一, before the start of preparing 1, determine steering: ensure the separation of motor and pump, motor running, to determine whether to correct, otherwise it will cause slurry pump serious damage, motor burn down. The motor is usually three phase four wire system. If the reversal, among them any two wire switch, motor can form forward like that.
2, check the import and export practice in good condition, do you have any running blockage, pumps and accessories line leak.
3, pump when it starts to shut down exports, not full rotation torque is too big, otherwise the pump may damage, motor also because of excessive current easily destroyed.
4 import practice, open, open the discharge valve to make liquid fills the pump cavity, then close vent valve.
5, for water pump mechanical seal, application of hand plate acting pump rotor so that the lubricant into the mechanical seal face. Avoid mechanical seal when starting dry milling machine seal damage.
6, manual turning: rotor parts should be flexible rotation, no jam, friction phenomenon.
二, the startup and operation
1, again check valve fully open, shut off the pipeline valves.
2, connect the power supply, when the pump reaches the normal speed, then gradually open the valves on the discharge pipe, pay attention to close the valve operating time shall not exceed 5 minutes. Otherwise, bearing, mechanical seal damage easily.
3, operating conditions for operation within the scope of the manual use, as far as possible close to the design point. Due to traffic and power generally can't see, so to adjust pressure (= water pump outlet pressure, inlet pressure head) and current within the rated.
4, check the shaft seal: mechanical seal: 10 drops/min Packing: 1 ~ 2 drops per second If more than standard, should handle in time.
5, check the vibration and noise.
三, parking
1, gradually close the export pipeline valves, cut off power supply.
2, such as environmental temperature is below zero degrees Celsius, should put the liquid is put inside the pump, so as to avoid freezing.
3, such as stopping for a long time, pump should be disassembled to clean and packaging. |