96Service Manual – SC401, SCRUBTEC 344 20 - Wheel System, Traction
Drive System Gear Motor Current Draw Test
WARNING: This procedure must be performed by qualied personnel only and with the help of an
assistant.
1. Drive the machine on a level oor.
2. Use a suitable chock to raise one side of the machine approximately 2cm from the oor and allow one
drive wheel to turn freely.
WARNING: Pay attention to the rotation of the driving wheel when performing the following steps.
3. Apply the amp clamp (A) on the positive cable (red) of the drive harness (B) near the Drive system gear
motor.
Figure 6:
A
B
4. Rotate the Speed adjuster at maximum speed.
5. Switch on the machine and activate the drive motor with at least one hand on the Operator’s presence
sensor.
6. Check that the current draw is included between 1,5 and 2,5A at 24V.
7. Release the Operator’s presence sensor.
8. Switch off the machine and remove the amperometric clamp.
9. 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, disassemble the motor (see “Drive system gearmotor” paragraph), and check the
condition of all its components.
10. If the above-mentioned procedures do not lead to a correct amperage, the gearmotor must be replaced.
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