Embraer EMB145, Operation Manual

Page: 2150 / 2662

ICE AND RAIN
PROTECTION
AIRPLANE
OPERATIONS
MANUAL
2-15-15
Page
2
Code
01 REVISION 41
Copyright © by Embraer. Refer to cover page for details.
A
O
M-145/1114
WINDSHIELD WIPER SYSTEM (IF
APPLICABLE)
NOTE: For airplanes Pre-Mod. SB 145-30-0055 and Post-Mod.
SB 145-30-0054 (or with an equivalent modification factory
incorporated), the Rain Repellent Coating replace the
Windshield Wipers. Approved Rain Repellent Coatings are
listed in AMM chapter 30-41-04.
A two-speed windshield wiper is provided for the left and right
windshields. Each system comprises a motor-converter, a wiper arm,
and blades. A control box provides speed control, synchronization, and
off-screen park functions for both systems through independent
channels.
Each system has its own independent power supply and a four-position
knob on the overhead panel.
WINDSHIELD WIPER CONTROL PANEL (IF
APPLICABLE)
1 - WINDSHIELD WIPER SELECTOR KNOB
TIMER - Provides intermittent operation of the associated
windshield wiper in single cycles (two strokes) with an 8
second time interval between two cycles, in high speed.
OFF - Associated wiper blades travel to the windshield inboard
position, parking out of pilots vision.
LOW - Associated wiper operates at approximately
80

10 strokes per minute.
HIGH - Associated wiper operates at approximately
140

14 strokes per minute.
NOTE: Dry windshield operation leads the motor-converter to a stall
condition, due to the high friction level. The controller senses
the motor-converter current surge and drives the arm directly
to the parked position. The system remains inoperative until
the Windshield Wiper Selector Knob is set to OFF position and
a new operation mode is selected.