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SPCOL
REV 3: September 2010
SERVICING PROCEDURE FOR BRITANNIA FIRE EXTINGUISHERS
CARTRIDGE OPERATED LIQUID MODELS
MODEL NO'S: BW6, BW9, BT6, BT9, BAF9, BAQ6, BAQ9, BTU3, BTU6
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. RPCOL).
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.
Weigh extinguisher and compare mass to that recorded when the extinguisher was
commissioned or last discharge tested. Recharge the extinguisher if there is a difference of
more than 10% of the content weight.
5.
Ensure your body/head is not directly over extinguisher. Remove the headcap using the
nutring spanner [Part Ref: HCS] (warning: should pressure issue from vents, allow pressure
to escape before complete removal of headcap). Do not use blunt instrument, i.e. screw
driver etc.
6.
Check liquid level ensuring level is below the hanging bracket. Add or remove liquid to
correct level if necessary.
7.
Inspect the interior of the extinguisher for evidence of lifting or cracking of the polythene
lining, or corrosion. If found, mark as condemned and remove from service.
8.
Unscrew CO
2
Cartridge from headcap, clean and check for damage lifting of plastic coating,
corrosion and age of cartridge (must be changed if older than 10 years from date of
manufacture), replace if necessary with new cartridge from manufacturer.
9.
Checkweigh cartridge against marked weight. Replace if loss of contents is in excess of 10%.
10.
Wipe headcap valve clean, check for damage. Remove safety pin and squeeze levers
ensuring free movement of the firing pin/spindle. Check for blockages and valve shut off by
blowing through hose whilst opening and closing valve. Ensure nutring vents are clear.
