2.1. FILTER PROTECTION FACTORS.
Filter type . . . . . . . . . . . . . . . . . . . .A1P2
Filter Class . . . . . . . . . . . . . . . . . .A1P2s
Label Colour . . . . . . . . . . . . . . . . .Brown/White
Standard . . . . . . . . . . . . . . . . . . . .EN 141
Application . . . . . . . . . . . . . . . . . . .Organic gasses and vapours, particles and water based aerosols.
Laboratory Protection Factor . . . . .Dust = 12. Gas = 50
Assigned Factor . . . . . . . . . . . . . . .Dust = 10
Protection BS4275 . . . . . . . . . . . . .Gas = 10
2.1.1. Protection Factor Selection.
a)
The Pre-filters provided with the kit are recommended for use with the A1P2 filter.
b)
The above chart details are both
Laboratory
protection factors and
Assigned
protection factors.
1.
Laboratory
protection factors are minimum requirements which have been achieved in the laboratory
during certification testing .
2.
Assigned
protection factors are the protection factors as detailed by BS4275:1997 which is based on work
piece studies. These suggest that
Assigned
levels are what could reasonably be achieved by the majority
of persons in the work place who have been correctly trained in fitting, use, and maintenance of mask and filters.
NOTE:
We recommended when deciding product suitability the
Assigned
protection factor is used.
2.2.
CONTAMINANT FACTORS.
Dividing the concentration of a contaminant in the work place atmosphere by the Occupational Exposure
Limit (OEL) of that contaminant will show you the minimum Protection Factor required
2.2.1. Example:
Concentration of contaminant X in work place atmosphere = 200PPM Min Protection Factor required = 200 = 8
Occupational Exposure Limit of contaminant X
= 25PPM
25
2.3.
SELECTION FACTORS.
1.
Ensure equipment to be used offers a Protection Factor
GREATER
than the minimum shown by your calculation.
2.
If protecting against particles and gases select a Combination Filter that offers suitable Protection Factors for
both contaminants.
3.
If the minimum Protection Factor required is
CLOSE
to the Protection Factor shown in the chart for a given
Respirator and Filter combination, we recommend the use of equipment offering a
higher Protection Factor
.
NOTE:
For details of OELs and recommendations of filter types for specific contaminants refer the HSE
guide to OELs - EH-40.
The respirator is suitable for use in temperatures between -20
O
C and +70
O
C.
2.4.
DEFINITION OF TERMS
PARTICLES: . . . . . . . . . . . . . . .Dusts, fibres and fumes.
GASES: . . . . . . . . . . . . . . . . . .Gases and vapours.
LIQUID BASED AEROSOL: . . .Is a suspension of liquid droplets in air.
WATER BASED AEROSOL . .Is one which is produced from a solution and/or a suspension of solid
. . . . . . . . . . . . . . . . . . . . . .materials in water such that the only hazardous component is attributable
. . . . . . . . . . . . . . . . . . . . . . . . .to the solid material.
COMBINATION FILTER . . . . . .A filter that offers protection in different types and classes.
Example: A1P2 filter offers Type A, Class 1 protection against gases & Class 2 protection against particles.
2.
PROTECTION FACTORS
3.
FILTER FITTING
4.
FITTING THE RESPIRATOR
IMPORTANT.
Before fitting remove the Blanking pad (or disc, the thin black flexible pad fig a and fig2 item C)
from inside the pre-filter cover. Keep the pad safe for latter use.
1.
Check that you have the correct type of filter for the intended application, and check the
filter for signs of damage.
2.
Remove any existing filter from the mask by twisting ant-clockwise.
3.
Check that the filter seal on the front of the mask is intact and not damaged (fig 1 item A).
4.
Remove the Blanking pad (or disc, fig 2.C) from inside pre-filter cover (D), and keep safe for later use, and
lay a pre-filter (B) inside the cover (D).
5.
Clip the pre-filter cover (D) onto the main filter (A) and push the cover home.
6.
Hold the mask and align the small arrow on the side of the filter connector (fig 2.1.) with the the top of the
masks inlet connector (fig 1.A).
7.
Hold the filter flush against the surface of the mask inlet (fig 3), and gently turn clockwise until the filter
cover cross bars are aligned with the mask louvers (fig 4).
Fitting of the respirator must be supervised by a competent person. Before donning
equipment, ensure the correct filter is fitted and that the mask valves are in place,
un-damaged and correctly seated (fig 5. A = Exhale, B = Inhale valve).
1.
Remove pre-filter cover take out pre-filter and place to one side for use when mask has been fitted.
2.
Hold mask to your face placing the narrow rim over your nose and the wider section onto your chin.
3.
Pass the top head harness over your head, and check to ensure it is not twisted.
4.
Adjust the head harness to provide a comfortable fit.
5.
Take each lower neck straps and place them round the back of your neck and snap together. Adjust the
straps until they fit snugly around the neck.
6.
Take the pre-filter cover (fig 2. D), place the Blanking pad (or disc, fig 2. C), inside the cover and fit to the mask.
7.
Lightly inhale so that the air becomes restricted creating a partial vacuum inside the mask.
The mask should now adhere to the face which indicates the mask has been correctly fitted and is sealed.
If the mask fails to adhere correctly, re-adjust the face mask and straps, then repeat 6 above until a
correct fit can be achieved.
p
WARNING!
If a correct fit cannot be achieved the respirator MUST NOT be used.
8.
When the respirator is correctly fitted to your face, remove the Blanking pad (or disc) from the filter cover and
replace with the pre-filter. Attach the cover back onto the main filter (fig 2.A).
9.
If all appropriate instructions have been correctly followed you are ready to proceed with the assigned task.
p
WARNING!
DO NOT use or store the respirator with the blanking pad in place. DO NOT expose the
blanking pad to chlorinated solvents, ketones or aromatic hydrocarbons, either in use or in storage.
fig 1.
fig 2.
fig 3.
fig 4.
fig 5.
5.
CLEANING & MAINTENANCE
IMPORTANT.
It is essential that the respirator is kept clean and correctly maintained to ensure it is in efficient
working order. COSHH regulations require maintenance records to be kept. Dates of inspection and replacement
of parts should be recorded on a record card.
5.1.
FILTERS
5.1.1. Cleaning & storage.
1.
Remove the filter from the mask and the pre-filter cover from the main body.
2.
Gently wipe any dust from the casing with a soft dry cloth avoiding contact with filter pads.
3.
Store the filter and pre-filter cover in a dry, clean location avoiding extremes of humidity and temperature.
5.1.2. Changing Filters.
1.
A competent person will regularly check filters to determine if replacement is required.
a)
Dust filters:
Change when an increase in breathing resistance is noticed.
b)
Gas filters:
Change immediately any breakthrough of the contaminant is detected by smell or taste.
2.
The A1P2 Combination filter must be changed using either of the above criteria. Actual life of filter is wholly
determined by the individual circumstances in which they are used and is affected by breathing rate, type
of contaminant, concentration of contaminant, circumstances of exposure, and many other factors.
3.
Frequent replacement of pre-filters will prolong the life of dust and combination filters.
NOTE:
If working with gaseous contaminants with an odour threshold below the OEL, or for users with an
impaired sense of smell, use Air Fed breathing equipment. We recommend our SSP200K and SSP25K.
5.2.
FACE MASK.
1.
Prepare a mild soapy warm water wash with a 1-10 (10%) dilution of TCP antiseptic solution.
DO NOT use detergents, thinners, solvents, petroleum, or other disinfectants.
2.
Check that the filter has been removed, then remove the louvers valve covers and head straps
(DO NOT REMOVE THE VALVES).
3.
With a soft clean (lint free) cloth, use the prepared wash to swab the components ensuring you clean
both the inside and the outside of the face mask.
NOTE:
Take great care to avoid damage to the valves.
E
fig a.
SSP1698, SSP1698/FP - 0000 - (2) - 170999
