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Service Manual – SC500
20 - Wheel System, Traction
Drive System Gear Motor Current Draw Test
WARNING:
This procedure must be performed by qualified personnel only and with the help of an
assistant.
1
Drive the machine on a level floor.
2
Use a suitable chock to raise one side of the machine approximately 2cm from the floor and allow one
drive wheel to turn freely
3 Lift the recovery tank
WARNING: Pay attention to the rotation of the driving wheel when performing the following steps.
4 Apply the amp clamp on the positive cable (red) of the battery wiring harness
5 Turn on the machine and activate forward drive at maximum speed via the paddle, checking that the
current draw falls within the following values:
– Between 3 and 7A at 24V for AMER gear motor
– Between 4 and 8A at 24V for TEKNO gear motor
6 Release the paddle
7 Switch off the machine and remove the amperometric clamp
8 If the amperage is higher, perform the following procedures to detect and correct the abnormal
amperage:
◦
Check if there is dust or debris preventing the wheel rotation
◦
If necessary, check the motor carbon brushes
◦
If necessary, disassembly the Drive motor, and check the condition of all its components
9 If the above-mentioned procedures do not lead to a correct amperage, the gearmotor must be replaced
