bottom latch dragging

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Following could cause the bottom latch on 98/9927 exit device to drag. Bottom rod is too long. Adjust bottom rod per instruction sheet 911375. Top latch controls the bottom latch.  ...
One of the following items may cause the EL1490 device to retract then release: Incorrect power supply - Verify you have the PS873-2/4TD or PS914-2RS/4RL power supply. Problems with wire gauge...
Required top and bottom rod adjustment. Top rod possibly is adjusted too short and not lifting the rod far enough to engage the latch retention which would cause bottom rod to drag floor ...
One of the following items may cause the EL1690 device to retract then release: Incorrect power supply - Verify you have the PS873-2/4TD or PS914-2RS/4RL power supply. Problems with wire gauge...
Following parts are required to add the bottom rod and latch to the 98/9927-LBR/LBR-F device.  Bottom Rod: 050515 for 9827 and 050514 for 9927 (specify finish)  Bottom Latc...
All Keypad ONLY credentials with firmware versions between 2.9.2 and 2.11.0 should be updated to the latest firmware available at www.schlage,com/support.
A firmware issue with Keypad ONLY credential firmware, versions 2.9.2 through 2.11.0 and manufactured between 9-9-2010 and 1-5-2011 will exhibit poor battery life.
The Keypad ONLY credential Reader (KP) can prevent the reader from entering its low power sleep mode - with firmware versions 2.9.2 through 2.11.0
A Technical Note has been generated to document one method of measuring battery current. See the attachment HERE.