FAX version 911373_00(1) Page 8 of 9
Drill 5/8dia. wire access hole
thru device side of door.
Install after device has
been mounted on door
Do not cut device with potted
circuit board installed
Potted Circuit Board
If the solenoid fails to retract the latch bolt when power is applied, recheck wiring for
proper connections.
If solenoid retracts latch bolt momentarily but will not remain in energized position:
1.
Check wiring for proper connections, guage, and distances.
2.
Check for latch bolt binding caused by improper strike installation, warped door, etc.
When power is applied to the
potted circuit
board
, the solenoid receives a momentary
signal to retract and a separate signal to hold
as long as power is applied. When attempting
to retract solenoid again, power must be
removed from the circuit and reapplied.
NOTE
Solenoid
Potted
circuit
board
EL WIRING
EL9975
Black
Black
}
Solenoid
EL ADJUSTMENT PROCEDURE
A.
Check for proper function:
1.
Make sure device is not dogged.
2.
Depress pushbar and make sure latch bolts
retracts and extends fully (see Figure 3).
3.
Electrically energize solenoid and hold.
4.
Check latch bolt(s) for full retraction (must
clear strike (see Figure 3).
5.
Release solenoid and check latch bolt
extension (see Figure 3).
6.
Continue to Section B if device does not
function electrically.
B.
Determine if dogging rod adjustment is too long or short:
1.
The dogging rod adjustment is too
long
if latch bolt
does not retract and clear strike (see Section C for
adjustment).
2.
The dogging rod adjustment is too
short
if latch bolt
does not fully extend
or
latch bolt fully retracts but
solenoid releases while energized (see Section D for
adjustment).
C.
Adjust solenoid if dogging rod is too
long
(see Figure 4):
1.
Remove end cap
and dogging cover
.
2.
Loosen cap screw
.
3.
Hold plunger
depressed in solenoid housing
.
Note:
Push hard against plunger
to overcome
an internal spring in solenoid housing
.
4.
Turned threaded bushing
in to shorten dogging
rod
so latch bolt fully retracts.
5.
Tighten cap screw
.
Note:
Cap screw
must be tightened against
flat on threaded bushing
. Apply a few
drops of Loc-Tite 222 to threads of cap
screw
.
6.
Replace dogging cover
and end cap
.
7.
Return to Section A to check for proper function.
D.
Solenoid adjustment if dogging rod adjustment
is too
short
(see Figure 4):
1.
Remove end cap
and dogging cover
.
2.
Loosen cap screw
.
3.
Hold plunger
depressed in solenoid housing
.
4.
Turn threaded bushing
out to lengthen
dogging rod
so plunger
just bottoms in
solenoid housing
and latch bolt is fully retracted.
Note:
Push hard against plunger
to overcome
an internal spring in solenoid housing
.
5.
Tighten cap screw
.
Note:
Cap screw
must be tightened against flat
on threaded bushing
. Apply a few drops of
Loc-Tite 222 to threads of cap screw
.
6.
Replace dogging cover
and end cap
.
7.
Return to Section A to check for proper function.
Troubleshooting solenoid operation
Voltage:
24 VDC
Current:
16 A inrush (0.3 sec.)
0.25 A holding
ELECTRICAL SPECIFICATIONS
12 AWG, 200 maximum or
14 AWG, 100 maximum
Electric
power
transfer
OPTIONAL EQUIPMENT
Solenoid must be wired to a PS873 logic board:
If 871-2 logic board, refer
to Von Duprin instructions
941352.
If other 873 logic board,
refer to Von Duprin
instructions 941353.
Figure 4
1
2
3
5
7
4
6
Figure 3
Latch bolt extended
Latch bolt retracted
3/4
Flush within 1/16
5/16
CL
5/8 dia.
