tennat NOBLES S6, Техническое и сервисное руководство

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PLDC04348
REVISION 00
November 09, 2020
TECHNICAL OFFICE
November 06, 2020
54
of
58
E1.1.4 Brushes are not lowered
1
Check the integrity of fuse F5 (2.5 A - F) on the
actuator wiring.
A
Replace the fuse if burnt out.
B
If fuse is working, go to point 2.
2
Disconnect actuator and connect directly to battery
to verify operation. For connection of the actuator,
read indications on page 24.
A
Replace the actuator if not working.
Test both at the output and at the input (rod).
B
If actuator is working, go to point 3
3
At this juncture, verify current draw so as to exclude
mechanical problems.
A
If current draw is high, clean, lubricate or replace the
actuator.
B
If current draw is correct, go to point 4.
4
Check integrity of the machine wiring.
A
If machine wiring is faulty, effect the necessary
repair.
B
If machine wiring is intact, go to point 5.
5
Connect the actuator of the machine and proceed
with test of current draw.
A
If actuator does not work and there is no current
draw, replace the power circuit board.
B
If there is current draw but actuator responds with
difficulty, replace actuator.
1
Check that brush rotates and rotates in the proper
direction: counter to the direction of motion.
A
If brush rotates correctly, go to point 2.
B
If brush rotates but in the wrong direction, invert the
wires at the connector (only if brush motor has been
replaced).
C
Only if centre brush does not rotate but side brush
does rotate, go to point 5.
D
If neither centre brush nor side brush rotates, go to
point 8.
2
Check whether or not brushes are lowered when
expected.
A
If no, see heading F1.1.4.
B
If yes, go to point 3.
3
Check extent of wear on centre brush.
A
Replace brush if worn excessively.
B
If not worn, go to point 4.
4
Check integrity and wear of front flap.
A
Replace flap if degraded or worn.
B
If centre brush is replaced, replace front flap as well
even if in acceptable condition
5
Check integrity of drive belt.
A
Replace belt if degraded.
B
If belt is intact, go to step 6.
6
Check continuity of wiring between connector and
motor.
A
Restore continuity of wiring if broken.
B
If wiring is intact, go to point 7.
7
Check integrity of carbon brushes;
see heading A1.4.
A
Replace carbon brushes if worn.
B
If carbon brushes are in good condition, replace the
motor.
8
Connect centre and side brush motors directly to
battery to verify rotation.
A
If motors turn, go to step 9.
B
If neither motor turns, replace both.
9
Check integrity of wiring.
A
If wiring is damaged, repair or replace as necessary.
B
If wiring is intact, replace the power circuit board.
E1.1.3 Machine leaves the floor dirty