CITROEN XSARA Technical Training Manual page 179

C - AIR CONDITIONING PRESSURE SAFETY DEVICE
The BSI cuts off the compressor in the event of:
• high pressure (risk of damaging the circuit),
• low pressure (probability of a leak).
Detection is performed by a 4 level pressure switch.
To prevent the compressor from being successively engaged, waiting times
are set:
COMPRESSOR CUT-OFF
rd
3 and subsequent cut-offs
The timer is reset when the engine running information disappears.
D - ENGINE SPEED SAFETY DEVICE
To ensure the compressor is sufficiently protected at high engine speeds, a
request to cut off the compressor is made if the engine speed is above 6250
rpm.
The compressor is authorised to re-engage if the engine speed falls below
5650 rpm. A cut-off time of at least 5 seconds is used.
MULTIPLEXED BSI - XSARA PICASSO AND XSARA – PART 8
© AUTOMOBILES CITROËN Toute reproduction ou traduction même partielle sans l'autorisation écrite d'AUTOMOBILES CITROËN est interdite et constitue une contrefaçon
161
st
1 cut-off
nd
2 cut-off
WAITING TIME
1 minute
4 minutes
16 minutes
Chapter 2