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*18782*

18782

Instructions

1a  Closer is handed at factory and must match hand of 

door. hand of closer shown on mounting channel. 

Voltage shown on SENTRONIC cover plate must 

match voltage supplied to door frame.

1b  If door & frame are not prepared for closer & track 

then prepare in accordance with details on opposite 

side.

1c 

Remove cover plate from track. Assemble flexible 

conduit connector to tapped hole provided in top of 

track. Connect power supply wires to track terminal 

strip. See wiring diagram below. Insert track roller 

into track. Make sure roller stud is inserted into hole 

in track slide. Insert track into frame and secure with 

proper screws as shown on opposite side. Replace 

cover plate.

1d  Insert closer in cut out in door & secure with proper 

screws.

1e  Place arm on closer shaft and secure with shaft screw.

1f  Loosen set screw in end of arm, open door part way 

(about 30°), pull arm away from top of door and 

connect to track roller. Tighten set screw firmly. Open 

door to hold open position.

Backcheck

Main

Speed

Latch

Speed

Backcheck

Main Speed

Latch Speed

Door

Closer

Shaft Screw

Arm

Set Screw

Cover

Plate

Track

Optional Concealed Flexible

1/2” Conduit Or 12V Or 24V

Concealed Wiring

To Either Terminal

To Either Terminal

Optional Switch

Input Voltage

12V AC/DC

24V AC/DC

or

115V AC/DC

(Usually from

alarm panel

or detector)

Polarity Not Important

Roller

End Cap

Regulation

 

L

Important

Do not allow door to slam into frame. A “normal” closing time 

from 90° open position is 5 to 7 seconds, evenly divided between 

main swing speed and latch swing speed. Use socket screw key 

furnished. To slow 

MAIN SPEED

 of door, turn regulating screw 

(nearest arm) clockwise. To slow 

LATCH SPEED

 of door, turn 

regulating screw (nearest hinge) clockwise.

Backcheck

To increase 

BACKCHECK

, turn regulating screw (nearest latch) 

clockwise. Use lightest 

BACKCHECK

 that will retard door opening 

sufficiently. 

DO NOT ABRUPT BACKCHECK NOR EXPECT DOOR CLOSER 

TO ACT AS A STOP

CAUTION

Improperly installed or regulated closers can cause 

property damage or personal injury. Please follow these 

instructions carefully.

Backcheck

Main

Speed

Latch

Speed

Backcheck

Main Speed

Latch Speed

Door

Closer

Shaft Screw

Arm

Set Screw

Cover

Plate

Track

Optional Concealed Flexible

1/2” Conduit Or 12V Or 24V

Concealed Wiring

To Either Terminal

To Either Terminal

Optional Switch

Input Voltage

12V AC/DC

24V AC/DC

or

115V AC/DC

(Usually from

alarm panel

or detector)

Polarity Not Important

Roller

End Cap

Electrical Checkout

1.  With power on, open door fully. Door should remain in open 

position. If door does not stay open check electrical input.

2.  Turn power off. Door should close immediately. Turn power on 

and leave door in the open position.

3.  System should be checked at frequent intervals. It is 

suggested that steps 1 & 2 be repeated every 90 days.

 

L

Note: If door does not close when power is off, consult 

LCN Representative or factory.

Backcheck

Main

Speed

Latch

Speed

Backcheck

Main Speed

Latch Speed

Door

Closer

Shaft Screw

Arm

Set Screw

Cover

Plate

Track

Optional Concealed Flexible

1/2” Conduit Or 12V Or 24V

Concealed Wiring

To Either Terminal

To Either Terminal

Optional Switch

Input Voltage

12V AC/DC

24V AC/DC

or

115V AC/DC

(Usually from

alarm panel

or detector)

Polarity Not Important

Roller

End Cap

 

L

NOTE: Not for installation on Ul rated 20 minute wood core doors per can/ulc-s104-10

3130-SEL Sentronic

Installation Instructions

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