tennat NOBLES S6, Техническое и сервисное руководство

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PLDC04348
REVISION 00
November 09, 2020
TECHNICAL OFFICE
November 30, 2020
17
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58
A2.1 Checking the power draw of the side brush motor
1
Undo the fixing screws of the top cover, and remove the cover.
2
Make sure that the batteries on the machine are charged (24 V ± 1 V).
3
Use a clamp-on ammeter with a full scale reading of at least 200 A (amperes).
4
Move the machine onto a flat and smooth floor to ensure a correct current reading.
5
Pick out the Red wire of the side brush motor and apply the clamp-on ammeter to it.
6
Run the brush at speed 2, selected by way of the control panel.
7
Take note of the reading on the ammeter display and compare it with the values in the table.
8
If the value falls within the range indicated in the table, disconnect the instrument and reinstate the top cover of
the machine.
9
Conversely, if the value is at variance with those indicated in the table, proceed to make the following checks.
10
Disassemble the side brush and check that the current draw under no-load conditions is within the values in
table.
10a
Should the reading indicate a value different to those in the table (typically higher), check for wear on the carbon
brushes of the motor, and that there is no abnormal noise coming from gear unit.
10b
If the reading is within the range of values indicated in the table, check that the brush is not rubbing on the sides.
10c
Replace the brush motor with a new one.
Carry out the test with the machine at standstill to ensure the brush is not rotated 'against' the
drive, as this could result in a higher current draw reading.
G
5
6
Current draw A (amperes) Min Max
No load (without brushes)
0.8 A 1.2 A
Load applied (brushes operating)
1 A 1.5 A
Uncouple the centre brush to ensure a more accurate reading.
G