Probable cause

Decreased awareness of flow.

Solution

Place cannula prongs in clear glass of water. If you see bubbles coming from the cannula, your unit is working correctly.

Probable cause

Loose connection.

Solution

Check each connection from the unit to the cannula to ensure a tight fit.

Probable cause

Flow control is not pointing directly to setting.

Solution

Adjust flow control to point directly to the appropriate setting.

Probable cause

LOX portable unit is empty.

Solution

Fill from LOX dewar.

Probable cause

Dirty or faulty cannula.

Solution

Replace cannula.

Probable cause

The LOX unit has been overfilled.

Solution

Lay the LOX portable unit on its back and wait for about one hour for unit to defrost.

Probable cause

LOX units are frozen together.

Solution

Wait 15 to 30 minutes for connections to thaw.

Probable cause

Not fully filled. Fill valve stuck open.

Solution

Check you are following fill instructions correctly.

Probable cause

This is normal – the LOX dewar is venting oxygen.

Solution

Immediately reconnect portable to LOX dewar while being careful not to come into contact with the vapour. Wait 15 to 30 minutes for ice to thaw. Remove portable.

Solution

This should remedy itself after a few minutes. If it continues please call us.