Britannia BAS2 Manual

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BRITANNIA
RANGE
EXTINGUISHER
SERVICING &
MAINTENANCE
INSTRUCTIONS
Stored Pressure
Powder extinguishers

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SPINTRO REV 5: September 2010
PROCEDURES FOR SERVICING THE BRITANNIA RANGE OF
HAND PORTABLE FIRE EXTINGUISHERS
Introduction
The commissioning and servicing of fire fighting equipment must be carried out by a competent
person using the correct tools to follow these manufacturer’s instructions and any National
standards required in the relevant Country.
This maintenance should be performed at least annually. The extinguishers should be visually
inspected at least quarterly, but preferably monthly, by the user, to ensure that the equipment
is in its designated position, has not been used and has not been tampered with.
Servicing and recharging should be carried out in a clean dry environment. All recharge
materials and spare parts must be as specified by the manufacturer. Particular attention is
drawn to replacement CO2 cartridges, which must be obtained from the Manufacturer. Minor
differences in cartridge design may affect the correct operation of the extinguisher.
In the event that an extinguisher cannot immediately be rendered suitable for continued
service, it must be marked ‘NOT MAINTAINED’ until it can be repaired/recharged.
The competent person must advise the user of any equipment, which is either condemned or
unfit for service and make any recommendations for replacement and/or remedial work.
Always check the security and suitability of the hanging bracket, and that the extinguisher is of
the right type for the prevalent risk.
If the extinguisher is to be sited in a hazardous/corrosive environment i.e. marine use, the
inspection periods should be more frequent. The effects of the environment should be
considered, with particular reference to corrosion and legibility of marking instructions. If there
is corrosion or the markings are not legible, then the extinguisher should be withdrawn from
service. This is a requirement of the Marine Equipment Directive.
It is essential that extinguishers are not subjected to temperatures outside of the temperature
range stated on the extinguisher.
Extinguishers should remain in their allocated location, and should be used only for the
purposes of extinguishing a fire. On no account should the extinguisher be removed for any
other purpose, and should not be subjected to any impact, force, heat, abrasion or any other
misuse or condition that may be detrimental to the integrity of the extinguisher.
Failure to use the recommended spare parts and adhere to these maintenance instructions may
cause the extinguisher to malfunction or prevent it from operating altogether. This may
invalidate the warranty and the manufacturer accepts no liability in the event that these
instructions are not followed.
Care must be taken to ensure that residual media (powder and foam) are disposed of in
accordance with environmental legislation. Where facilities exist, condemned extinguishers and
components should be recycled.

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SPSPP REV 2: September 2010
SERVICING PROCEDURES FOR BRITANNIA RANGE
STORED PRESSURE POWDER MODELS
MODEL NO'S: BAS2, BAS4, BAS6, BAS9, BMS9
1. Remove extinguisher from hanging bracket and check security of the bracket, rectify if
necessary. Check exterior of extinguisher for corrosion or damage, if found, withdraw from
service.
2. Ensure safety pin is in position and the extinguisher has not been completely or partially
discharged. If the extinguisher has been completely or partially discharged, discontinue
servicing procedure and commence recharge procedure (Ref. RPSPP).
3. Ensure instruction label is legible, rectify as necessary. Check for damage/corrosion to
extinguisher body. If damage/corrosion is found, mark the extinguisher as condemned
and/or remove from service.
4. Checkweigh the extinguisher against the gross weight recorded when first installed. If
underweight by more than 10% of contents, the extinguisher should be removed from
service and recharged. Invert extinguisher to loosen powder.
5. Check safety pin for free movement. Refit pin and fit new seal and service indicator (in
accordance with service colour code).
6. Check pressure gauge is reading 12 bar (@+20ºc) in the green zone. Check that gauge is
operational by using gauge test kit, ensure that after testing, the needle returns to the
original mark. Fit new gauge sticker. If a deviation of more than 10% is recorded, remove
extinguisher from service and recharge.
7. Check discharge hose, nozzle and clips for wear, cuts or abrasion, where fitted. Replace as
necessary.
8. Fill in details of service, including extinguisher weight, on service label using indelible pen.
Clean extinguisher and return to service.

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RPSPP REV 2: September 2010
RECHARGING PROCEDURE FOR BRITANNIA RANGE STORED PRESSURE DRY POWDER MODELS
MODEL NO'S: BAS2, BAS4, BAS6, BAS9, BMS9
THESE RECHARGE PROCEDURES SHOULD BE USED IF COMPLETE OR PARTIAL USE OF THE
EXTINGUISHER IS SUSPECTED
1. Check for signs of damage or corrosion to extinguisher. If found, do not continue recharge
procedure, mark extinguisher 'condemned' and inform user. Ensure instruction label is
legible, rectify if necessary.
2. Ensure pressure is relieved by inverting extinguisher and squeezing the levers together
slowly (whilst pointing nozzle down and away).
3. Loosen headcap, using nutring spanner [Part Ref: HCS]. (Do not use hammer or other blunt
implement). Remove headcap slowly, allowing residual pressure to escape through vent
holes.
4. Empty residual powder from extinguisher body.
5. Inspect the extinguisher inside, checking for caked powder or corrosion, indicating moisture
inside the cylinder, rectify or replace extinguisher if found.
6. Recharge the extinguisher body with new dry powder, ensuring correct quantity and type.
Never mix different types of powder as pressure and moisture may develop as a result of
a chemical reaction.
7. Remove syphon tube, spindle holder/plug, spring and spindle. Thoroughly clean any residual
powder from both chambers using a soft brush or valve tool. Remove 'O' rings from spindle,
clean 'O' ring grooves and lubricate lightly using silicon gel. Fit new 'O' rings ensuring they
are centralised.
8. Refit spindle, spring and spindle housing to headcap. Refit syphon tube. Fit new headcap
'O' ring.
9. Clean cylinder neck threads and 'O' ring seat. Refit headcap, tighten using headcap spanner.
Refit safety pin, seal and service indicator (in accordance with service colour code).
10. Pressurise through schrader valve connection to 12 bar (@+20ºc) using compressed dry air
or Nitrogen.
11. Check for leakage. Record recharging details, including new weight on service label.