RCI Surface MicroMag 8375 User manual

©2011 RUTHERFORD CONTROLS INT’L CORP. • WWW.RUTHERFORDCONTROLS.COM
USA: 2517 SQUADRON COURT, SUITE 104, VIRGINIA BEACH, VA 23453 • CANADA: 210 SHEARSON CRESCENT, CAMBRIDGE, ON N1T 1J6
PHONE: [phone].621.7651 • FAX: [phone].621.7939 • E-MAIL: [e-mail]
INSTALLATION 8375
Surface MicroMag®
Electromagnetic Lock
®
IS8375 PCN110045
R07/11SH
Pre-Installation Instructions
1. This product must be installed according to all applicable
building and life safety codes.
2. Due to the variety of mounting configurations available with
this product, a survey and assessment of the physical area
in which the product will be installed must be performed.
3. The door frame must be inspected and deemed structurally
sound prior to installation of the electromagnetic lock. The
structural integrity of the mounting surfaces must be strong
enough to meet or exceed the holding force of the product.
4. The product must be protected from potential damage due
to intruders or tampering.
5. The product should be installed in a location that will not
hinder or create a potential safety hazard to authorized
personnel accessing the protected area.
6. Because electromagnetic locks are used in a variety of
applications and different door frame configurations, an
experienced installer with knowledge of this product must
make a determination of the optimal mounting method for
this specific application.
7. The components, hardware, installation instructions and
mounting template included with this product are intended
for use on outswinging doors.
8. Do not install this product on the exterior of buildings.
9. Do not use as a doorstop. This will void warranty.
10. Separate accessories not included with this product must be
used in the following applications:
• Inswinging doors
• Narrow head jamb situations or center-hung doors
• Wherever there is insufficient space on the door frame
header to mount the lock
• Glass or Herculite doors that do not have a door frame
• Hollow metal or wood frames where the door stop is
not thick enough to allow the product to be installed
• Wherever an obstruction in the door prevents
installation of the armature plate at a proper height
• Doors that do not permit the armature plate to be
mounted low enough to meet the magnet surface
Refer to the Product Accessories Guide section of the
Installation Instructions for further information.
11. Installation of this product should be done by an
experienced installer with knowledge of this product.
NOTE: It is highly recommended that thread locking compound
be applied to all screws during installation to reduce chance of
screws loosening over extended time.
PLEASE DELIVER ALL INSTALLATION INSTRUCTIONS TO
THE END-USER UPON COMPLETION OF THE INSTALLATION.
Fig. 1.
8375 Mounting
Plate Removal
Fig. 2 – 8375 Voltage Selection Jumper Setting
12VDC Operation 24VDC Operation
(Factory Setting)
Electromagnetic lock installations must conform to local fire codes,
National building codes and Life Safety Codes.
Mounting
Bracket
Releases captive
mounting screws

8375 Installation Instructions (Continued)
NOTE: All RCI electromagnetic locks must be powered with filtered
and regulated DC power supplies such as the RCI 10 Series UL
Listed power supply. RCI offers a full line of power supplies and
switching devices that are suitable for use with the 8375 Series
locks.
To Ensure Instant Release All switching devices must be wired in
between the DC power source and the positive terminal of the lock
in Fig 3.
Switching the negative power supply line will not allow the lock to
release immediately. RCI electromagnetic locks contain MOV's for
surge suppression and do not require any additional suppression
to be added during installation. The installation of diodes across
the lock input terminals will cause a delay in release.
Fig. 3 – Power Connections
SWITCH
+
-
INCORRECT
CORRECT
+
-
SWITCH
FILTERED DC SUPPLY
FILTERED DC SUPPLY
Mount the electromagnetic lock to the door frame as outlined on the
installation template included with the product.
NOTE: During installation of the armature plate to the door it is
essential that the armature plate remains movable. The armature plate
must be allowed to pivot on the center-mounting bolt to allow proper
alignment with the magnet surface. If the plate is not aligned with the
magnet surface, the lock may lose holding force or not lock at all.
The head of the armature mounting bolt ships with a rubber washer
affixed to it. This washer should project slightly beyond the surface
of the armature plate. This is to allow the washer to expand when
power is removed and break the air vacuum between the plate and
the magnet surface. If this washer is removed or trimmed the lock
will appear to have some holding force even when power is removed.
For added safety, thread locking compound has been provided for the
armature plate bolt and the four captive electromagnetic lock mounting
screws.
WARNING: Improper installation, maintenance, inspection or usage of
the product or any related accessories or parts may cause the
electromagnetic lock, armature plate and associated hardware to
disengage and fall, causing serious bodily injury and property
damage. Rutherford Controls Int'l Corp. will not be liable to the
installer, purchaser, end user or anyone else for damage or injury to
person or property due to improper installation, care, storage,
handling, maintenance, inspection, abuse, misuse or act of God or
nature involving this product or any related accessories or parts.
Route the power supply connecting wire through the door frame and
into the wire access hole in the top of the magnet housing. Connecting
wire should be of sufficient gauge for the lock being installed and the
distance being run. See table for current draw specifications and wire
gauge chart.
Installation Instructions
Inspection and Maintenance
This product and all related accessories or parts must be
inspected and maintained on a quarterly basis. Contacting
surfaces of the electromagnetic lock and armature plate must be
kept free of contaminating materials. Surfaces must be cleaned
periodically with a non-abrasive cleaner.
All mounting fasteners must be inspected on a quarterly basis.
When properly installed, the ends of the armature plate allow a
slight movement but the plate will feel secure when grasped at the
bolt. There should be no movement to the mounting bracket or
housing of the electromagnetic lock.
For added safety, thread locking compound has been provided for
the armature plate bolt and the four captive electromagnetic lock
mounting screws.
WARNING: Improper installation, maintenance, inspection or
usage of the product or any related accessories or parts may cause
the electromagnetic lock, armature plate and associated hardware
to disengage and fall, causing serious bodily injury and property
damage.
PLEASE DELIVER ALL INSTALLATION INSTRUCTIONS TO
THE END-USER UPON COMPLETION OF THE INSTALLATION.
For product support, parts and ordering information contact:
Rutherford Controls Int’l Corp.
USA: 2517 Squadron Court, Suite 104,
Virginia Beach, VA 23453
Canada: 210 Shearson Crescent
Cambridge, ON N1T 1J6
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
Website: www.rutherfordcontrols.com
2

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

Product Accessories
Top Jamb bracket and angle bracket kit for use when mounting
lock on a door that swings inwards. Magnet mounts to the
underside of an angle bracket mounted on the frame. Armature
plate mounts to “Z” bracket assembly mounted to door face.
Available for 8310 and 8320 models
Allows an armature plate to be mounted to a glass or Herculite
door that does not have a frame. The Glass Door Bracket is a “U”-
shaped piece of 1/16” thick material that slips over the top of the
glass panel and tightens to the glass with setscrews. The Armature
plate mounts directly to the surface of the bracket by means of a
threaded hole in the bracket assembly plate.
Available for both 1/2” and 3/4” thick glass doors.
Used for traffic control applications where two doors are to be used
with a single 8375 lock. The Split Armature plates are half the
length of a standard armature. Each of these is mounted on one of
a pair of doors with an 8375 lock centered on the frame between
the doors.
NOTE: Use of split armature plates will reduce holding force.
For use with doors that do not permit the armature plate to be
mounted low enough to meet the magnet surface. Eg: Some
aluminum framed commercial glass doors. The armature holder
can be mounted to whatever frame is available and the armature
plate in turn mounted to the holder.
Available in both flat (shown) as well as Pocket styles.
For use when an obstruction in the door prevents the installation of
the armature plate at a proper height. If the armature plate needs to
be lowered then a spacer bar can be used to lower the lock from the
frame.
Available in several different heights.
Contact RCI for full details.
Top Jamb Bracket
Glass Door Bracket
Split Armature Plates
Armature Holder
Space Bar
Part Usage Example
8375 Installation Instructions (Continued)
4©2011 RUTHERFORD CONTROLS INT’L CORP. • WWW.RUTHERFORDCONTROLS.COM
USA: 2517 SQUADRON COURT, SUITE 104, VIRGINIA BEACH, VA 23453• CANADA: 210 SHEARSON CRESCENT, CAMBRIDGE, ON N1T 1J6
PHONE: [phone].621.7651 • FAX: [phone].621.7939 • E-MAIL: [e-mail]

©2011 RUTHERFORD CONTROLS INT’L CORP. WWW.RUTHERFORDCONTROLS.COM
USA: 2517 SQUADRON COURT, SUITE 104, VIRGINIA BEACH, VA 23453 • CANADA: 210 SHEARSON CRESCENT, CAMBRIDGE, ON N1T 1J6
PHONE • 1.800.265.6630 • 519.621.7651 • FAX: [phone] • 519.621.7939 • E-MAIL: [e-mail]
8375 Installation Instructions (Continued)
Total One Way
Length of 1/4A 1/2A 3/4A 1A 1-1/4A 1-1/2A 2A 3A
Wire Run (ft.)
100 24 20 18 18 16 16 14 12
150 22 18 16 16 14 14 12 10
200 20 18 16 14 14 12 12 10
250 18 16 14 14 12 12 12 10
300 18 16 14 12 12 12 10 --
400 18 14 12 12 10 10 -- --
500 16 14 12 10 10 -- -- --
750 14 12 10 10 -- -- -- --
1000 14 10 10 -- -- -- -- --
1500 12 10 -- -- -- -- -- --
Total One Way
Length of 1/4A 1/2A 3/4A 1A 1-1/4A 1-1/2A 2A 3A
Wire Run (ft.)
100 20 18 16 14 14 12 12 10
150 18 16 14 12 12 12 10 --
200 16 14 12 12 10 10 -- --
250 16 14 12 10 10 10 -- --
300 16 12 12 10 10 -- -- --
400 14 12 10 -- -- -- -- --
500 14 10 10 -- -- -- -- --
750 12 10 -- -- -- -- -- --
1000 10 -- -- -- -- -- -- --
1500 10 -- -- -- -- -- -- --
Load Current @24V
Load Current @12V
Wire Gauge Chart courtesy of Electronic Locking Devices by John L. Schum
WIRE GAUGE SELECTIONS