DORTRONICS SYSTEMS 1107 D Series, Mounting Instructions

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REV#0001A

THRU BOLT MOUNTING IN SOLID CORE WOOD DOOR 
 

Drill  11/32” h ole throu gh th e  door for t he s houlder  bolt a nd the n e nlarge the  opening  on the  outsi de of the d oor to  1/2” to  

accommodate the sex nut (F igure 4). Insert  shoulder screw/armature assembly through face of door,  being sure th at spring 

washers remain over shoulder, and hold firmly against door by pushing directly on head of screw. Insert sex nut from opposite 

face and assemble. When armature is floating freely, tighten 5/16-18-shoulder screw fully and securely with 5-32 Allen wrench 

. 

STEP 4) LOCK & ARMATURE ALIGNMENT 

Make all electrical connections per figure 6 below.  Attach the electro-magnet to the mounting plate using the (2) 1/4“cap 

screws and split washers, 

do not over tighten the cap screws they will need to be removed for final adjustment.

With the el ectro-magnet energized and the  armature fully engaged, position the Lock so that t he door is snu g against stops 

mark the p osition of the  lock  mounting plate; then

Turn the system off

. Remove the (2)  1/4“cap screws, remove the  electro-

magnet and fully tighten the (4) screws that hold the lock mounting plate to the header. 

Using the ( 2) 3/16” dia. holes in the m ounting plate as  a physical template prepare the f rame for the  (2) locking screws. Drill 

.159 dia. Holes (No. 21 drill) and tap frame for No. 10-32 machine screws, or drill two 11/64” dia. in the frame for No. 10 sheet 

metal screws. Secure mounting plate with #10 screws and lock  washers. 

The use of the # 10 locking screws is important. 

They provide resistance to shear and rotation, and assure that maximum holding force is developed.  

Re-install the electro-magnet using the 1/4” cap screws and check installation and alignment of armature and electro-magnet 

by opening and clos ing door while turning system on and off.  Armature mounting surface must be in full c ontact with top and 

bottom rails of electro-magnet  

ELECTRICAL HOOKUP 

 
The 1107 electro-magnetic lock should be connected to a Class 2 power supply

. Leads are connected in series for 24  

volt operation (as shipped from the factory) or connected in parallel for 12 volt operation.  

For 12 volt operation

, cut the gray 

wire to m ake 2 equal lengths, strip back  the insulation 3/8” on  each lead and connect each gray wire end to the c loser blue 

wire end – see Figure 6 below. 

Note: For 12 VDC (parallel coils) the gray wire must be connected to the adjacent blue 

wire or the magnetic bond will be significantly reduced. 

If the Door Position Switch option is installed, connect the black 22 AWG wire to the common connection of the access control 

input for monitoring door status. Then connect either the red wire (for systems requiring normally closed contacts) or the white 

wire (for s ystems requiring normally open contacts). Refer to t he device  manual for det ails. Typically, Dortronics  door control 

systems look for closed contacts to indicate that the door is secure (closed). 

Figure

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