When we breathe we spend most of our time breathing out. When a cylinder is used with a continuous flow, most of the oxygen is wasted. A conserver cuts out that waste by providing a precise amount of oxygen at the point of breathing in.
A conserver should only be used with portable cylinders, and it could make the cylinder last up to three times longer, although this will vary depending on the user’s breathing rate and activity. Patients can only use this device if they use nasal cannula.
Connecting your conserver
- Put the cylinder into the portable carry bag provided
- Put the conserver into the pocket at the front of the bag
- Connect the female end of the coiled tubing to the outlet connector on the cylinder
- Secure the female end with the tube clamp
- Then connect the quick connect end of the coiled tube to the cylinder connection on the conserver
- Finally connect the cannula tubing to the cannula connection on the side of your conserver
Please note that conservers are not suitable for patients under seven years old.
Do not use whilst sleeping.
Do not shorten the tubing.
A mask cannot be used with a conserver.
Setting your oxygen supply
- Put the cannula on the patient
- Turn the flow rate wheel on the conserver to the flow rate that the healthcare professional has ordered
- Turn the oxygen cylinder onto a flow rate of 4 litres per minute (lpm)
- The patient should then begin breathing through the cannula
- It is very important to remember that the cylinder must be set to a flow rate of 4 lpm and the conserver set to the flow rate ordered
- You should also be aware that if the conserver does not seem to be working you must attach the tubing and cannula directly to the cylinder, but you must adjust the flow rate of the cylinder from 4 lpm to the flow rate ordered by the Healthcare Professional
Turning the supply off
- Slowly turn the On/Off valve on the cylinder clockwise to the off position
- The patient should continue to breathe through the nasal cannula until they feel no more oxygen coming through (this releases the pressure in the tubing)
- Take the cannula off
- Turn the flow rate wheel on the conserver to the off position
- If you use the cylinder without the conserver on another occasion, always remember to set it back to the prescribed flow rate
Checking your conserver’s battery
With normal use the conserver battery should last over four weeks. Always check the battery’s power level before using your conserver.
- Move the flow rate wheel at the top of the conserver to the ‘BAT’ position
- The battery level light will show how much power is left. This is shown by the following colours:
Green The battery is full
Amber The battery’s level has gone down, but there is no need to change it yet
Red The battery is running low – you should have a spare handy
Flashing red Replace the battery immediately
The battery level light only shows when the flow rate wheel is in the ‘BAT’ position. If the conserver battery runs low and needs to be changed, the red light will flash on any setting. In this case, oxygen will still be received, but it will not last as long.
The conserver will be provided with a battery, once this has depleted it is your responsibility to replace it.
Always carry a spare battery.
Changing your battery
The conserver needs a single 1.5 volt C-size alkaline battery. These are commonly available from most supermarkets.
To replace the battery first remove the battery cover, safely discard the current battery then insert the replacement into the
Once you have replaced the battery, check its power level.
Only use alkaline batteries with a conserver.
The use of rechargeable batteries is not recommended.