c) Breathing becomes difficult.
d) Dizziness or other distress occurs.
e) You taste or smell contaminants or an irritation occurs.
Never modify or alter this product, replace parts only with original 3M parts.
Do not use oxygen or oxygen enriched air.
Do not use in flammable or explosive atmospheres (Call 3M OH&ES Technical Affairs at your local
3M office).
If using in Supplied Air mode ensure that:
• The source of the air supply is known;
• The purity of the air supply is known;
• The air supply is of a breathable quality, to EN12021 (UK customers use BS4275).
Only suitable for use by clean-shaven personnel, facial hair under the seal reduces protection.
Use only with recommended spectacles. Contact your supplie.r
High winds above 2m/s, or very high work rates (where the pressure within the headtop can become
negative) can reduce protection.
Adjust equipment as appropriate or consider an alternative form of respiratory protective device.
Materials which may come into contact with the wearers skin are not known to cause allergic reactions
to the majority of individuals.
These products contain no components made from natural rubber latex.
EQUIPMENT MARKING
For air filter unit / regulator marking please see appropriate User Instruction.
The 400 Series headtops are marked to EN1835 LDH2, prEN146 (rev) TH2 and EN12941 TH2.
The visors are marked:
Polycarbonate visor: EN166:2:B:3:9
Acetate visor:
EN166:2:F:3
PREPARATION FOR USE
Check apparatus is complete, undamaged and correctly assembled, any damaged or defective parts
must be replaced before use.
Undertake pre-use checks on air filter unit or regulator assembly as outlined in the appropriate user
instruction.
Headtop adjustment
The headtop should be adjusted to give the best face seal and field of vision.
The headtop can be adjusted as shown in Fig 1.
OPERATING INSTRUCTIONS
DONNING
1. Select an approved breathing tube (Please see 400 Series Reference leaflet for list of 3M approved
breathing tubes) and connect top end to the headtop assembly.
2. Connect the bottom end of the breathing tube to the outlet of the regulator / air filter unit.
3. Adjust and fit the air filter unit / regulator as outlined in the appropriate User Instruction.
4. Place headtop over head, adjust and ensure elasticated face seal is providing an effective seal.
5. Switch on the air filter unit or connect the compressed air supply tube to the regulator.
6. Ensure at least minimum airflow into the headtop is achieved and adjust for maximum comfort –
see appropriate User Instruction.
IN USE
Use in the power / air supply off state is not normal, little or no protection is provided, vacate the
contaminated area immediately.
Take care to prevent the breathing tube from becoming looped around protruding objects.
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USER INSTRUCTIONS
Please read these instructions in conjunction with the 3M 400 Series Reference leaflet
where you will find information on:
• Approved combinations of air filter units (AFU’s) and regulators
• Spare parts
• Repair kits
• Accessories
UNPACKING
Your 400 SERIES Headtop should contain:
a) HT-401 Headtop
049-00-57P or
HT-402 Headtop
049-00-56P
b) User Instructions
611-12-31
c) Reference Leaflet
611-12-38
d) Visor Chemical Compatibility Guide
532-20-24
FOREWORD
Failure to follow all instructions on the use of this product and/or failure to wear the respirator
system during all times of exposure may adversely affect the wearer's health, may lead to severe
illness or permanent disability and may render any warranty null and void.
If you have any doubts about the suitability of the product to your job situation, it is recommended that
you consult an occupational hygienist, or call 3M OH&ES Technical Affairs at your local 3M office.
See back of this booklet for addresses and telephone numbers.
SYSTEM DESCRIPTION
The 400 Series headtops combine eye and respiratory protection and are designed to be used with an
approved air filter unit (AFU) or regulator (see Reference leaflet) to form a respiratory protection
device.
The air will be fed via a breathing tube from a belt mounted AFU or regulator to the back of the
headtop. The air flows over the top of the wearer’s head and down in front of the face. The visor and
face seal prevent the ingress of contaminated air.
APPROVALS
These products, when used as part of a 3M Approved System have been shown to meet the Basic
Safety Requirements under Article 10 and 11B of the European Directive 89/686/EEC and are thus
CE marked.
The products were examined at the design stage by: British Standards Institution, Product Services,
Maylands Avenue, Hemel Hempstead, Hertfordshire, HP2 4SQ, England (Notified Body number 0086).
LIMITATIONS OF USE
Use this respirator system strictly in accordance with all instructions:
• contained in this booklet,
• accompanying other components of the system (e.g. 3M 400 Series Reference leaflet, Air filter unit
or Regulator User Instructions)
Do not use in concentrations of contaminant above 20 times the Occupational Exposure Limit (OEL).
Do not use for respiratory protection against unknown atmospheric contaminants or when
concentrations of contaminants are unknown or immediately dangerous to life or health (IDLH), or in
atmospheres containing less than 19,5% oxygen (3M definition. Individual countries may apply their
own limits on oxygen deficiency. Please seek advice if in doubt).
Only use with the Air filter unit’s / Regulators and spares / accessories listed in the Reference leaflet
and within the usage conditions given in the Technical Specification.
Only for use by trained competent personnel.
Leave the contaminated area immediately if:
a) Any part of the system becomes damaged.
b) Airflow into the headtop decreases or stops.
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GB
IRL
