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Order Toll-Free: 1 800 252 1910 · www.cjanderson.com · Fax: 1 708 867 5467
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C-1 Tamperproof Kit
This attachment is used with CJA freight door
interlocks CV-1, CV-2, HG-1 and HG-2 to
prevent intentional tampering. For example,
when the elevator door is in the raised position it
is possible to physically close the interlock cam
and contacts allowing the elevator to run with
the doors open. The C-1 tamper proof
attachment prevents intentional, physical closing
of the interlock cam and contacts.
The C-1 tamper proof attachment consists of a
cast iron "plug" which is affixed to the interlock,
a rod with an offset, and rod guides for attaching
the rod to the door. The "plug" is attached on
the interlock opposite and parallel to the
interlock cam. It rests on the straight section of
the rod when the door is open holding the
interlock cam and contacts in the open position.
When the door is actually closed the "plug"
drops into the offset of the rod permitting the
interlock cam to close making the contacts.
The tamper proof attachment may be ordered
with the interlocks or as a field conversion kit for
existing installations.
MODELS AVAILABLE
769-001
C-1 Tamper Proof
Attachment Kit
769-015
Tamper Proof Plug Only
769-016
Rod with Offset
769-017
Rod Guides - Each
3 Required Per Opening
Note: When ordering please specify door
heights and door travel distances, if known. If
this information is not known we will furnish a
standard 72" rod for field modifications.
Ordering Information
237
**WARNING**WARNING**
Many times the door interlock circuit is
jumped out so that the elevator can run
with the doors opened. An example of this
is shown in the above photograph. This can
cause death and injury. Do not try or
attempt this on any elevator.
Install a C-1 Tamperproof Kit to prevent
this from occurring.
**WARNING**WARNING**
Shown With Doors Opened
When installed correctly, the tamper proof plug
is installed on the cam shaft and secured with a
set screw. When the doors are opened the plug
and rod prevent the cam from turning and
closing the contact.
The plug prevents the shaft or cam from turning
because the rod is in the way and in turn
prevents the contacts from closing with the
doors opened.
Shown With Doors Closed
When installed correctly, the offset in the rod
allows the cam to move when the door is fully
shut.
When the locking bar enters the interlock it
allows the cam to move and close the contact,
completing the safety circuit. Make sure you
install a C-1 Tamperproof Device on every
freight elevator you service.
Plug Device
and rod
prevent cam
from being
able to turn
and close
contact.
Plug Device
allows cam
to turn.
Rod Offset
Never jump
out a door
interlock.
This can
cause death
and injury.
ITEM: 769-001
C-1 Complete Kit Shown
Top Rod Guide
769-017
Tamperproof Plug
769-015
72" Rod with Offset
769-016
Interlock Rod Guide
769-017
Bottom Rod Guide
769-017
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