Concealed
mounting
plate
1/2"
Two #10 x 1 1/2"
screws (supplied)
Set screw.
Tighten with 6/32" Allen wrench
to secure armature onto
mounting plate.
Door
Contact plate
Contact plate
adjusting screw
1/2"
Armature Assembly Mounting
NOTE: Armature assembly must be mounted vertically
(Figure 3) to obtain correct alignment with the
electromagnet.
1.
Using a 5/32" Allen wrench, turn the contact plate adjusting
screw (Figures 5 and 6) counterclockwise to loosen the
contact plate.
2.
Place the transfer marking points in the armature mounting
holes (Figure 3).
3.
To locate the two mounting holes in the door, hold the contact
plate centered against the magnet, open the door and press
against the transfer marking points on the armature base.
Release the door and remove the transfer marking Points.
4.
Mount the armature assembly using one of the following
methods:
a.
Thru-bolt mounting (Figure 5).
Center punch the two
holes (at the points marked in step 3) and drill 5/16"
diameter through the door. Distance between the center
points should equal 1 3/4".
NOTE: Thru-bolt mounting is recommended for standard
1 3/4" hollow metal, hollow core or composite type
wood doors.
Secure the armature assembly, with the contact plate
adjust screw facing down, to the door as shown in
Figure 5 using (2) #1/4-20 x 2" screws (supplied)
NOTE: For 2" doors, use (2) 1/4-20 x 2-1/4" bolts.
b.
Surface concealed mounting (Figure 6).
Measure two
120
V
AC
2
4V
AC/
DC
C
OM
FRON
T
VIEW
T
OP
VIEW
Figure 2. Terminal Block
Figure 5. Thru-Bolt Mounting
Figure 6. Surface Concealed Mounting
points for 1/8" holes drilled 1/2" on center equidistant
from each marked point. Center punch the holes and
drill 1/8" diameter x 1 1/4" deep. Install the concealed
mounting plate using the two #10 x 1 1/2" screws
provided.
NOTE: Surface concealed mounting is not recommended for
hollow metal, hollow core, or composite type wood
doors.
Align the holes for the concealed mounting plate in the
armature base with the pins on the concealed mounting
plat. Secure the armature assembly, with the contact
plate adjust screw facing down, to the door by tightening
the set screw as shown in Figure 6.
5.
Align the contact plate against the electromagnet. The
contact plate
must be
centered and lie flat against the magnet
to ensure sufficient holding force. Tighten the contact plate
adjusting screw until the plate is firm but not set.
Do not
overtighten the contact plate.
6.
Recheck alignment and adjust if necessary.
7.
Adjust the door closer to exert 3 pounds of force when the
door is open and armature and magnet are in contact.
8.
Check operation.
NOTE: The unit will not operate without electrical power.
Figure 3. Mounting the Armature Assembly
P/N 3101128 ISSUE 1
501-1012DE-1-01
EM508 PAGE 2
M
ounting holes
Armature
(base view)
Figure 4. Surface Housing
Acrylic
I
nsulating Sleeve
1 3/
4
"
Door
P
late
1 5/8"
D
OOR
(2) #1/
4
-20 x 2"
screws provided
for a standard
1 3/
4
"
door
2" from floor to center
Contact plate
adjusting screw
M
ounting holes
Armature
(base view)
2 Transfer points
Holes for
concealed
mounting
plate
Armature
(base view)
Top of
door
Lock edge
of door
2 3/8"
(60 mm)
2 5/8" (67 mm)
approx.
5" (127 mm)
approx.
1 11/16"
(43 mm)
2
Holes
for
mounting
housing
to
wall
2
Holes
for
mounting
magnet
assembly
to
housing
G
round
wire
connection
F
ield
wiring
entrance
hole
GN
D
1
Hole
for
securing
field
wiring
protector
