8
InstructionManual
YZ-S4
PartV precautions
（1）
It is forbidden to operate the sweeper by non
professionals
（2）
It is strictly forbidden to clean the silk and
ribbon articles
（3）
Deep discharge is strictly prohibited
（4）
It is strictly forbidden to park on the slope
（5）
Firmly cut off the power supply
（6）
Do not use the sweeper in rainy days
（7）
It is strictly forbidden to use the power
shortage. If the voltage is lower than 31.5v,
please charge it in time
Part VI common phenomena and treatment methods
1. The brake doesn't workwell
Adjustthe nutsofthe steelwireropeinsidethereartiresonbothsidesclockwiseuntil
the braking effect of both sides is the same.
2. No way.
The related components include controller (inside and left side of distribution box),
fuse (the second one from top to bottom), two-way contactor (under fuse), accelerator
(where right foot is trampled), driving wheel (front wheel), battery, corresponding
wiring segment, connector and clue. Any one of the components damaged or poor
contact willcause nowalking,and itcanberecoveredbyreplacingthe damagedparts.
3. No cleaning
As for the main components of sweeping, there are 2 side brush motors, 1 main brush
motor, 1 fan, 1 100A contactor (in the middle of the right side of the distribution
box), travel switch (located on the right side of the car body, inside the main brush
connecting plate, fixed on the right side board), main and side brush push rods, wire
rope, control switch button, etc. If the travel switch is damaged or the adjustment is not
in place, the main brush push rod is damaged, the wire rope is broken, and the control
switch button is burnt out, itwill not be cleaned. Side brush motor, main brush motor
and fan motor are controlled by 100A contactor. If any one of them does not work, it is
motor fault. If they don't work, the reasons are as follows
