Weather Stopper® clear polycarbonate cover without horn, but with English labelling for surface mounted manual pull stations

Weather Stopper Cover – Weather-Resistant Protection (English Instructions)

The Weather Stopper is specifically engineered to protect manual fire alarm pull stations from challenging environmental conditions. This surface-mount model features specialized gaskets that create a barrier against rain, snow, dust, and humidity. Unlike the Stopper II with alarm, this version focuses on environmental sealing and physical protection without a local siren.

This cover is UL listed hence the equipment and its installation meets Canadian standards. This piece of equipment is ideal for fire safety in public locations such as schools, hospitals, mills, etc.

STI™ product code: STI-3150

Weather Stopper® covers protect manual pull stations from impacts and help prevent false fire alarms without restricting legitimate alarms. The cover can easily be lifted and is connected to the frame by a metal cable. It was designed for indoors use as outdoor use. Such an accessory requires a double action to trigger a fire alarm compared to a simple pull station which requires one sole move.

All labeling on the cover and instructions provided in the package are in English (PDF version available for download).

External dimensions:

Length 7.125 in x Height 10 in x Depth 5.5 in
(Length 18.1 cm x Height 25.4 cm x Depth 14 cm) 

Inner dimensions:

Length 5.5 in x Height 6 in x Depth 5.5 in
(Length 14 cm x Height 15.24 cm x Depth 14 cm)

Polycarbonate thickness: 0.095 in (2.4 mm)

This cover fits most pull station models, mainly surface mounted ones.

Covers with French labeling are also available as prescribed by the Province of Quebec regulations (see item ECSTI3150FRE).

Polycarbonate properties:

Polycarbonate is a clear low flammability material highly resistant to impacts which features impressive mechanical and thermal properties, hence its use in so many fields. It is commonly used to manufacture safety eyewear, protective faceshield, law enforcement shield, optical lenses, thermal imaging and so many other vandal-proof items. The polycarbonate used for the fabrication of Weather Stopper® covers is UV-stabilized against degradation caused by the sun.

Key Benefits: Sealing and Reliability

This model is essential for ensuring the longevity of your fire alarm devices in non-climate-controlled environments:

• Superior Weather Sealing: Equipped with silicone/neoprene gaskets that protect the manual station against water infiltration (rain, water jets) and corrosion.

• Physical Impact Protection: Made from high-strength polycarbonate (police-shield quality), it guards against accidental impacts from machinery or acts of vandalism.

• Surface Spacer Included: Designed specifically for surface-mount (protruding) installations, allowing the box to be perfectly sealed against the wall.

• English Instructions: The cover features bright red silk-screened text: "In case of fire, lift cover and pull station".

• UV Resistance: The material is treated to prevent yellowing or becoming brittle when exposed to direct sunlight.

Technical Specifications

• Mounting Type: Surface Mount (protruding).

• Material: Ultra-rugged clear polycarbonate.

• Local Alarm: None (Silent model).

• Language: English.

• Weather Rating: Weather-resistant (Gasketed).

• Certifications: UL/cUL Listed.

Application Guide: Recommended Installation Zones

This protector is recommended for areas where temperature and humidity fluctuate:

1. Parking Garages: Protection against exhaust fumes, moisture, and road salt.

2. Loading Docks & Hangars: Areas exposed to drafts, wind-driven rain, and precipitation.

3. Water Treatment Plants or Pools: Environments with high humidity or risk of splashing.

4. Outdoor Facilities: Parks, sports fields, or building exterior entrances.

FAQ: Frequently Asked Questions

Can this be used in wash-down areas?

Yes, the sealing gaskets are designed to protect the manual station from water sprays, making it an excellent choice for food processing plants or industrial wash-down zones.

What is the difference between this and a regular Stopper II?

The Weather Stopper includes additional gaskets and a hinge design specifically intended to shed water and prevent moisture buildup, whereas the standard Stopper II is primarily intended for indoor use.

Occupational Health and Safety (OHS) Expert Advice

• Watertight Installation: For maximum effectiveness outdoors, apply a bead of silicone sealant around the frame if the wall surface is irregular (e.g., brick or rough concrete).

• Accessibility: Periodically check that the gaskets are not sticking to the frame due to extreme heat or cold, ensuring the cover can be lifted effortlessly in an emergency.

• Cleaning: Use only a soft cloth and mild soapy water. Avoid abrasive chemicals that could scratch the polycarbonate and reduce the visibility of the instructions.

Maintenance and life service:

Some basic practices should be adopted to maintain manual pull station covers. It is thus recommended to wash the cover with lukewarm water and a gentle soap. The manufacturer strongly advises not to use steel pads since they scratch any surface they touch which will temper with the legibility of the label. It also is not recommended to use harsh soaps on the cover since polycarbonate doesn’t mix well at all with a wide array of acids and other chemical compounds. Indeed, these products will make your cover kind of melt. If the cover surface isn’t soft to the touch and bubbles appear, the cover has been corrupted and must be replaced.

As for its life service, the manufacturer asserts that his Weather Stopper® covers are durable; some have been in service for almost 20 years.

Need additional safety equipment? See the following items: