Reason:

(1) Low oil pressure

(2) Low oil level due to oil leakage

(3) Abnormal tank upper limit

(4) Low primary water pressure (water-cooled hydraulic pressure source only)

Solution.

(1) Check the oil pressure

　If the pressure is below the specified pressure, adjustment of the valve or repair of the hydraulic circuit (hydraulic hose, hydraulic pump, bearing, etc.) is required.

(2) Check the oil quantity

　If the oil quantity is below the specified level, the oil needs to be replenished.
　If the oil level continues to drop, the hydraulic circuit needs to be repaired.

(3) Check the oil level in the auxiliary tank under the horizontal auxiliary table and confirm that the pump is working.

(4) Check if the primary water valve for the hydraulic pressure source is open
Click here for details when there is a touch panel monitor. Concerning the hydraulic pressure source display monitor