Question 1

Can not find reference point after power on

Accepted Answer

a.Reading head joint of the light encoder loosed. Reading head can not overlap with reference point of the light encoder when machine returned and oil pump is working with load.

Question 2

Low-voltage circuit breaker is tripping operation after oil pump power on.

Accepted Answer

The reason as follows: a. Current losing phase b. High-pressure filter element is clogging caused by the reason of oil pump motor current is too large c. Setting of the low-voltage circuit breaker is too small and adjusted value enlarged.

Question 3

Oil pump is noisy

Accepted Answer

Reason analysis: a.Check filter element of the inlet port b.Check high-pressure filter element c.Working time of oil pump is too long cause abrasion Solution: a.Clean or change filter element b.Change high-pressure filter element c.Change oil pump

Question 4

Oil temperature is so high that hydraulic system can not work regularly and seal lose it's effect. Reason analysis:

Accepted Answer

a.Hydraulic oil model can not reach standard; b.System pressure is so high that it damaged seriously. c.High-pressure filtering element clogging d.Environment temperature is too high and working time is too long .Machine wityout cooling device. Solution: a.Change hydraulic oil reached standard and durable 46# hydraulic oil is recommended; b.Low down system working and unload pressure; c.Change high-pressure filter element and enlarge oil return route; d.Equipped cooling device when working time is too long and environment temperature is too high.

FAQ

Can not find reference point after power on

Low-voltage circuit breaker is tripping operation after oil pump power on.

Oil pump is noisy

Oil temperature is so high that hydraulic system can not work regularly and seal lose it's effect. Reason analysis:

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