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Powerflex Crash Doors

Manufactured from 60mm old heavy wall mild steel steam tube with a horizontal top tube, vertical mild steel flats and a corner gusset plate to hold the panels in position. Suitable for heavy duty external applications, with powered traffic. Powerflex doors are suitable on openings up to 4000mm wide x 4000mm high and many extras are available to increase the specification on the door framework and panels; i.e. horizontal spring unit mechanisms, dome disc protection studs, wearpads, increased overlap, larger clamping flats etc. N.B. On doors below 2600mm wide the horizontal top tubes will be replaced by triangular horizontal gusset plates.

Drawing & Dimensions

  Powerflex crash doors

Flexible crash doors are widely used in the following applications:
- Retail units and supermarkets
- Food preparation areas
- Hospitals
- Coldstores and cleanrooms
- Warehouses
- Industrial units and factories
- Postal sorting offices

Flexible doors are favoured in these environments due to their durability, ease of use, minimal maintenance and the concealed spring unit mechanism. A range of finishes to the door framework is available to suit different environments. These include powder coating electro-zinc plating and standard paint finishes. Doors with stainless steel framework are also available.

The Powerflex frame houses a unit in the top and the bottom of each tube. The mechanism is a double action, adjustable tension, torsioned spring unit concealed in the door frame and is virtually maintenance free.

 

 

Tel : +44 (0) 1494 715558

sales@harefielddoors.com

 
Door Panels
Choosing the correct door panel type can extend the lifespan of your flexible crash doors. The panels are available in new doors and as replacements for existing crash doors.

       
Panel type 1: All clear PVC 7mm or 10mm thick, suitable for light traffic. The most economical option available and allows maximum visibility. Panel type 1   Panel type 2: Seeflex 7mm or 10mm thick PVC with a coloured lower section welded to a clear upper section. Also available in sandwich style, i.e. coloured upper and lower sections with a clear centre section. Recommended for manual traffic. Panel type 2

       
Panel type 3: Composite clearflex. A black rubber lower section and a clear PVC upper section with the joint between the materials being made by a ribbed rubber buffer strip. Combinations available:- 7mm PVC/8mm rubber or 10mm PVC/12mm rubber. Panel type 3   Panel type 4: Black rubber or coloured PVC with a rectangular aluminium framed Perspex vision panel. Rubber available in 8mm or 12mm. PVC available in 7mm or 10mm. Vision panels 460mm x 150mm or 610mm x 230mm. Triangular vision panels are also available. Panel type 4

       
Panel type 5: Black rubber or coloured PVC with a 281mm diameter aluminium framed Perspex vision panel. Rubber available in 8mm or 12mm. PVC available in 7mm or 10mm, Panel type 5   Panel type 6: Sandwich clearflex. Black rubber upper and lower sections with a clear PVC centre section. Joints between materials being made with ribbed rubber buffer strips. Ideal for forklift traffic and higher doorways. Combinations available: 7mm PVC and 8mm rubber or 10mm PVC and 12mm rubber. Panel type 6
         

Panel Suitability
  PVC colours available: black, grey, white, blue, red. (Please note maximum size available on grey/white/blue/red panels is 1200mm wide per panel).
   
Panel Type Frame Type Superflex Multiflex Interflex Powerflex
7mm PVC (All clear/seeflex/col with vision) Yes Yes N/R N/R
10mm PVC (All clear/seeflex/col with vision) No Yes Yes Yes
8mm Rubber   No Yes N/R N/R
12mm Rubber   No Yes Yes Yes
7 & 8mm Clearflex or Sandwich Clearflex No Yes N/R N/R
10 & 12mm Clearflex or Sandwich Clearflex No Yes Yes Yes
  (N/R = Not recommended)        

 

Automatic Doors

Flexible doors of all specifications can be operated automatically where desired. They are often used when an optimum flow of traffic is required, for example in a busy warehouse or production area.

Flexible doors are modified for automatic operation in one direction. The direction must be specified prior to order, but the doors are able to swing in both directions manually. Flexible doors can be automated either pneumatically (air) or electrically.
Pneumatic (Air) Operation

Pneumatic operation requires an 80 psi air supply and a single phase 240 volt power supply terminated within a fused isolator approximately one metre from the opening. A feature re of having pneumatic flexible doors is that each leaf has a separate cylinder so that opening and closing cycles can be regulated independently, whereas, with the electric system there is one motor that drives both leaves through a constant speed reduction gear which cannot be varied.

  Click to enlarge

 
Electric Operation

Electric operation requires a 440 volt, 3 phase neutral & earth power supply terminated within a fused isolator approximately one metre from the opening. In the event of a power failure, the doors can still be used as conventional 'crash' doors as they are driven though the vertical spring unit mechanism at the top of the door tube. Both systems are supplied complete with a control panel which incorporates an adjustable timed return facility that enables the doors to close automatically once the desired stand open time has elapsed.

   Click to enlarge

 

Actuation
Both Pneumatic and Electric flexible doors can be operated by a variety of (and combinations of) types of actuation that wire straight into the control panel provided, needing no other source of power feed. The different types of actuations available are:

Pull Switches
Commonly used by forklift truck drivers, which eliminates the need to dismount as the pull cord is normally mounted from the ceiling.

Push Buttons
Commonly used by pedestrians who simply push the button to open the doors.

Photocell Beam and Reflector
Commonly used in corridor situations. It consists of a projector beam and reflector and actuates the doors upon the beam being broken.

Microwave Radar Scanner Detection Units
This type of actuation is suitable in situations where the approach to the opening is restricted as traffic operating across the opening may actuate the door. A scanner unit is fitted to the face of the opening and detects movement of pedestrians or vehicles.

Induction Loops
This is the most popular form of actuation. The loops are laid in the floor and pick up the movement of traffic, which sends a signal to the control panel to open the doors. This type of actuation is strongly recommended when there is heavy fork lift traffic. Note: This actuation will not recognise pedestrians using the opening.