CITROËN C3 Handbook page 226

In the event of a breakdown
F Place the switch in the "O" position.
F Remove the kit.
F Drive immediately for approximately
three miles (five kilometres), at reduced
speed (between 15 and 35 mph (20 and
60 km/h)), to plug the puncture.
F Stop to check the repair and the tyre
pressure using the kit.
224
Checking / adjusting tyre pressures
You can also use the compressor, without
injecting sealant, to check and if necessary
adjust the tyre pressures
F Remove the valve cap from the tyre and
place it in a clean area.
F Uncoil the pipe stowed under the
compressor.
F Screw the pipe onto the valve and tighten
firmly.
F Check that the compressor switch is at the
"O" position.
F Uncoil fully the electric cable, stowed under
the compressor.
F Connect the compressor's plug to the
vehicle's 12 V socket.
F Switch on the ignition.