW
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