4-14
MACHINE OPERATION
SY60C Excavator OMM
11. Allow the engine to idle until the hydraulic oil reaches
a temperature of 140°F (60°C) before using the
machine. Once the hydraulic oil reaches 140°F
(60°C) complete the warm-up operation. See
“Warm-up Operation” on page 4-14.
12. When the temperature is below 32°F (0°C) and mud
is built up on the tracks, swing the upper structure
90° and raise the machine so that one track is off the
ground. Rotate the track forward and backward to
remove the mud from the sprocket, track rollers, and
idlers.
Warm-up Operation
WARNING
• In case of emergency, irregular engine operation,
or other faults, turn the key switch to OFF to stop
the engine.
• Do not operate the machine immediately after
starting the engine. Insufficient warm-up of the
machine and hydraulic system may cause slow
response or abrupt movement during operation,
resulting in serious accidents. Warm-up is
especially necessary in cold areas.
• Operating the machine before the hydraulic oil is
warmed to operating temperature may cause
slow control response or abrupt movement
during operation.
Failure to follow these warnings could result in death
or serious injury.
Check the following items:
1.
Deactivate the auto idle mode after starting the
engine, and adjust the throttle so that the engine runs
unloaded at 1400 rpm for 5 minutes.
2.
Adjust the throttle so the engine runs at 1500 rpm,
then slowly operate the bucket for 5 minutes.
3.
Adjust the throttle so the engine runs at a high rpm,
then operate the boom, arm, and bucket for 5 to 10
minutes.
Repeat all movements several times and stop the
warm-up process. Check the monitor for normal
operating readings after the warm-up process.
New Machine Break-In
NOTE:
The machine has been thoroughly tested and
adjusted before shipment. However, initial
operation of the machine under severe conditions
can adversely affect the performance of the new
machine or shorten the machine life. SANY
recommends a break-in period of 100 service
hours for a new machine. Properly breaking-in a
new machine is crucial for long service life by
allowing time for internal engine parts to break-in.
Make sure the machine is in normal working
condition before proceeding with the break-in.
1.
Start the engine and run at low idle until it reaches
proper operating temperatures. Do not move the
controls.
2.
Avoid operating the machine under heavy loads or at
high speeds during the break-in period. Operate as
much as possible in the 1/2 to 3/4 throttle or load
range. Do not operate this machine with a full load
during the break-in period.
3.
Avoid sudden starts, movements, or stops.
4.
Monitor the instruments frequently – especially the
engine oil pressure and engine coolant temperature.
Shut down the machine at the first indication of an
abnormal reading.
5.
Avoid operating the engine at low idle for long
periods of time.
6.
Manage engine power to allow acceleration to
governed speed when conditions require more
power. Do not over-rev the engine.
7.
Always allow the engine to cool before shutting it
down
8.
After shutting down the engine, check the fluid levels.
Engine Shutdown
NOTICE!
• Stopping the engine before it cools can
accelerate engine component wear. Never
abruptly shut down the engine, except in an
emergency.
• Never stop the engine suddenly when it is
overheated. Run the engine at low idle to allow it
to cool down gradually before shutting it down.
Failure to follow these notices could result in
damage to the machine or cause the machine to
operate improperly.
1.
Park the machine on a firm, level surface.
2.
Lower the bucket or optional equipment to the
ground.