8375 Series Troubleshooting Guide
Problem
Solution
Insert supplied Allen wrench into mounting bolt holes in the bottom of the
lock housing and turn (See Fig. 1).
- Check power supply. DC power should be slightly over the voltage
specifications outlined on the packaging. EG: for 12VDC operation supply
should be set at 12VDC-13VDC.
- Check connections at power supply, connected releasing devices
and lock terminals.
- Check that voltage selection jumpers are correctly set
- Check that connections from lock circuit board to magnet core have not
been broken or loosened during installation.
Check to see that armature plate is correctly aligned with the electromagnetic
lock. If there is improper alignment, make a 1/4” turn of the armature plate
mounting bolt and check for alignment.
CAUTION:
The armature plate must
remain affixed securely to the door or serious bodily injury or property damage
may occur. Bolt should be tight enough to hold the armature plate to the door
while still allowing for alignment with the electromagnetic lock.
This generally indicates that the lock is either operating on AC voltage or
there is some AC voltage present in the DC supply. A properly filtered and
regulated DC power supply is required to achieve optimal operation from
the lock.
- Ensure that switching devices are interrupting the DC power and not the
AC power supply voltage
- Ensure rubber washer on armature plate mounting bolt has not been
removed or damaged
- Check that switching device interrupts the positive wire and
not the negative wire (see Fig.3)
- Remove any Diodes or other suppression devices that may be installed
While some heat rise is normal for the 8375, excessive heat generally
indicates that the voltage selection jumpers are incorrectly set.
Cannot remove the lock mounting plate from top of
magnet for installation.
Lock is installed but has no holding force at all.
Lock has enough holding force to lightly hold a
screwdriver or set of pliers but door will not lock.
Lock is operating and locking but the armature plate is
“humming” against the surface of the lock.
Lock in not releasing immediately upon removal of power.
Lock surface is very warm to the touch.
8375 Installation Instructions
(Continued)
Specifications
Mechanical:
8375 Lock Dimensions
(Including 1/8" (3.2mm) mounting bracket):
13/16"D x 1-1/2"W x 6-17/32"L
(21mm x 38mm x 166mm)
Electrical:
Voltage:
12VDC or 24 VDC
(Selected by choosing appropriate voltage selection jumpers)
Current:
0.36A @ 12VDC
0.18A @ 24VDC
Environmental:
Not for use in outdoor environments.
Circuit board operating temperature:
14 to 140° F (-10 to 60° C )
NOTE: Specifications are subject to change without notice.
Voltage
Current
12VDC
0.36A
24VDC
0.18A
8375 Current Requirements
3
