SY135C Excavator
Machine Operation
SANY
Operation and Maintenance Manual — 0120
4-17
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INTRODUCTION
SAFE
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MACHIN
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CONTROLS
MACHINE
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INTENANCE
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EQUI
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Warm-up Operation
1. Start the engine. See “Engine Starting Procedures” on page 4-12.
2. Adjust the throttle to run the engine unloaded at 1400 rpm for 5 minutes.
3. Place the hydraulic lockout control lever in the
unlocked (open) position (1).
4. Adjust the throttle to run the engine at 1600 rpm, then
slowly operate the bucket for 5 minutes. See “Work
Equipment Control and Operation” on page 4-25.
5. Adjust the throttle so the engine runs at high rpm, then
operate the boom, arm, and bucket for 5 to 10 minutes.
Repeat all movements several times.
6. Continue the warm-up process until the engine coolant
temperature reaches the normal operating range
displayed on the monitor. See “Monitor” on page 3-38.
WARNING!
• In case of emergency, irregular engine operation, or other faults, turn the key switch to OFF
or press the emergency stop switch to stop the engine.
• Do not operate the machine immediately after starting the engine. Insufficient warm-up of
the machine and hydraulic oil may cause slow control response or abrupt movement
during operation, resulting in serious accidents. Warm-up is especially necessary in cold
areas.
Failure to follow these warnings could result in death or serious injury.
Fig. 4-18
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