A luffing Tower Crane is a good choice for work sites where two or more cranes are working at the same time. This is because the slewing radius of a luffing crane is highly reduced in comparison to standard tower crane types. The luffing jib tower crane also has a higher lifting capacity because the weight is transferred from the crane`s jib much more effectively.
Luffing Crane,Luffing Jib Crane,Inner Climbing Tower Crane,Luffing Jib Tower Crane,Tower Crane 10t SHEN YANG BAOQUAN BUSINESS CO., LTD , https://www.sczenghui.com
1. Magnetic pump due to cavitation problems: Pump cavitation causes mainly pump inlet tube resistance, gas transmission medium more, filling pump is not sufficient, the pump inlet head is not enough and other reasons. Cavitation is the most damaging to the pump. The pump vibrates violently when cavitation occurs. The serious balance will destroy the pump bearing, rotor or impeller. This is a common cause of magnetic pump failure.
2 isolation sleeve damage: magnetic pump magnetic coupling pump is transported by the cooling medium, if the medium has hard particles, it is easy to cause the isolation sleeve scratched or scratched, and sometimes if improper maintenance may also cause isolation Set of damage.
3. No medium or medium flow is small: the rotor shaft and the stability of the dry friction bearings, burning bearings. Magnetic pump is provided by the transmission medium to the sliding bearing lubrication and cooling, without opening the valve or outlet valve in the case of sliding bearing lubrication and cooling without the transmission medium caused by high temperature and thus damaged.
Magnetic pump safe operating procedures:
1. Preparation before start-up a Clean up the debris around the equipment that can affect the safety of the equipment and operators. b check the seal water tank is working within the normal working level, insufficient should be added. c Check all valves in the sealed water line to be properly opened and closed. d When driving for the first time after a long-term shutdown or overhaul, remove the fan cover of the motor and turn it manually. Check if the magnetic pump rotates freely and install the fan cover after confirming that there is no problem. e Open the pump inlet valve and close the pump outlet valve. f Notify the electrician to send the electricity to the field operation panel.
2. Startup: a Start the pump and check the sound and vibration of the pump. b Open the pump outlet valve without any abnormalities.
3. Stop normally Close the outlet valve, then stop the motor immediately, then close the inlet valve again.
4. Emergency stop immediately stop the motor, and then close the outlet valve and inlet valve.
Magnetic pump common problem analysis: