7261510

If the lever handle is not at the correct position

KEYLEX 4000
Autolock LeverIf the lever handle is positioned as shown below, move it to the correct position.

Cylinder typeThe lever handle incorporates a safeguard to prevent lock picking. If pressure is applied to move the lever without

Instruction Manual (for Owner)pressing the code entry buttons, a safeguard that protects the internal mechanism will allow the lever handle toswing free and stop at the bottom (top) position. This is not a defect.

Thank you for your purchase. Please provide this Instruction Manual to the owner or tenant.
Be sure to read this manual. After reading, keep in a safe place for ready reference.

Correct position
Move down tothe correct position.

For added security, we recommend periodically changing the set code.
To make it diﬃcult for others to obtain the entered code byobservation, we recommend pressing random buttons (other thanthose used to enter the set code) during the locking process.

Move up to
the correct position.

< Record of set codes >year month day
year month day
The illustration shows theproduct installed for aright-hand swing door. (Theposition is the mirror opposite
for a left-hand swing door.)

year month day
K423C
K423CM
K423CD

year month day
year month day
Current set code

！ CAUTION■ Caution during
installation

Observe the following precautions to ensure safe useof the product● Always use a manual screwdriver to tighten mounting screws.

Important note regarding code setting● The code set for the KEYLEX 4000 can be from one to 15 digits (32,768 combinations).

Do not use an electric screwdriver.
● The order in which the set numbers is entered cannot be set and does not aﬀect the validity of the code

■ Loosening mounting
screws■ Excessive protrusion ofstrike plate■ Use for other purposes● Tighten mounting screws periodically. Loose screws compromise

entered.

protection against burglaries and may cause the product to come loose

Example: When the set code is 1 ‒ 2 ‒ 3

and fall oﬀ.

The lock can be unlocked by pressing 1 ‒ 2 ‒ 3, 2 ‒ 3 ‒ 1, 3 ‒ 1 ‒ 2, or 1 ‒ 3 ‒ 2.

● If the edges of the strike plate extend too far from the mounting surface, they can● Each button can be used only once in entering the code. (Codes requiring more than one press of the samecause injury or catch on and tear clothing. Ask the contractor performing thebutton is invalid and cannot be set.)

installation to replace the present strike plate with an appropriate one.

Example: 1 ‒ 1 ‒ 2 ‒ 3 or 1 ‒ 2 ‒ 2 ‒ 3 cannot be set.

● Do not hang on the lever by hand, use the lever as a foothold, or hang objects on
the lever. Doing so may lead to hazardous conditions.

◆ Caution for use● Do not attempt to disassemble or modify the product.

(to prevent● Do not close the door with the deadlatch extended.

malfunctions)● Do not operate the lever while pressing buttons.

◆ How to extend theuseful life of theproduct● Do not apply lubricant to the lock case.
● To clean the product surface, wipe with a soft dry cloth. Wipe the buttons andNagasawa Manufacturing Co., Ltd.

surrounding area regularly. If they are visibly dirty, clean with a neutral detergent.

If you see any abnormalities in the door or ﬁttings to which the product is installed, consult a certiﬁed locksmith.

www.nagasawa-mfg.co.jp
4Tel:+81 3 5383 1811
E-mail: contact@nagasawa-mfg.co.jp
Web : www.nagasawa-mfg.co.jp
17261510

Basic operations
Check before use.
① Set code
② The red dots of the deadlatch for thelockset are not visible.
(If visible, move the lever handle so thatthe deadlatch returns to the correctposition).
③ The lever handle turns sideways.
(If not, refer to “If the lever handle is notin the correct position” on page 4.）Main unit

Mode switching unit

② Insert the key into thecylinder, turn 90
degrees to the RESET
position, return to its
original position, thenpull out.

Cylinder for code change

RESETbutton

You can change the set code without removing the product from the door.

【How to change the set code】Perform this procedure with the door open.
① Press the RESET
button.

④ Thumbturn③ Press the RESET button.
④ Press the ENTER button.
⑤ Conﬁrm that the deadlatch
retracts when you move thelever.

① Buttons for code entry* For the type with key (serial number
ending with M or D), you can use a key tounlock the door without pressing the code
entry buttons.
I: Insert the key into the cylinder and turn.
(Only the deadlatch retracts.)②
II: Keep the key turned, then pull theThe red dots oflever to open the door outward.
* The illustration shows the product installed for aright-hand swing door. (The position is the mirror
opposite for a left-hand swing door.)

How to change the set code

ENTERbutton

DEAD LOCK button(Serial number ending with D only)⑥ Press the RESET
button.

③ Lever handles
Cylinder for unlock(Serial number endingwith M or D only)

the deadlatch
are not visible.

⑧ Insert the key into thecylinder, turn 90 degrees tothe SET position, return toits original position, thenpull out.

⑦ Enter a new code.

Lever handle unit
⑨ Push down on the leverhandle to unlock the door
from the interior side, asdescribed at the bottom of
page 2, to conﬁrm that thisunlocks the door.

④ How the door is locked/unlocked from the exterior side depends on the position of the thumbturn.
From the interior side, move the lever handle to unlock the door regardless of thumbturn position.
Auto LockConﬁrm that the thumbturn for the mode switching unit on the interior side is at the Auto Lock position(default position when shipped from factory).
The door locks automatically when closed. To unlock the door from the exterior side, press the code
entry buttons or use the key.

FreeConﬁrm that the thumbturn for the mode switching unit on the interior side is at the Free position.
The door does not lock automatically when closed. Move the lever handle to unlock the door fromeither side.

Dead Lock* The illustration shows the productinstalled for a right-hand swing door.
(The position is the mirror opposite for aleft-hand swing door.)

How to switch to FREE

Conﬁrm that the thumbturn for the mode switching unit on the interior side is at the Dead Lockposition.
Note that this applies to the lock incorporating the DEAD LOCK button.
The door locks automatically when closed. A key is required to unlock the door from the exterior side.
This feature is useful if you want to disable unlocking via the buttons to limit the number of people
capable of unlocking the door.

① Press the RESET button.
② Enter the set code.
③ Press the ENTER button.

！ The key is required to unlock the door from the exterior side. Always carry the key with you after setting the product to Dead Lock.
Interior side
① Push down on the lever handle,
then the latch retracts.

Exterior side [Auto Lock]

Exterior side [Free]

Perform steps ① to ④ to unlock.
① RESET button(Clears a code set in error.）① Push down on the lever handle,
then the latch retracts.

③ ENTER button(This button will remain
depressed when a valid
code is entered.)①④ Push down onthe lever.
(The ENTERbutton pops
back up.)
Do not move the lever handle！ while pressing the ENTER button.

2④ Press down on thelever handle so that thedeadlatch retracts, andthen keep it.

* The illustration shows the
productinstalled for aright-hand swing door.
(The position is the mirror
opposite for a left-handswing door.)

Exterior side [Dead Lock]① Unlocking the door
using the key

To switch from Free to Auto Lock, turn the thumbturn on the interior side to the Auto Lock position whilepressing down on the lever on the exterior side.

①Turn the keyand pull thelever toopen thedoor.

② Enter the set code.

How to switch to Dead LockTo switch from Dead Lock toAuto Lock, turn the thumbturnto the Auto Lock position.
(Do not press the DEAD LOCKbutton.)①①* The illustration shows the product installed for a right-hand swing door.
(The position is the mirror opposite for a left-hand swing door.)⑤ Turn the thumbturnon the interior side
to the Free position.

① While pressing the DEAD LOCK button② Turn the thumbturn to the Dead Lock position.

318.01.05