Precautions: 1, manual hydraulic pipe bender before use, first check whether the oil in the tank is sufficient, such as insufficient should be filled. 2, before the work of the switch - must be shut down; otherwise the pressure can not be played, and loosen the gas plug, in order to gas the tank. 3, the outside diameter of the pipe must be bent to fit with the bend mold grooves, or else the workpiece will produce a concavity phenomenon or will be molded! 4, welded pipe welds in the bend to be in the outside or inside. Bending process of the two bearing wheels to rotate at the same time and the workpiece in the groove of the supporting wheel sliding, such as one-sided immobility should stop the operation. 5, manual hydraulic pipe bender usually do a good job of cleaning and maintenance of the equipment, refueling to be clean, - must be filtered by more than 80 mesh filter, the oil filtering device should be cleaned regularly 6, manual hydraulic pipe bender using No. 15 mechanical oil. In order to facilitate user maintenance, manual hydraulic pipe bender vulnerable seals into the spare parts bag.
Possible failures and troubleshooting methods:
1, failure: the piston rod extends a certain length after shaking the handle, the item rod a stretch and shrink. Reason: the refueling screw is not loosened, loosen the refueling screw. Elimination method: the pump body in the oil valve mouth is not sealed oil valve ball is not gardening There is garbage in the oil, should be replaced with clean oil, replace the steel ball.
2, fault: large and small pump piston rod oil seepage. Causes: sealing ring damage; Remedy: replace the sealing ring in the spare parts bag.
3, fault: switch oil seepage; cause: switch pressure ring is too loose; exclusion: remove the limit screw and switch, tighten the pressure ring.
4, fault: the top lever ejection weakness, can not work. Reason: the steel ball inside the switch is not well sealed, the top of the switch is not top of the steel ball or falling steel ball; Rule out the method: replace the steel ball to tighten the switch, such as no steel ball, should be added to the steel ball.
5, fault: the top of the top rod oil leakage; cause: the top of the piston rod seal is damaged; exclude methods: replace the 14 × 2.4 O-type seal (self-provided)
6, fault: large and small pump suction oil is insufficient; cause: the filter mesh with garbage or oil is insufficient; exclude methods: unscrew the 12 serial number parts, gasoline to clean the mesh body and fill with oil.
7, fault: mold mounting holes cracked; cause: mold items out of the lateral load such as: bend the workpiece and then bend the position of the position is not put correctly; exclusion method: check the two support wheel position is symmetrical, support wheel and the workpiece fit at the oil, and put the correct position of the second bending.
8, fault: pick up the pump is also known as bubble pump, back to the pump; cause: the outlet valve ball can not be normal reset; exclusion: the role of the rod (15) out, so that the piston pump pressure, in the handle seat (14) with a Lang head to knock a few times can be made to reset the valve ball.