For the industry standard in Air intake Protection always ask for genuine RABΞScreens RABΞScreens SAVE YOU MONEY If you have air movement you have an application for a RABΞScreen air intake filter RABΞScreen Protection stops debris before it costs you time, energy & money

1. RABΞScreens
For the industry standard in Air intake Protection
always ask for genuine RABΞScreens

2. RABΞScreens
100% GUARANTEE
WE SAVE YOU MONEY
ENERGY EFFICIENT
WE SAVE YOU MONEY
ECO FRIENDLY
WE SAVE YOU MONEY
WE SAVE YOU TIME
WE SAVE YOU MONEY
THE BOTTOM LINE?
=============================================
RABΞScreens SAVE YOU MONEY
For the industry standard in Air intake Protection
always ask for genuine RABΞScreens

3. Typical RABΞScreen Applications
Air Handling Units
Chillers
Compressor
intakes Condensers
Cooling fans
Cooling Towers
If you have air movement you have an applica on for a
RABΞScreen air intake filter
For the industry standard in Air intake Protec on always
ask for genuine RABΞScreens from RAB Specialist
Engineers
Dry air coolers Electrical
control cabinets
Generator intakes
Oil cooler intakes Supply
air louvres
Your equipment?

4. RABΞScreen Installations
Air Handling Units
Free standing splits
Chillers—internal
vee coils
Roof top chillers Chillers—external
vee coils
Air intake cowls
Chillers
Compressors
Cooling towers

5. RABΞScreen Types
Where can I use a RABScreen air intake filter screen?
Anywhere that you have air movement. It does not ma er what shape or size of opening we can design an air intake screen to
suit every applica on. Dry air coolers, chillers, air handling units, condensers, cooling towers, intake louvres and air intakes of
any design.
There are only two media types for all air intake screen applica ons.
RABScreen BHA – single layer of black, high abrasion polymer coated, polyester mesh. Black Pvc Coated High Abrasion Media is
a 9x9 1000 Denier Mul Polymer Coated Polyester Mesh. The air flow resistance of a clean BHA air intake screen single layer is
as follows:
0.50m/s 1.25pa
2.03m/s 8.75pa
3.05m/s 17.00pa
RABScreen BHC – single layer black huckaback woven polypropylene. Black Polypropylene HoneyComb Weave is three
Dimensional Polypropylene Honey Comb Weave which has a low air flow resistance whilst the electrosta c charge a racts
airborne debris. It can also be supplied in mul ple layers of media to improve par cle capture of 3 micron par cles to 93%.
The air flow resistance of a clean BHC air intake screen single layer is as follows:
0.50m/s 1.25pa
2.03m/s 12.45pa
3.05m/s 22.42pa
Where would you use BHA or BHC?
The RABScreen BHA air intake filters can only be used in a single layer but it is a high abrasion filter and is perfect for the
majority of applica ons where seed, pollen, leaves and insects are an issue.
The RABScreen BHC air intake screen is for use where fine par culate is a problem and a mul ple layer filtra on solu on is
required. Ideal for fine cement, flour, copier ink and other extra fine par culate.

6. RABΞScreen Energy Calculations
Air Intake Screen Energy Calculations
Cooling capacity Clean coil cost £ Dirty coil cost £ Extra cost
10kW 361 470 109
20kW 722 984 262
30kW 1083 1409 325
40kW 1445 1878 433
50kW 1806 2347 541
75kW 2708 3521 813
100kW 3611 4695 1084
200kW 7223 9389 2166
Qualifications
 Cooling capacity divided by a 3.19 coefficient of performance to give input kW
 kW to kWh is based on 120 days at 8 hours running per day
 kWh multiplied by 0.12 per kW to give total cost when clean
 1mm of dirt on coil surface reduces efficiency.by 21% (Dirty)
 21% reduced efficiency increases energy demand by 30% - see PG&E study
 Extra cost based upon 30% of efficient plant energy input

7. RABΞScreen fixing methods
T– Trak
R Snap
Bungee
Magnetic frame
Drop tab
Velcro®
Self Tappers

8. HOW TO MEASURE A RABΞScreen Model R Rigid Filter
RABΞScreen Model R filters are metal framed, rigid equipment protec on filters.
They are manufactured to fit any air intake opening up to and including 650mm2
.
Model R filters can be a ached via filter racks, brackets, sheet metal screws, magnets to steel cabinets, etc.
A achment should be made on as flat a surface as possible, par cularly when using magnets.
All filters are manufactured to the EXACT size ordered.
Model R filters over 650mm2
are not recommended and are not warran ed, as they are too
easily damaged in handling. When measuring for Model R filters, the filter frame will add
13mm to all edges of your intake opening measurement.
Example: Air Intake 500mm x 500mm (filter face shown in grey)
Measurements will be 526mm x 526mm (frame shown in red)
Note: If the equipment or air intake you are a emp ng to a ach to is not a flat surfaced 13mm outside of the actual
intake face, you should expand your measurement un l you can mount your frame on a flat surface. Add this to your
filter measurements.
In the above example one edge is not flat and needs to be extended by 50mm.
Measurements will be 526mm x 576mm
Magne c A achment:
Magne c stripping is riveted to one face of the rigid frame to allow simple fi ng.
Larger filters also include expanded mesh for addi onal support.
Holes Drilled:
If you want holes drilled through the outside frame, a drawing or sketch specifying
the placement of holes should be provided.
Email sales@rabse.com
Web www.airintakescreen.co.uk

9. HOW TO MEASURE A RABΞScreen Model U Flexible Filter
RABΞScreens Model U filters are flexible, vinyl framed, equipment protec on filters.
They are manufactured to fit any size or shape of air intake opening.
Model U filters can be a ached to any flat framework with drop tab fastenings, “T” track slide rail, stainless steel
grommets, hook & loop, sheet metal screws or any other fixing of your choice.
A achment should be made a flat surface if possible although some degree of misalignment is permissible.
All filters are manufactured to the EXACT size ordered.
When measuring for RABΞScreens Model U filters, the vinyl border will add 32mm to all
edges of your intake opening measurement. A narrower 19mm width can be provided upon
request.
 Example: Air Intake 500mm x 500mm (filter face shown in grey)
 Measurements will be 532mm x 532mm (frame shown in red)
Note: If the equipment or air intake you are a emp ng to a ach to is not flat surfaced
32mm outside of the actual filter face, you should expand your measurement un l you can
mount your frame on a flat surface. Add this to your filter measurements.
In the above example one edge is not flat and needs to be extended by 50mm.
Measurements will be 532mm x 582mm
Installa on:
Drop Tab Fastenings – the nylon fi ng should be located to match the centre line of the grommets. Two self‐tapping
stainless steel screws are provided with each fi ng. Pilot holes should be drilled first.
Hook & Loop (Velcro®) Fastening – the moun ng surface should be cleaned with a grease removing agent to provide a
“key”. The self‐adhesive hook strip is then secured to the frame to allow the loop strip filter to be easily fi ed.
Other Fastenings – please discuss with the RABΞScreens air intake filter screen office on 01635 248633
Email sales@rabse.com
Web www.airintakescreen.co.uk

10. RABΞScreen Protec on stops debris before it costs you
me, energy & money
RABΞScreens