Dorex T300 COMBO Installation Instructions

T300 COMBO
Electronic Entry Handleset
READ THIS FIRST
1. Please read these installation instructions carefully before installing or using this door lock. Pay
special attention to items marked
2. Do not install on hollow doors without proper reinforcement. Door must provide an
proper solid wood lock stile or reinforcement at required location. Without adequate support,
the installation may warp or bow the door surface and prevent the lock from functioning
properly.
3. These instructions are meant for field installation or preparation on a wood door and frame. Not
recommended as preparation documents for door manufacturing. Please request documentation
for door manufacturing or hollow metal door and metal frame preparation or visit
www.dorex.com.
4. Do not use power tools to install door hardware. Excessive tightening of screws or bolts may
affect the installation and/or lock function.
5. This document describes a recommended installation based on common product and industry
standards. It is the responsibility of the installer to determine the validity or suitability of these
recommendations for a particular purpose or installation.
6. These instructions should be passed on to the owner/operator on completion of installation.
This document provided as-is, manufacturer reserves the right to
make technical changes without prior notice.
LOCK MAINTENANCE
1. Check the door every three months to ensure the door has not become misaligned. Verify the
lock is properly secured and functions properly and smoothly.
2. Lubricate keyed locks using silicone spray or graphite powder lubricants sparingly. Spray a small
amount of lubricant into the keyway. Then, run the key in and out of the lock repeatedly, wiping
any debris from the key each time. Lubricate locks annually, or when needed.
Do not use graphite powders if already using liquid lubricants.
Do not use petroleum based lubricants.
REQUIRED TOOLS
For lock installation:
a. Philips-head screwdriver.
b. Rubber mallet (optional).
Do not use power tools to install door
hardware, excessive tightening of
screws or bolts may affect installation
or functioning.
1a ADJUST BACKSET (If required)
BACKSET is preset at the factory to 2-3/8" (60mm). If a 2-3/4" (70 mm) backset
is required please adjust as shown below.
ADJUST DEADBOLT
2-3/8"
(60 mm)
ADJUST SPRING LATCH
2 3 / " 2 3 / "
4 8
2-3/8"
(60 mm)
For wood door and frame preparation:
a. Power drill.
b. 2-1/8"(54 mm) dia. hole saw
c. 1" (25.4 mm) dia. spade drill bit.
d. 1" (25.4 mm) wood chisel.
e. 5/16" (8 mm) drill bit (optional).
f. 1/8" (3 mm) drill bit (optional).
180°
2-3/4"
(70 mm)
SLIDING PLATE
SPINDLE CAM
2 2
3 / " / 3 "
4 8
PULL
2-3/4"
(70 mm)
LEVER
SCREW CHART
Handleset
AA. Flat Head #8-32 Combo Screw, 3/4" (19 mm)
BB. Flat Head #8-32 Machine Screw, 1-3/4" (44.5 mm)
CC. Pan Head #8-32 Machine Screw, 1-3/8" (35 mm)
DD. 2.5 mm Hex Key (Tool)
Electronic Deadbolt
A. Flat Head #12-24 Machine Screw, 2-1/4" (57 mm)
B. Flat Head #12 Wood Screw, 3" (76 mm)
C. Flat Head #8-32 Combo Screw, 1-1/4" (32 mm)
D. Pan Head #8-32 Machine Screw, 3/4"(19 mm)
1b CONVERT FACEPLATE (If required)
If mortised faceplate for either the deadbolt or spring latch is converted to drive-in, any
applied fire-rating will be nullified.
For drive-in type latches, we recommend an edge-bore of 31/32" (25 mm) diameter for
a tighter fit.
To change the deadbolt faceplate:
1. Use a flat screwdriver to separate the
faceplate from the latch backplate.
2. Snap the selected faceplate onto the
backplate.
BACKPLATE
FACEPLATE
To change the deadbolt faceplate:
1. Use a flat screwdriver to separate the
faceplate from the latch backplate.
2. Snap the selected faceplate onto the
backplate.
Installation Instructions
T300
2-in-1 Electronic
Deadbolt Lock
HANDLESET
Where Used Quantity
Spring latch / deadbolt latch
Leverset / handleset
Handleset
Lever
Where Used Quantity
Deadbolt hash
Security strike
Strikes
Battery pack
To change to drive-in:
1. Use a flat screwdriver to separate the
faceplate and backplate from the latch.
2. Align ring as shown, then snap into place.
DRIVE-IN
RING
To change to drive-in:
1. Use a flat screwdriver to separate the faceplate
and backplate from the latch.
2. Slide back the backplate to remove it.
3. Align ring as shown, then snap into place.
FACEPLATE
BACKPLATE
3
DRIVE-IN
COLLAR
T300T-COMBO-INS-EN 2025-04 1/2
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