Chamberlain K74-16420 Installation Instructions

APPLICATION REQUIREMENTS:
Replacement of Limit Switch and/or its components for a Model LGO Operator.

INSTALLATION INSTRUCTIONS

NOTE: Refer to the Ownerʼs Manual supplied with the
operator for all mounting and wiring instructions.
REMOVE EXISTING LIMIT SWITCH ASSEMBLY:
Disconnect the wire connections to the limit switches.
Remove the six screws from the nut plates. Remove the limit
switches, internal grip washers and standoffs from the elec-
trical box and discard.
Remove the two 1" screws from the locknuts. Remove the
depress plate and depress plate springs and discard.
INSTALLING NEW LIMIT ASSEMBLY:
To install the new limit assembly, follow the steps outlined
above in the reverse order. Reconnect the wires to the new
limit switches.
WIRE CONNECTIONS
Refer to the illustration below and for complete wiring dia-
gram see reverse side.
(YE)
OPEN NC
NO
LIMIT
(GY)
C
(GY) (YE)
NOTE:
shown in box for easier viewing.
For more information, please visit www.devancocanada.com or call toll free at 855-931-3334
(BR)
NC CLOSE
NO
LIMIT
C
(BR)
Other components not
LGO Limit Switch Assy
LGO LIMIT SWITCH ASSY
Replacement Kit
repLACeMenT KIT
WARNING
DISCONNECT POWER AT THE FUSE BOX BEFORE
PROCEEDING. IF NECESSARY REMOVE THE OPER-
ATOR FROM ITS MOUNTED POSITION.
OPERATOR MUST BE PROPERLY GROUNDED AND
CONNECTED IN ACCORDANCE WITH LOCAL ELEC-
TRICAL CODES. NOTE: THE OPERATOR SHOULD
BE ON A SEPARATE FUSED LINE OF ADEQUATE
CAPACITY.
ALL ELECTRICAL CONNECTIONS MUST BE MADE
BY A QUALIFIED INDIVIDUAL.
K74-16420 K74-16420