Maintenance; Storage And Transportation; Technical Specification - 3M 700 Serie Bedienungsanleitung

The 'in-use' life of the headtop will vary with frequency and conditions of use. In everyday use, particularly when
used outdoors, it is recommended that the headtop is discarded after 3 years service although some extreme
conditions may result in deterioration over a shorter period. For indoor or occasional use we would anticipate a
service life of approximately 5 years, provided the headtop is stored as stated below.
DOFFING
Do not remove the headtop or turn off the air supply until you have vacated the contaminated area.
1. Grasp the face seal, raise the visor, and lift the headtop off the head.
2. Switch off the air filter unit or disconnect the compressed air supply tube from the regulator.
3. Unbuckle the waistbelt.
NOTE:
If the respirator has been used in an area that has caused it to become contaminated with a substance
requiring special decontamination procedures it should be placed in a suitable container and sealed until it
can be decontaminated.
CLEANING INSTRUCTIONS
Use a clean cloth dampened with a mild solution of water and liquid household soap.
Do not use petrol, chlorinated degreasing fluids (such as trichloroethylene), organic solvents or abrasive cleaning
agents to clean any part of the equipment.
To disinfect use wipes as detailed in Reference leaflet.

MAINTENANCE

Maintenance, servicing and repair must only be carried out by properly trained personnel.
Use of unapproved parts or unauthorised modification could result in danger to life or health and can invalidate any
warranty.
WHAT
General Inspection
Cleaning
A maintenance record should be kept at the monthly checking stage to comply with Health and Safety Regulations.
This record should be kept for at least 5 years.
Visor replacement - See figs 2-7.
Face / Head seal replacement - See figs 8.
Head Harness / Comfort Band and Head Cradle replacement - See figs 9-12.
Temple seals replacement - See figs 13-16.
Welding shield replacement (HT-748 and HT-749) - See figs 17.
If disposal of parts is required this should be undertaken in accordance with local health and safety, and
environmental regulations.

STORAGE AND TRANSPORTATION

The equipment should be stored in the packaging provided in dry, clean conditions away from direct sunlight,
sources of high temperature, petrol and solvent vapours.
Do not store outside the temperature range - 20°C to +50°C or with humidity above 90%.
When stored as stated, the expected shelf life of the headtops is 5 years from date of manufacture.
The original packaging is suitable for transporting the product throughout the European Economic Community.

TECHNICAL SPECIFICATION

(Unless otherwise stated in the Reference leaflet)
Respiratory Protection
Nominal Protection Factor = 50.
Assigned Protection Factor = 20.
EN1835 LDH2 when connected to regulator.
prEN146 (rev) TH2 when connected to AFU.
Eye Protection
Visor surround - EN166:3:9:-B. (Liquid splash 3, molten metal 9 and medium energy impact –B).
Polycarbonate visor (060-75-00-P) – EN166:2:B:3 (Optical class 2, medium energy impact B and liquid splash 3).
WHEN
Before use
Monthly if not in regular use
After use
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Optional visors (Please see Reference leaflet).
Scratch resistant visor (060-75-01P) – EN166:2:F:3 (Optical class 2, low energy impact F and liquid splash 3).
Solar tinted visor (060-75-02P) – EN166:5-1.7:2:B:3 (Sun glare filter 5, shade number 1.7, optical class 2, medium
energy impact B and liquid splash 3).
Molten metal visor (060-75-04P) – EN166:2:B:3:9 (Optical class 2, medium energy impact B, liquid splash 3 and
molten metal 9).
Where the markings on the visor and visor surround are different, the lower classification should be taken.
Welding Protection (HT-748 and HT-749)
The HT-748 and HT-749 welding shields meet the requirements of BS1542 class 4.
HT-748 requires a welding filter to EN169, size 110mm by 90mm.
HT-749 requires a welding filter to EN169, size 108mm by 82mm (4 1/4" x 3 1/4").
Head protection
Impact and penetration requirements as defined by EN 397.
Flow Characteristics
Manufacturers Minimum Design Flow (MMDF) 150 l/min.
Maximum flow – See appropriate user instruction.
Head Size
One size, adjustable to fit 52cm to 64cm (UK sizes 6.5 – 8).
Operating Temperature
- 5°C to +40°C.
Weight
HT-701 = 715 g.
HT-702 = 715 g.
HT-705 = 715 g.
HT-748 = 990 g.
HT-749 = 990 g.
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