Britannia BAS2 Handbuch

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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is corrosion or the markings are not legible, then the extinguisher should be withdrawn from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.

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