024-001-750 MOD 8 11/05/07 Page 4 of 8 POWER UNITS
Centurion Safety Products Ltd. Howlett Way, Thetford, Norfolk, IP24 1HZ, UK
Tel. 0044 (0)1842 754266 Fax. 0044 (0)1842 765590
Main filters
Part number: M23P2/5 or M23P2OD/5 THP2 /TH2P filters – for use with Magnum 1000 and 2000 Power Unit
Part Number: M23P3/5 TH3P filter – For use with Magnum 2000 Power Unit only
WARNING
Care should be taken when handling filters.
Do not touch the pleated paper filter medium.
Do not use filters with damaged paper filter medium.
Do not use filters after their expiry date.
Do not use filters with no or damaged filter seal.
Filters should be fitted as follows. :
Remove the front cover by easing open the right hand side
.
Fit the filter squarely into the turbo unit.
Place pre-filter over filter (if used).
Close the cover over the filter, taking care that the cover does not touch the filter media.
Press down on the centre of the cover until it snaps closed.
MAGNUM 8500 Power unit M23/8500
Pre-filters (General)
The pre-filter is an optional item, which sits in front of the main filter and removes coarse dust before it reaches the main filter.
Pre-filters, in themselves, do not offer any respiratory protection and hence must only be used in conjunction with a main filter.
The pre-filter should be changed immediately a drop in airflow is noticed.
Frequent changing of the pre-filter will maximise the life of the main filter.
Pre-filter Part number: M23PF/20
(For use with M23P3SL/6 only)
Pre-filter replacement
Ensure that the main filter(s) are securely in place before commencing this operation.
Outside surfaces of both the power unit and the main filter(s) must be decontaminated before unscrewing the pre-filter retaining ring(s). Unscrew
the pre-filter retaining ring(s) and remove the contaminated pre-filter(s).
Replace the pre-filter(s) and re-fit the retaining ring(s).
Pre-filter Part number: M09PF
( for use with M09 Fitta filters only)
Pre-filter replacement
Ensure that the main filter(s) are securely in place before commencing this operation.
Outside surfaces of both the power unit and the main filter(s) must be de-contaminated before changing the pre-filter(s).
The louver forms a prefilter holder on each filter.
Lift the louver at the 2-pin catch, open it, and replace pre-filter in the recess on the top of the filter, ensuring that it lays flat.
Close the louver and secure it on the 2-pin catch ensuring that it is properly snapped shut.
If a pre-filter is
not
used the main filter should be changed immediately the clogged filter alarm sounds/indicates or the air flow indicator, indicates
reduced airflow.
If a pre-filter
is
used it should be changed immediately the clogged filter alarm indicates or the airflow indicator, indicates reduced airflow.
(This may be more frequently than if a pre-filter is not used).
If after changing the pre-filter the clogged filter alarm sounds/indicates reduced airflow or the airflow indicator indicates reduced airflow.
Within a short period of time, the main filter should be changed as detailed (
see Main filter
).
Main Particulate filters
(see diagram)
Part number: M23P3SL/6 (Particulate Filters for Magnum 8500 power units)
Filters fitting:
Ensure that the rubber seal in the filter port of the power unit is present, in good condition and seated flat at the bottom of the threaded section.
Ensure that there is no visible damage to the filter; discard any damaged filters.
Screw the filter squarely into the power unit port until it is hand tight. Do not over tighten as this may damage the filter seal and impair efficiency.
Filter removal
The outside surfaces of both the power unit and the main filter must be decontaminated before unscrewing the main filter(s).
The power unit should be positioned so that the contaminated filters are facing downward, in order that any trapped material released by
unscrewing the filter does not fall into the filter port.
WARNING
Care should be taken when handling filters.
Do not touch the pleated paper filter medium.
Do not use filters with damaged paper filter medium.
M23P3SL/6
Do not use filters after their expiry date.
FILTER
Fitta Combination Gas/Dust filters
(for Magnum 8500 power unit only)
The following filters are available which can be used with the Magnum 8500 Unit and the range of TH2 headpieces and the M23LHF.
To use the Fitta range of filters as detailed below a cartridge holder Part number M22FH is required for each filter.
NB
: 3 Combination Gas/Dust filters of the same type must be used.
If the centre Din 40 filter port is blanked off, the blank may be unscrewed with a coin.
Cartridge holder base Filter Retaining ring
Part number Description
M09A1P2 (s) Organic Gas/ Dust
M09B1P2 (s)* Inorganic Gas / Dust
M09E1P2 (s)* Acid Gas / Dust
M09K1P2 (s)* Ammonia Gas/ Dust
* Discontinued
Filter fitting
Unscrew the retaining ring from the cartridge holder base and insert the filter with the louver facing outwards.
Ensure that the rubber-sealing ring on the filter rests against the rim of the base.
