XCMG XE17U, Инструкция по эксплуатации

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09.2020 Seite 89 / 197
Warm-up of Hydraulic System
Warning! – In case of malfunction or abnormal operation, shut off immediately.
– Before work, let the engine reach the usual work temperature, especially in
freezing days.
Notice The ideal working temperature of hydraulic oil is 50~80 (120~175°F).
Warm up as follows:
1. Run the engine at middle speed without load for 5-10 minutes until the operating
temperature has been reached.
2. Set the safety lever to “unlock” position.
3. Move the arm, boom and bucket cylinders for 5 times slowly to circulate hydraulic
oil in the machine without load.The duration of this operation is 5 minutes.
4. Check the clearance of the equipments (bucket, arm and boom) and lift them
completely. Then swing the upper structure clockwise and counterclockwise for 3
turns each.
5. Swing the upper structure until it is
in standard
position (vertical to the
undercarriage). Lift the crawler off ground and move back and forth. Then drive
the travel motor for 2 turns (1 turn at high/low speed each).
6. Repeat step (5) for the other crawler.
Notice Hydraulic machine warm-up in freezing days
1. Run the engine under idle speed without load for 5 minutes.
2. Run the engine under medium speed without load for 5 minutes.
3. Set the safety rod to “working” position.
4. Move the arm, boom and bucket around slowly without load about 5 times to
circulate the hydraulic oil inside the machine. Do this for about 5 minutes
5. Increase to engine’s maximum speed.
6. Repeat step (4) for about 5 minutes.
7. Lift the equipment (bucket, arm and boom) completely to check clearance, then
slowly swing the upper structure clockwise and counterclockwise for 3 turns each.
8. Swing the upper structure until it is normal to the undercarriage.
9. Then lift the crawler off the ground and move back and forth.
10. Finally drive the motor for 2 turns (1 turn at high low speed each).
11. Repeat steps (9) and (10) for the other crawler.
Note :
– Do not let the cylinder hold out pressure for more than 20 seconds.
– If the rotation speed is still low, continue operation, but take particular care in
case that the equipment’s performance becomes unstable.
Warning! – In case of malfunction or abnormal operation, shut off the engine immediately.
– Before work, let the engine reach the usual work temperature, especially in
freezing days.
Shutdown
Notice Follow the steps’ order as shown below