missing part for deadbolt

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Incorrect timing of the lock can cause the outside lever to retract the latch when raised up.  See instructions here (Step 16 and 17) to time a T351, T381, T561, and T571.  Also applies to the same...
To verify the timing on a T561, function test the outside lever after locking it.  To lock the key should only rotate 180 degrees (Not 360 degrees as Schlage does) A properly timed lock will n...
Followings could cause the Chexit device to go into alarm after the rearm time: Chexit devices shipped after 8-24-2015 with motor driven: Module DPS LED is ON DPS switch contact is open: Close t...
Chexit devices shipped prior to 8-24-2015 with solenoid driven: Chexit device has a RX switch with a connector that needs to be connected to the Chexit module otherwise the alarm will sound af...
The date of manufacture printed on the chassis cover (see below), will determine if you have a revised or old chassis. Chassis manufactured mid-June 2013 will have the new improvements. The first t...
Applies to L9090EL/EU, L9091EL/EU, L9092EL/EU, L9093EL/EU, L9094EL/EU, L9095EL/EUOvervoltage will cause the lock to shut down for approximately 5 minutes to allow the circu...
If PS873 power supply provides more than 26.4VDC replace the power supply with PS914 power supply.
This is usually caused because the wrong tailpiece is being used on non-IC cylinders or the incorrect driver for IC options. Use the below descriptions to identify which they need.NON-IC: There are...
CO Reader Modules are not individually replaceable, nor can they be swapped between locks. The inside and outside assemblies of a CO lock are a matched/mated set and cannot be swapped to change rea...