SANY SY155U, Руководство по эксплуатации и обслуживанию, Страница: 146 / 192

5-36
MAINTENANCE
SY155U Excavator OMM
Electrical System
Disconnect the Electrical Power
WARNING
When working with any open electrical power
source, make sure that your hands are free of any
metal objects (rings, watches, jewelry, etc.) that
could come in contact with electrical power
points. Failure to avoid this hazardous situation
could result in death or serious injury.
1. Prepare the machine for checks and inspections.
See “Maintenance Safety” on page 2-5.
2. Open the appropriate access covers or compartment
doors. See “Doors, Panels, Covers, and Filler Cap”
on page 4-5.
0003597
Figure 5-67
3. Turn the battery disconnect switch (1) to OFF. See
“Battery Disconnect Switch” on page 3-15.
4. Remove the two fasteners and washers (2) that
secure the cover (3) over the batteries.
0003596
Figure 5-68
5. Remove the black (ground) cable (4) from the battery
posts first, then remove the red (positive) cable (5)
from the battery post.
6. To reconnect power, reverse the process as
described in step 4, connecting the red cable first,
followed by the black cable.
7. Install and secure the battery cover.
8. Turn the battery disconnect switch to ON. See
“Battery Disconnect Switch” on page 3-15.
Check the Electrical System
The electrical system should be inspected, starting with
the fuse box. The fuse box is located on the left, behind
the operator’s seat.
NOTE: See “Fuse Location” on page 3-22 for fuse
location and other data.
If a fuse is corroded, or if a white powder can be seen on
it, contact a SANY dealer for repair information regarding
the electrical system.
Inspect all electrical equipment. If necessary, remove and
replace items, including loose connectors, worn or
degraded wiring, cables, etc:
• Locate and correct the cause of any electrical faults.
• Use only genuine SANY parts and fuses.
• Shut down the engine immediately if a fault occurs
with the power supply.
• Do not modify the electrical system without prior
authorization from SANY.
Check the Batteries
WARNING
Before proceeding with any battery maintenance
procedure, observe the following:
• The top of the battery must be kept clean to
prevent plugging of the battery vents. Regularly
wash the top of the battery to prevent the battery
vents from plugging.
• Battery gases are explosive. Never smoke
around batteries or expose them to sparks or
open flames. Work in a well-ventilated area.
• Wear personal protective equipment (PPE) when
working with batteries.
• Battery acid can cause burns or injury. If battery
acid makes contact with your skin or eyes, flush
the area immediately with fresh water and seek
medical attention.
Failure to follow these warnings could result in
death or serious injury.
1. Prepare the machine for checks and inspections.
See “Maintenance Safety” on page 2-5.
2
3
1
4
5