STI UNIVERSAL STOPPER User Manual
UNIVERSAL STOPPER® SERIES
See Approvals
INSTALLATION INSTRUCTIONS
ADA
Compliant
For Details
Features
· Can be used as a guard against physical damage to a device with or without optional
warning horn.
· Cover locking tab to help prevent tampering.
· Optional horn has choice of 95 or 105 dB at 1 ft.
· Three year guarantee against breakage of polycarbonate in normal use (one year on
electro mechanical and electronic components).
· UL/cUL Listed (Enclosed Flush Backbox model pending).
· ADA Compliant.
· Waterproof Backbox, UL Listed to NEMA Type 3X Standard (pending).
· IP Rating equivalencies.
We protect the things that protect you.
Parts Provided (per mounting option)
DESCRIPTION Part No. Qty. Flush Surface Enclosed Enclosed
Backbox
Cover Assembly 1 X X X X
#6 x 1 ¼” Phil Pan Hd Screw 19039 4 X X X X
Plastic Wall Anchor 19018 4 X X X X
Cover Gasket 01316 1 X X X X
Device Mounting Plate 01310 1 X
#6-32 x ½” Phil Flat Hd Screw 19099 6 X
#6 O-ring 01317 4 X
3/4” NPT Plug* 01309 1 X
Solid Insert* 01311 2 X
Conduit Insert* 01312 2 X
1/2” & 3/4” Conduit Weather Gasket STI-6004 2 X
3 Inch Gasket 01318 2 X
#6-32 x 1/2” Phil Pan Hd Screw 19054 2 X
*Available in red, green, blue, yellow, white or black. Inserts also available in clear.
Flush
Backbox
Approvals
It has been tested and approved or listed by:
· Underwriters Laboratories (Enclosed Flush Backbox model pending)
· UL Certified to meet ADA Compliance
· NEMA Type 3X Enclosed Flush Backbox and Backbox (pending)
· IP56 flush, surface and backbox with open mounting plate; IP66 backbox with sealed mounting plate
PATENTS:
United States No. 4,267,549, Canada No. 1,147,828
Specications
Polycarbonate Enclosure
· Flammability - cover and frames: UL 94 V-2, enclosed backbox: UL 94 5VA
· Cover wall thickness 0.12 inches
· Only the BACKBOX mounting options meets NEMA Type 3X (pending)
Gaskets
STI-1316 Cover Gasket - Neoprene 0.070 in. dia.
STI-1318 3” Gasket - Neoprene 1/8” diameter
Mounting Gasket (embedded in housing at STI factory prior to shipping) - Two part polyurethane
STI-1326 1/2” or 3/4” Conduit Weather Gasket - Closed Cell IV-2
Horn 9V (Battery included) 12V 24V
· Low (95 dB @ 1 ft.) 40mA 38mA 22mA
· High (105 dB @ 1 ft.) 105mA 125mA 95mA
· Min. Operating Req. 2V @ 20mA 4V @ 20mA 4V @ 20mA
Dry Contact Relay
· 30 VAC/VDC, 1A
Temperature Range
· Electronics Operating Range: -40° to 120°F (-40° to 49°C) Below -4°F (-20°C), a remote
power source is recommended
· Polycarbonate Rated: -40° to 284°F (-40° to 140°C)
- 2 -
Warranty
Three year guarantee against breakage of polycarbonate in normal use (one year on electro
mechanical and electronic components).
Electronic warranty form at www.sti-usa.com/wc14.
Important Notice (when used on fire systems)
The Universal Stopper is intended to be used in areas where the incidence of false fire alarms from
manual pull stations is high or has proven to be a serious problem. Any disadvantage of this device
is more than balanced when one considers the consequences of false fire alarms, especially if fire
service personnel and equipment are responding to a false fire alarm when they are needed for a real
fire somewhere else. Add to this, the disruption to the facility when false alarms occur. If you have,
or may have, a problem with false fire alarms or physical/weather damage to your fire alarm activation
devices, the Universal Stopper could prove invaluable.
Installation Notes
· When used outdoors, the manual pull station must also be rated for outdoor use.
· UL Listing does not permit connection of horn relay contacts to fire alarm or life safety devices.
· According to UL Listing, models powered from an external power source cannot be supplied from
the fire alarm panel.
· When properly installed, the operation of this cover will not interfere with the function of your life
safety system.
· Horn operation and performance must be tested annually. Battery replacement is recommended
annually dependent on usage and battery expiration date.
· Ensure the service pin is properly inserted in the service pin receptor to silence horn while
performing installation or servicing horn.
· If mounting to an uneven surface, a backplate (STI-1314) is recommended to help ensure proper
sealing to mounting surface.
· The backplate may be drilled if wire access or screw mounting holes are needed.
Installation Instructions
1. Center the pull station to the Universal Stopper with the help of the dimensions in Fig. 1. Open
cover and use the mounting frame or optional backplate to mark the mounting hole locations as
in Fig. 1. Be sure the entire cover travel will not interfere with operation of the pull station or
other safety system equipment when installed.
TEXT HERE
6.45 in.
(164mm)
2.73 in.
(69mm)
LIFT HERE
4.58 in.
(116mm)
- 3 -
2.29 in.
(58mm)
LOCKING
TAB
Fig. 1
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