Fimap 109070, Service Manual

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Functionality Check - 56 Disc Brush Deck
Conventions:
ˆ
+ V
b
: Positive voltage of the battery.
ˆ
−
V
b
: Negative voltage of the battery.
ˆ
The emergency button is not pressed, the key contact is closed and the charger is not connected to the
mains.
ˆ
The Brush Deck is in working condition .
Input/output:
Satisfied condition Pin V at work V at rest
Brush Motor Activated XE(1) ref to XE(2) + V
b
− V
b
Display Negative J1(4) ref to B-
−
V
b
−
V
b
Display Transmission J1(7) ref to B- + V
b
−
V
b
Display Receiving J1(3) ref to B- + V
b
−
V
b
Display Positive J1(8) ref to B- + V
b
+ V
b
Electrobrake Activated J2(1) ref to J2(2) + V
b
−
V
b
Traction pedal pressed J5(3) ref to J5(6) + V
b
−
V
b
Operator Seated J7(15) ref to J7(1) + V
b
−
V
b
Brushes Actuator in motion J14(1) ref to J14(4) + V
b
− V
b
J1 J2
J5 J7
J14
4.6.2 Relative electrical Components
Brush Gearmotor
The brush gear motor is a DC type with permanent magnets, connected directly to the function board via a
connector.
With a constant 24 V DC supply (full battery) the single brush motor (M2) draws 2.6 Amps
±
0.1. With a
constant 21 V DC supply (low battery) the absorption is 2.4 Amps
±
0.1.
Actuator
The brush deck lifting actuator, by means of the lever and the tie rod, lowers and pushes the brushes to the
ground, according to the preset pressure.
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