INSTALLING Schlage CO Series Offline Locks

Schlage CO Series locks are available in three models, the CO-100, CO-200 and CO-250 locks.


Note on CO-200 and 250 Series Locks: Before removing the six or eight mounting screws (depending on credential reader option), the USB plug must be unplugged from the slot.

For this article, after removing the mounting screws from the CO-200 lock, slide the cover off of the baseplate. Note: Be careful removing the center screw on the rear left side. There is a Mylar pull tab in the slot adjacent to this screw. The pull tab keeps the lithium battery from contacting the electronics, ensuring the battery will be at “new” charge once the lock is installed. This pull tab is located in different locations for the proximity and magnetic stripe readers.

IMPORTANT: When installing a CO-200 or 250 series lock, be sure to pull out the Mylar pull tab to power the real time clock when the four AA battery pack is low or disconnected.

Once the cover has been removed from the baseplate, remove the two screws securing the spring cage. To change the handing, rotate the spring cage 180 degrees. The stamped area containing the word “LATCH” and an arrow will point in the opposite direction.

Reinstall the spring cage using the two screws, and the cover using the mounting screws. Note: The keypad-equipped lock used for this article required that a few of the buttons had to be individually aligned within cover slots before the cover would fit flush onto the baseplate. Use the eraser end of a pencil to reposition the buttons. Once the lock has the proper handing, it is ready to be installed.

For this article, we will install the Schlage CO-200 Keypad Cylindrical Lockset with privacy button onto a provided mount. The mount has been prepped for the installation of this CO lock. In addition to the five crossbore and edge bore lock mounting openings, two holes had to be drilled for the Door Position Switch (DPS).

The DPS tells the lock when the door is closed and when the door is open. The Door Position Switch is required only for privacy function equipped CO-Series locks. The classroom/storeroom and office functions do not require a Door Position Switch.

The privacy function allows a user to secure the door in such a state that normal access credentials cannot gain ingress. When the privacy function is activated, access can only be gained using a mechanical override key or a “Pass Through Credential.” This state is automatically cancelled when the interior push button is pressed a second time or the door is opened.

CO Series cylindrical locks use a modular variation for the retractor. The retractor mechanism is no longer a built-in component of the outside lock assembly; it is a separate component that is first installed onto the end of the latchbolt mechanism after it has been installed into the door edge. Once in place, a cover plate is screwed into place to keep the retractor in position.

Install the keyed outside lever prior to installing the outside lock assembly onto the exterior side of the door. The lock is aligned by using a straight slot screwdriver to rotate the cam into position. Once the cam is in position, the lock cylinder equipped exterior lever is installed. Make sure the lock cylinder retracts the latchbolt when rotated counterclockwise for a LHR installation.

Because the lock is handed, the outside lock assembly spindle hub must be aligned before installing onto the door. The two triangles must first be aligned. The spindle is then slid into the hub.

Once aligned, the outside lock assembly can be mounted after the two standoffs are screwed into the two top mounting holes. A 5/16” open-end wrench is used to tighten the standoffs.

Note: Schlage includes a plastic grommet that is installed onto the crossbore hole on the interior face of the door to protect the ribbon cable from being cut and exposing the wires.

To secure the outside lock assembly onto the door, an inside alignment plate is installed using through bolt screws into the outside lock assembly. Two mounting screws attach the alignment plate to the inside face of the door.

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