AIRBLAST Nova Blast User manual
INSTRUCTION MANUAL
Doc. no MN4003E Rev. A - Mar 2012
Nova Blast Helmet
IMPORTANT WARNING FOR SAFER BLAST CLEANING
1. Use protective equipment: Abrasive-resistant clothing, safety shoes, leather gloves,
ear protection, CE-approved air-fed helmet. Air for helmet must be supplied by a
breathingaircompressororthroughahelmetairlter.
2. Check for possible silicosis hazards. Avoid dust.
3. Do not blast with damaged or worn equipment.
4. Point nozzle only at area being cleaned.
5. Useonlyproperdryandwell-screenedabrasivesspecicallyintendedblasting.
6. Keep unprotected workers out of the blast area.
7. Before blasting:
-Checkttingsandhoseforwear.
- Safety-wire couplings together.
-Checkhelmetltersandairsupply.
- Check pop-up valve for alignment.
- Test remote controls.
- Make sure blast machine is adequately grounded.
8. Do not weld on blast machine, this voids approval.
9. DonotsubstituteAirblastpartsormodiedequipmentinanyway.
Airblast B.V.
P.O. Box 1075
1700 BB Heerhugowaard
The Netherlands
Tel. : + 31 72 5718002
Fax : + 31 72 5714340
Web : www.airblast.com EN271: 1995
INDEX
INTRODUCTION 1
COMPONENT CONCEPT 1
WARNINGS 2
OPERATION 3
BREATHING AIR PRESSURE TABLE 3
AIR FLOW CONTROL VALVE & LENSES 4
SETTING UP 4
INSPECTION, CLEANING AND STORAGE 6
PARTS AND DRAWING 7
INTRODUCTION
TheNOVACOMPRESSEDAIRLINEBREATHINGHELMETEN271isspecicallydesignedforuseduring
Abrasive Blasting.
The NOVA has been designed for use in atmospheres NOT IMMEDIATELY DANGEROUS TO LlFE OR
HEALTH, and from which a user can escape without the aid of the breathing helmet, or that do not ex-
ceed concentrations allowed by Government regulations and recommendations.
The NOVA is tested and approved to EN 271:1995 and AS/NZS 1716:2003 to provide respiratory pro-
tection in abrasive blasting applications and is CE approved.
The cape is designed to protect the wearer’s upper body from rebounding abrasive.
The NOVA provides an assigned Protection Factor at APF 1000.
Due to the high noise levels during abrasive blasting hearing protection must always be worn.
COMPONENT CONCEPT
The NOVA COMPRESSED AIRLINE BREATHING HELMET consists of two main components: HELMET AS-
SEMBLY and BREATHING TUBE ASSEMBLY illustrated in Fig. 1.1. All two components must be present
and properly assembled to constitute a complete EN271 approved Compressed Airline Breathing Hel-
met.
Page 1
! WARNING !
FAILURE TO USE APPROVED NOVA PARTS
and components voids the approval of the entire helmet assembly.
Fig. 1.1
! WARNING !
Do not use this helmet until you have been trained in the helmet use, maintenance
andlimitationsbyaqualiedindividual(appointedbyyouremployer)
who has extensive knowledge of the NOVA.
Before using this helmet ensure your employer has determined that airborne contaminant concentrations
do not exceed those allowed by Government regulations and recommendations for a compressed air line
breathing helmet. It is required that the employer measures and monitors airborne contaminant levels
intheworkarea.TheNOVAisnotdesignedforuseinammableatmospheres.
DO NOT WEAR this helmet if any of the following conditions exist:
- Atmosphere is immediately dangerous to your life or health
- You CAN NOT escape without the aid of the helmet
- Atmosphere contains less than 19.5% oxygen
- Work area is poorly ventilated
- Contaminants are in excess of regulations or recommendations
- Radiation exists in the work area, or materials are Radioactive
Do not modify or alter this helmet. Usa only approved NOVA components and replacement parts. The use
of non approved parts voids the EN 271 approval of the entire helmet assembly.
Inspect all components of the helmet daily for signs of damage or wear and tear that may reduce the
level of protection originally provided.
Do not use abrasives containing silica, lead, arsenic or sharp glass particles - use of abrasives containing
these elements could result in serious injury or death.
DO NOT wear this helmet until you have passed a complete physical examination including a lung X-ray
conductedbyqualiedmedicalpersonnel.
Improper use of this helmet may cause injury or death. Improper use may also cause life threatening
delayed lung diseases such as silicosis, pneumoconiosis or asbestosis.
Thishelmet,whenproperlyttedandused,signicantlyreducesbutdoesnotcompletelyeliminatethe
breathing of contaminates by the helmet wearer.
BE CERTAIN your employer has determined that the breathing air source provides at least EN 12021
breathableair.Thehelmetmustbesuppliedwithcleanlteredbreathingairatalltimes.
DO NOT connect the helmet’s air supply hoge to nitrogen, toxic gases, inert gases, oxygen, oxygen en-
riched or ether unbreathable non EN 12021 air sources. Check the air source before using the helmet.
This helmet is not designed for use with mobile air supply systems i.e. cylinders. Failure to connect the
supply hoge to the proper air source could result in serieus injury or death.
DONOTusethishelmetinpoorlyventilatedareasorconnedspaces.
Ensure the area is weil ventilated and that the contaminant concentrations are below these recommen-
dedtorthishelmet.Followallproceduresforconnedspaceentry,operationandexitasdenedinap-
plicable regulations and standards.
LEAVE WORK AREA IMMEDIATELY IF:
- Any helmet components become damaged
- Airowstopsorslowsdown(asshowninFig.2.1and2.2onpage4)breathingbecomes
difcult
- You become dizzy, nauseous, too hot, too cold or ill
- Vision is impaired
DO NOT wear this helmet if the ambient usage temperature is below -10°C or above +60°C. Moisture
content of breathable air should be controlled when the helmet is to be used in temperatures below 4°C
to avoid freezing the helmet.
Page 2
Page 3
OPERATION
Air quality
This helmet must be supplied with clean breathable air, to EN 12021 or better, at all times. The NOVA
doesnotpurifyairorltercontaminants.Breathableairmustbesuppliedtothepointofattachmentof
the approved Airblast air supply hose.
Supplied breathing air must at least meet the requirements for EN 12021.
Air source
Locatetheairsourceinacleanairenvironment,alwaysusealterontheinletofyourairsource.
Do not park vehicles beside your air inlet as this will cause carbon monoxide to be drawn into your
air supply.
Usesuitableaftercoolers/dryerswithltersandcarbonmonoxidealarmstoassurecleanbreathable
air is supplied at all times.
The air should be regularly sampled to ensure that it meets EN 12021 requirements.
Air supply hose and ttings
Approved air supply hoses must be used between the point of attachment and the helmet breathing
airconnectionatthewearer’sbelt.Quickdisconnectttingsmustbeusedtoconnectthehoselengths
together. The hose sections must be within the approved length and the amount of sections must be
withinthenumberspeciedinthebreathingairpressuretable(seebelow).Thebreathingairsupply
hose has a working pressure of 7 bar.
Breathing air pressure
Theairpressuremustbecontinuallymonitoredatthepointofattachmentwhiletheairisowingto
thehelmet.Airpressuremustbereadfromareliablepressuregaugewhilstthehelmethasairowing
through it.
! WARNING ! Failure to supply the helmet with the minimum required pressure at the point of attach-
ment for the length of air supply hose used could result in contaminants, being inhaled as the pressure
inthehelmetmaybecomenegativeduetopeakinhalationowwhenworkingatveryhighworkrates.
Breathing air pressure table
This table lists air pressure ranges needed to provide the ASTRO with the volume of air that falls within
the required range of 170-250 ltr/min according to the EN 271 approval.
Table 1.1
1.
Air Source
2.
Breathing
Tube
Assembly
3.
Air Supply
Hose
4.
Supply Hose
Length
(mtr.)
5.
Max. Number
of Sections
6.
Pressure
Range
(bar)
Portable
or
Stationary
Compressor
Flow
Control
Valve 2527000
10
20
30
40
50
60
1
1
2
2
3
3
1.50
1.55
1.75
1.90
2.00
2.10
Settheairpressureatthepointofattachmenttothepressuresettingspeciedincolumn6foryour
breathingtubeassembly,hoselengthandamountofhosesections.Makesuretheairisowing
throughyourhelmetandtheowcontrolvalveisintheMIN(closed)positionwhensettingthe
pressure. Fig. 3.2 on page 4.
! WARNING !
DO NOT SET THE AIR PRESSURE WITH THE FLOW CONTROL VALVE IN THE MAX. POSITION
(OPEN),ASTHISINCREASESNOISELEVELS.
ALWAYS WEAR EARPLUGS WHEN WEARING THIS HELMET.
LOW FLOW INDICATOR
! WARNING !
Donotwearthehelmetiftheindicatoroatisnotvisibleasairow
isbelow170ltrs./min.(Fig.2.2).
AIR FLOW CONTROL VALVE
AirowingintothehelmetiscontrolledbyusingtheFlowControlValveasshownbelow.
Fig. 3.1 Fig. 3.2
LENSES
AlwaysmakesurethatanapprovedNOVAinnerlensissecurelyttedintothewindowframegasket.
Fit an outer lens onto the tabs on the visor, fold the visor onto the helmet and secure it with the latch,
making sure there are no gaps between the visor and the window frame gasket.
Optional tear-off lenses can also be used with the outer lens. It is recommended to use 2-3 tear-off
lenses and an outer lens for extra protection.
! WARNING !
Do not use the helmet without an inner lens in place.
SETTING UP
1. First screw the breathing hose onto the helmet.
2.Screwthelooserunningnutontotheowcontrolvalve.
3.Takethequickdisconnectttingontheairsupplyhoseandpushontothetailoftheowcontrol
valve.
4.ConnecttheAirSupplyHoseTailtotheAirblasthelmetairltersupplyingEN12021gradeair.
Page 4
HELMET LININGS
The helmet lining consist of 3 main parts:
1.TheSidewings(2parts,oneleft,oneright)
2. The Head dome
Theliningissuppliedasasetavailableinsizessmall,mediumandlarge.Standardmediumistted.
PUTTING THE HELMET ON
Hold the helmet in front of you, holding the inner bib collar open. Lift the helmet and place it on your
headmakingsuretheheadharnesstssecurely.
FITTING THE CAPE AND BELT
1. Oncethehelmetisttedcomfortablyonyourhead,straightenthecapedownatthefrontand
the back.
2. Placetheowcontrolvalveinthedesiredpositionandwrapthethebeltaroundyou.
3. Now bring both buckles together at the front and push them until you hear a click. Pull the tab
to tension the belt to your requirements.
ADJUSTING THE AIRFLOW
Nowthehelmetisfullyttedandthebelttightened,adjusttheairowintothehelmetwiththeFlow
ControlValveadjustementbarrel(seeFig3.1onpage4).
Again check the air pressure at the source to make sure it is still in accordance with Table 1.1 on page
3.
Page 5
Page 6
INSPECTION, CLEANING AND STORAGE
The NOVA Blast Helmet has a limited service life, therefore a regular inspection and replacement pro-
gramme must be conducted. Certain parts such as ranges must be replaced frequently.
All components of this helmet assembly should be inspected tor damage or waar and tear before use.
Replace worn or damaged parts immediately. USE ONLY APPROVED NOVA PARTS. Refer to the parts list
tor the correct part numbers.
REMOVING THE CAPE
First remove the cape cover band to reveal the tour press studs. The cape can then easily be removed
by undoing the tour press studs.
INSPECTING THE HELMET
Having removed the cape, wipe out the inside ot the helmet with a soft cloth and mild detergent.
Check the inside tor cracks in the shell.
INNER LENS AND GASKET
Makesurethewindowframegasketissecurelyttedintothehelmetwithnocracksortearsinthe
seal.Checkthattheinnerlensiscorrectlyttedintothegasket.Whennecessaryreplacelenses.
BREATHING TUBE ASSEMBLY:
Inspectthebreathingtubeforcracks,tearsorexcessivewear.Checkthatthettingsaresecuredinto
the cuffs tightly, not allowing any air leaks.
Replace the hose as soon as any signs of damage or excessive wear become evident. Do not remove
the foam that is inside the breathing tube as this is a critical component.
AIRBLAST AIR SUPPLY HOSE
The air supply hoses should be inspected for:
1. Cuts or tears
2. Cracks or signs of perishing
3. Blisters or weak points
4. Abrasive wear
5. Ferrulesrmlycrimpedinplace
6. Quick disconnect coupiers do not move in the hose or are not worn, remove any dirt
inside couplings with a duster gun.
USE ONLY HOSES APPROVED FOR USE WITH THIS HELMET.
STORAGE
After the helmet components have been cleaned and inspected, place them in a plastic bag or an air-
tight container. Store all parts away from excessive heat, dust, cold, moisture or harmful chemicals.
After use hang the helmet up by the hand strap, this will help keep the inside of the helmet free of
contaminants.
! WARNING !
Airleakswillcauseadropinairowthroughthehelmetresulting
in less protection from contaminants.
! WARNING !
DO NOT CLEAN HELMET WITH VOLATILE CHEMICALS.
NOVA BLAST HELMET
ITEM PART NR DESCRIPTION
01. 4700000 Nova Air Supplied Blast Helmet, complete
SPARE PARTS
ITEM PART NR DESCRIPTION
01. 4700100 Helmet shell
02. 4700500 Nylon cape c/w inner bib
03. 4702400 Window frame gasket
04. 4702500 Visor with hinge and screws
05/06. 4702700 Air inlet assy
07. 4702800 Visor latch and screws
08. 4701100 Polystyrene helmet liner
09. 4701700 Sidewings(medium)
10. 4701000 Inner bib
11. 4705100 Cape cover band
12. 4601600 Flow control valve and belt
13. 4703600 Innerlens(packof10)
14. 4703800 Outerlens(packof50)
15. 4703700 Tear-offlens(packof50)
17. 4601700 Belt with buckles
18. 4601400 Breathing air tube
Page 7
Page 8
NOTES
Page 9
NOTES
Airblast B.V.
P.O. Box 1075
1700 BB Heerhugowaard
The Netherlands
Tel : +31 72 5718002
Fax : +31 72 5714340
Web : www.airblast.com
Airblast Middle East L.L.C.
P.O. Box 33419
Dubai
United Arab Emirates
Tel : +971 4 3242776
Fax : +971 4 3242778
Airblast Saudi Trading & Industrial Est.
P.O. Box 30476
Al-Khobar 31952
Kingdom of Saudi Arabia
Tel : +966 3 8473178
Fax : +966 3 8471430
Airblast Qatar WLL
P.O. Box 47044
Wakra
Qatar
Tel : +974 4 4631043 / +974 4 4631074
Fax : +974 4 4631154
Asia Airblast Pte Ltd.
13, Kian Teck Crescent, #02-00
Singapore 628878
Tel : +65 6266 6010
Fax : +65 6266 6968
AB Corrosion Control Equipment Sdn Bhd
No. 33, Jalan Permas 3/18
Bandar Baru Permas Jaya
81750 Masai, Johor Darul Takzim
Malaysia
Tel : +60 7357 7989
Fax : +60 7357 7689
Airblast Equipment India Private Ltd.
#6-1-73/Unit - 207 ‘SAEED PLAZA’
HDFC Bank Building
Lakdi Ka Pul
Hyderabad 500004-AP
India
Tel : +91 40 6674 8855
Fax : +91 40 6674 8851
AIRBLAST GROUP
© 2012 Airblast reserves the right to make changes at any time without notice.
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