WINDSHIELDS WIPER SYSTEM – PRINCIPLE OF
OPERATIONS
The Windshield Wiper system mode of operation is selected via a threeposition
rotary switch OFF / LOW SPEED / HIGH SPEED and a two-position
rotary switch DUAL / SINGLE located on the WIPER control panel.
The wiper operation (start/stop) is controlled via the WIPER button switch on
each cyclic stick.
Whenever the wipers are turned off they automatically reach the park
position.
The Pilot wiper motor converter is supplied by MAIN 2 bus via the WIPER
PLT circuit breaker.
The Copilot wiper motor converter is supplied by NON ESS 1 bus via the
WIPER CPLT circuit breaker.
The windshield washer system operation is controlled via a push button
switch located on the WIPER control panel.
The system is able to supply a cleaning liquid to both wiper blades and
includes a low level sensor to detect a minimum liquid quantity which
triggers a maintenance event in the Central Maintenance Computer (CMC):
the white MAINTENANCE message will be displayed automatically in the
CAS.