Knox FDC Plug User manual

The Knox®FDC Plug has been designed for ease-of-use when installing or
removing the plug from a connection. Fire personnel properly equipped with
a Knox Keywrench can quickly remove the plug. In the event of debris or ice
buildup on the locking bolt head, a small flathead screwdriver or similar tool
will quickly remove any foreign matter.
Plug Identification
Each Knox FDC Plug is etched with a unique serial number
on the plug face. The plug thread size and diameter is
etched on the back of the plug. Verify that the connection
coupling thread is the same size before attempting
plug installation.
Knox®FDC Plug
OPERATING INSTRUCTIONS
KNOX COMPANY • 1601 W. Deer Valley Road, Phoenix, AZ 85027 • [phone] • [phone] • Fax [phone] • Web: www.knoxbox.com • E-mail: [email protected]
OPE-KBSPEC-0024-B
© Copyright 2009. Knox Company
Keywrench
Spanner
Pins
Key
Locking
Bolt Head
2.5" Plug
Threads per Inch
Diameter
Swivel-Guard™
12 3 4
Remove warning tag. Remove
all debris from connection
coupling threads and from
inside the pipe. Flush system
if necessary.
Taking the Knox Keywrench,
turn the locking bolt counter
clockwise until it stops to
ensure it is fully unlocked.
Place the FDC Plug into
coupling and hand turn
clockwise until no threads are
showing. Do not use spanner.
Hand tighten ONLY.
Tighten locking bolt head
clockwise with
Knox Keywrench until firm.
Notes: • For Swivel-Guard model, line up lugs on swivel with cut outs in swivel guard ring, then spin swivel to thread FDC plug into the connection.
• FDC Plug should easily thread into connection coupling (loose t). If the FDC Plug thread binds, remove and check threads for damage or
incorrect size.
Installation
1
2
3
4
Inspect locking bolt head and
remove any debris, if necessary.
Use the Knox Keywrench to turn
the locking bolt head counter
clockwise until fully unlocked
(Keywrench will stop).
Use the pins to unscrew the
plug from the connection.
If the locking bolt is completely loosened and the plug will still not
release, use the spanner end of the Keywrench to engage the pins
on the face of the FDC plug and unscrew counter clockwise as
shown above.
Removal CAUTION
Knox FDC Plugs are not designed to function as pressure-seal plugs for
wet systems. If the check valve upstream is defective and leaks water, the
water will go through the Plug to show leakage. The defective check valve
must then be repaired.
If your FDC system is back flushed for clean out, you must remember
to remove all of the Knox FDC Plugs so that contaminated water and
debris will not flood the plugs and cause contamination problems. This
is especially important if the sprinkler system has developed microbial
infestation.
FDC plugs should be inspected by a qualified inspector at least once a
year to ensure situations have not occurred that would damage
the device.
2.5" Plug
with Swivel-Guard™
1.5" Plug

Installers – Please Read!
Recommended Procedure to Install ALL FDC Brass Adapters
KNOX COMPANY • 1601 W. Deer Valley Road, Phoenix, AZ 85027 • [phone] • [phone] • Fax [phone] • Web: www.knoxbox.com • E-mail: [email protected]
© Copyright 2009. Knox Company
Theft of materials such as copper and brass are a growing problem for both property owners and
firefighters. Unfortunately, FDC connections now fall victim to both vandalism and theft.
Knox recommends taking the following steps to ensure the entire FDC assembly is permanently
secured to the pipe thread on the building. The FDC brass must be well-secured to the pipe,
or the entire housing and pipe is at risk of being stolen.
1 2 3 4
Use Letter F drill bit to drill a
hole entirely through the brass
adapter lip, approximately
1/2" from lip edge. One hole
provides extra security. Three
holes spaced 120° apart will
provide much better security.
Tap threads in the hole/s using
a 5/16-18 thread tap.
Clean pipe threads thoroughly
with solvent, wire brush, and
dry completely. NO grease or
oil can be present on the pipe
threads in order for adhesive to
work properly.
Apply Permabond HM162 to
BOTH threads on adapter and
threads on pipe. Coating should
be thin, but needs to completely
coat the threads.
5 6 7 8
Tighten and position FDC
brass adapter on pipe.
Use 1/4" drill bit to spot drill
through the set screw hole/s
in adapter and into pipe
approximately 1/16" deep.
DO NOT OVERDRILL TOO DEEP
AND PIERCE PIPE.
Clean drill holes of debris
then place a small amount of
remaining Permabond HM162
in hole and on set screws, then
install set screws, securing
rmly with a 5/32" Allen wrench.
After set screws have been
secured, insert a ball bearing
slightly larger than the Allen hole
into the screw head and use
punch to hammer into place.
Alternatively, ll the screw head
with a permanent epoxy material.
This will
virtually
eliminate
removal
attempts.
This procedure involves installing one or more 5/16-18 Allen set
screws as well as a special permanent adhesive in order to secure
FDC Brass to the pipe thread on
the building. This will minimize the chance of theft.
Don’t let
FDC brass fall
victim to theft!
Adapter
Lip
NOTE: To minimize potential
of pipe being stolen,
attach a clamp on the
backside of install wall.
Pipe Wall
Siamese Brass
Spot Drill Detent