| Check items | Notes |
| Pre-job inspection A．Before the main motor starts 1.Whether each part is full of oil 2.Whether the pressure meets the specified pressure 3.Pressure adjustment valve abnormal or not 4.Is there any abnormality in the operation of solenoid valves for clutches and brakes? 5.Is there pressure leak? 6.Pressure vessel (including balancer cylinder) Water discharge B．After the main motor starts 1. Flywheel rotation check 2. Full-operation inspection | The oil in the oilpipelineof the lubrication system must be filled before the machine starts. The manual button can be used to fill in the oil by hand-pulling it at the same time. At the same time, check whether the pipe has ruptured or cut off. Please pay attention to refueling when manually refueling. Is the clutch air pressure (4.0~6kg/cm2) enough? Should pay attention to changes in air pressure must be reconfirmed. When the pressure is introduced or the pressure is changed, it must be confirmed whether the secondary pressure meets the requirement. Occasional failure to control the selected pressure, that is, the dust on adjusting valve seat must be disassembled and washed. Drive the clutch by the inch operation and use the exhaust sound of the solenoid valve as the authentication action. Check whether there is any air leakage in the piping connection (joint, etc.), clutch cylinder, balancer cylinder, etc. Pay special attention to the starting condition, acceleration, vibration, and sound (idle for 5 seconds or longer). The V belt will vibrate when the rotation resistance increases. Before operation, perform full operations such as inching motion, safety one-stroke, continuous operation, emergency stop, and foot pedaling to check for any abnormalities. |
| Check items | Notes |
| 1. Air cleaner cleaning 2. Electrical equipment relations check 3.Is there any abnormality in the electrical wiring? 4. Cleaning of all parts | The dismantling and cleaning of the metal mesh in the filter (but the factory piping system can be implemented once in two weeks if there is no serious accumulation of water). When the filter is blocked, the air pressure cannot rise. The looseness of the terminal fittings, the adhesion of oil, dust, etc., the contact condition of the contacts, and the goodness of other insulation shall be checked and maintained. Whether there is damage, breakage, loosening of the connection, etc., please pay attention to inspection and maintenance. Remove oil, dust, debris, etc., and check for cracks. |
| Check items | Notes |
| 1.Clutch and brake stroke measurement 2.V belt tension check for main motor 3.Balancer cylinder inner wall condition check | Check that the clutch and brake strokes are within 0.5mm to 1.0mm. The V belt can be checked by hand to see the degree of tension. The following arc is ideal for a radian of about 15 mm deep. Check to see if there is any indentation or lubrication. |
| 4.Confirmation of top dead stop position Inspection in the job A.Pay attention to the oil status of each part B.Pay attention to the change in air pressure Cleaning, packing andinspection of all parts | The top dead point stop position is unstable due to the following reasons: 1.Although the stop position is fixed, the position of the micro switch should be adjusted when the dead point is not satisfied. 2．Although the stop position is not fixed, but the error range is not large, please adjust the brake stroke. 3. When the stop position is not fixed and the error range is too large, adjust the cam fixing screw or the relevant connection position. During operation, please pay attention to the oil status at any time. Use a hand-pressure pump to pull at any time. Do not shut off the oil and cause the bearing copper and the slider guide to burn. The heat is allowed to rise below +30°C at room temperature, and machine must be stopped when it is over hot. Motor heat is limited to the temperature of 60 °C. Always pay attention to the pressure gauge during the operation, and avoid abnormal pressure to prevent the damage of the friction plate (especially when the pressure drops). The upper air valve should be locked to discharge the contaminated water and release air cylinder pressure. At the same time, all parts should be cleaned and inspected for cracks or damage. |
| Check items | Notes |
| 1. Accuracy check 2.Clutch disassembly check 3.Solenoid check 4.Check whether the foundation screws are loose 5. Electrical equipment inspection | Slide guide clearance (0.03m/m~0.04m/m) The inspection of the friction plate, the inspection of the wear condition, the measurement of the wear condition, the status of the wearer's board, the wear of the outer and inner tooth surfaces of the housing, and the wear level of the "P" Ring, the spring, and the inner surface of the cylinder. Whether the operating condition is good or not, whether the coil has burned or not, and whether there is any abnormality in the spring. Please tighten the base screw. The wear of the relay contacts, loosening of the connection, breakage, etc. Please exercise care. |
| Phenomenon | Causes | Inspection | Elimination methods |
| Pump cannot work | A. Pump micro switch for actuation abnormal B. Solenoid valve coil circuit stops C. Wire breakage D. Pipeline component failure, joint damage air leakage. E. The pump itself fails | Power test Power test Power test View and inspect Manually View and inspect | Replacement Replacement Wire connection Pipeline correction Repair or replacement |
| Pump cannot stop working | A. Insufficient oil B. Mixing air into the pump C. Overloaded circuit board forced return D. Hydraulic motor steering error E. Internal O-ring damage F. Elastic damage to the spring G. Internal leakage of pump H. Pipe fittings leaking | Check oil gauge Air removal inspection View and inspect | Fuel oil Remove air View and inspect Replacement of wires Replacement Replacement Repair or replacement Intensify and replace |
| Overload protection has no effect when machine overloaded | Proximity switch positioning error | View proximity switch position | Replacement or adjustment of pressure regulating valve |
