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FOSHAN YUANLI PRECISION MACHINERY CO.,LTD

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FOSHAN YUANLI PRECISION MACHINERY CO.,LTD
FREE TEL:13827748026
TEL:0757-63856189
FAX:0757-63858669
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ADD: No.3 Xingfa Road,Luocun Xiabai The Third Industrial Zone,Nanhai District Foshan Guangdong China

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Failure and elimination of hydraulic system

Data Source:Foshan Yuanli Precision machinery Co. , LTD Time:2015-11-27

The investigation sequence is: oil pump motor set - Holzer switch - reversing valve - overflow valve - cylinder seal
Check oil pump motor set
Start the motor oil pump, check whether the oil suction pipe of the plunger pump into the oil
Not into the oil 1 three-phase power supply phase change (motor reversal); 2 pump motor group anomaly
Solution: 1 the circuit breaker any two into the line (or line) swap position; 2 repair or replace the oil pump motor.
The oil pump motor group, the second step of inspection.
(two) check Holzer switch
Turn on the power, do not start the motor pump, remove the Holzer switch, the Holzer switch in turn close to the magnet (attention, with both ends of the magnet test), Holzer switch indicator light / off. At the same time, the observation and Holzer switch connected to the relay is action.
Not corresponding to the light / off switch is damaged Holzer
Solution: replace the new Holzer switch
No action relay relay damaged
Solution: replace the new relay
Can the light / death, relay switch / relay Holzer no damage to normal, the next step to check
(three) check valve
Turn on the power supply, do not start the motor oil pump, the Holzer switch in order to close to the magnet, while the hand to the solenoid valve of the valve stem is moving. Can be repeated several times to determine its stability.
The stem is not moving valve work abnormal
Solution: 1 clean the valve core and the valve cavity; 2 to replace the new valve.
The mobile valve is normal, check the next step
(four) check the overflow valve
Turn on the power, do not start the motor oil pump, press the high pressure start button, to use the hand to the solenoid valve of the valve stem is moving. Can be repeated several times to determine its stability.
The stem is not moving relief valve work abnormal
Solution: 1 clean the valve core and the valve cavity; 2 replace the new valve.
The valve rod overflow valve is normal, the next step to check
(five) check cylinder seal
Open the pump motor (Note: do not open pressure) and take in hand the two reversing Hall switch which are very close to the magnet, also pay attention to the movement in the oil cylinder, and pay attention to how the two baffle plates after peephole no leakage phenomenon.
Two directions have no action or one direction without action piston seal failure
Solution: open the cylinder, remove the piston, replace the new seal. At the same time, the replacement of oil leakage in the end of the phenomenon of the oil seal. Note: when the oil piston is removed, the high pressure plunger rod which is connected with the piston must be protected to prevent the surface scratch or break. )
There are two action piston seal normal direction, check for other reasons.

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No.3 Xingfa Road,Luocun Xiabai The Third Industrial Zone,Nanhai District Foshan Guangdong China

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