Things to follow before carrying out maintenance,

• Inform the bridge before going inside the CO2 room.
• Start ventilation blowers first and the room should be ventilated for some time.
• Go with a person with proper communication equipment.

Weekly

• Check all cylinders are properly secured.
• Make sure that nothing has been placed to interfere with the normal operation of the system
• Check all the operating levers and their accessories are properly tight.
• Check clamping.
• Check valve actuator.

Once every month

• All the weekly checks
• Inspect for piping and equipment for mechanical breakage
• Operate the valve several times and make sure that it does not stick
• Open the cabinet door and check the alarm and ventilation cut off working.

Once In Every Year

• All the monthly checks
• Cylinder should be weighed to determine the CO2 content
• If the net weight is decreased by 10% of the actual weight, the cylinder should be recharged

Once In Every Two Years

• All the checks in yearly
• Blow through all piping with service air @ 25 bar pressure or Co2 to make sure that the line is not blocked

Once In Every Five Year

• All the above
• Spring loaded relief valve pressure test @ 180 bar.

10 Yearly

• Cylinder pressure test @ 250 bar (after the first 10 years, the cylinder is to be pressure tested every 5 years)

15 yearly

• Pressure testing of the line by a suitable liquid
• Cylinder to master valve: @ 170 bar
• Master valve to E/R or Cargo hold valve: @ 80 bar
• E/R or Cargo hold to nozzle: @ 6-7 bar