DUTCH 9D-58-A Инструкции по эксплуатации и техническому обслуживанию - Страница 8

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5.8 MAINTENANCE PROCEDURES

These procedures are the responsibility of maintenance operator or company authorized to conduct any revision.

CAUTION: according to the current regulations in the country where they are used fire extinguishers, some

maintenance procedures may not be applicable.

5.8.1 Details of maintenance procedures adopted in accordance with the regulations in force

Phase or element checked

Check the seal and the

safety pin

Check the pressure gauge

Inspect the exterior of the

extinguisher

Check the hose

Check the way to use the

extinguisher

Open a portable fire

extinguisher

To empty a portable fire

extinguisher

Verify proper operation

and the suitability of all

items

Check the seals

Examine the inside of the

cylinder

Check the expiration date

of the hydraulic test and

replace the portable fire

extinguisher

Check if the seal and the safety pin have been removed.

Check the suitability of the pressure gauge. If it does not work freely or if it

indicates a pressure outside tolerances, check the value of the pressure inside

the extinguisher with a control manometer pressure fitted with a grease fitting.

If the pressure is too low, set aside the fire extinguisher and check further in the

workshop to identify the cause.

Check for signs of corrosion, shock, scratches or deterioration that could

prevent the proper operation of the extinguisher.

Check the suitability of the hose and make sure it is level, or obstructed,

fissured, worn or damaged. Blow if necessary with compressed air. Replace if

necessary.

Verify the accuracy and readability of the mode of use indicated on the label of

the extinguisher.

Extinguishers permanent pressure must be opened only in case of partial use,

loss of pressure or weight control and possible replacement of the extinguishing

agent.

Open the portable fire extinguisher conforming to the safety precautions

described in paragraph 5.3.2, to remove the valve from the cylinder.

Pour the initial charge into a clean container and check whether the charge can

be reused. If there is debris, replace it. Check the filter status of the float. If it is

defective, replace the float.

Clean if necessary and pass air through the other parts, paying particular

attention to the valve orifice. Verify that the safety valve (if there is) and other

parts are not blocked. Replace defective parts.

N.B. when the pressure gauge is defective, replace the valve.

Verify that the organ functioning and discharge control operate freely. Clean,

perform the repair or replacement of defective parts if necessary. Protect

moving parts and threads against corrosion with a silicone-based lubricant

grease.

Replace the seals. Lubricate the new seals with silicone grease before

installation.

Check the inside of the cylinder with a light. Verify the absence of corrosion and

/ or deterioration of inner liner.

Check whether the hydraulic test came to an end. In this case, run the test in

accordance with the procedures of paragraph 5.8.3, before refilling the

extinguisher with the extinguishing agent (water and additives) or previously

checked with the new extinguishing agent. Replace the valve cleaned and

checked with the float and the new seals lubricated on the cylinder, taking care

to position them.Screw the valve with a force torque as indicated in the

following note. Pressurize the extinguisher with nitrogen at 15 bar (± 1 bar at

20° C). Insert the safety pin and lock it with the new security seal. Check the seal

of the valve with a spray leak detection. Screw the hose with the tightening

torque 15-20 Nm.

8/11

02/03/16 - AC - Rev.1

Istructions