023-001-058 REV C Fresh Air Supply System Instructions Page 3 of 41
M08SC3VCS
Replacement visor and clamp set.
M08SC3S
Spectacle frames (no lens)
M08SC3VC/10
Visor protective covers (pk10)
M08SC3B
Protective storage bag
Alternate full-face masks for powered systems (systems with mini turbine).
Fresh air system incorporating mini turbine with maximum delivery hose length of 40 meters has been tested and approved for
use with MSA 3S types of full-face masks product codes D2055000 and D2055718 with minimum designed airflow of 120l/min.
Please read MSA mask user manual for classification of the mask, markings, maintenance, and fitting instructions.
Warnings
Facial hair or spectacles with side arms that pass underneath the face seal will affect the sealing of the face mask. This is likely to
cause leakage and seriously impair the performance of the system. Contact Centurion Martindale for information on suitable
spectacles that can be used on the system.
Both the Unpowered and Turbine powered systems provide the wearer with air from a source remote from the immediately
contaminated area. The quality of the supplied air is dependent upon the quality of the air at this source. The user must ensure
the purity of the air supply at all times. At very high work rates the pressure in the mask may become negative at peak
inhalation.
The Unpowered System (M26/400 and M26/450) can be used in a potentially flammable atmosphere.
The Powered System (M26/500, M26/500/EURO) may also be used in a potentially flammable atmosphere provided the Mini
Turbine Unit itself is not sited within or close to this flammable atmosphere.
The Mini-Turbine is
NOT
intrinsically safe.
Fitting Instructions
REINFORCED HOSE
Joining Hoses
It is possible to join two reinforced hoses together if required using an M26A adaptor providing the limitations below are
followed:
•
Only the approved Martindale M26A adaptor must be used. It should be checked for damage before use.
•
You should join a maximum of two hoses together. (I.e. Only one M26A may be used pe
r user’s system).
•
The maximum total length of joined hose assembly is 20 metres for unpowered and 40 metres for powered systems.
•
Check that the O-rings are in place on the nipples on the hose before attaching the adaptor. The adaptor must be tightly
screwed into the ends of the hose to be joined so that nuts on the end of the hose are tight and it should not be possible for
the hoses to rotate.
Unpowered Apparatus (M26/400 and M26/450)
Firstly, fit the strainer to one end of the reinforced hose by screwing it in tightly by hand. Then stake, hook or tie the strainer in a
location/position where the air is of breathable quality (and will remain so through the intended period of use of the apparatus).
See diagram 1. Breathing quality air is defined in EN 132
Ensure that the hose is free from bends or kinks which could impede air flow and that it is located/identified to
secure/protect it from being crushed by motorised vehicles.
Powered Apparatus (M26/500, M26/500/EURO)
Position the turbine in a dry area where the air is of breathable quality (and will remain so through the intended period of use of
the apparatus). Breathing quality air is defined in EN 132. Connect the power supply to the turbine and remove the blanking cap
from one of the turbine outlets. Ensure that the power supplied to the turbine is within the range printed on the turbine.
Turn on the power and switch the turbine on. Check that the turbine is operating and that air is
being blown from the outlet on the turbine. Connect one end of the reinforced hose to the
outlet by screwing on tightly by hand; it should not be possible for the hose to rotate once the
nut is tightened. (For twin users repeat previous steps using second outlet for the second
user). Note: if there is only one user the holed blanking cap MUST be fitted to the other outlet.
If the unit fails to start the Mains Voltage may be low - turn the turbine off, turn the air control
to maximum and turn the unit on again, allow unit to warm up for 5 minutes. Adjust airflow to
required lev
el. If the unit still fails to start refer to “Electrical Safety” section on Page 3.
Ensure that the turbine/hose is free from bends or kinks which could impede air flow and
that it is located/identified to secure/protect it from being crushed by motorised vehicles.
All Apparatus
Remove any protective caps from the belt bracket.
Connect the free end of the reinforced hose to the fine thread connector of the belt bracket by screwing the nut onto the belt
bracket connector tightly by
HAND
; it should not be possible for the hose to rotate once the nut is tightened. Connect the Y
