1. Pipeline pump installation requirements 1) Pipeline pump installed before installation should check whether the loosening of fasteners, the pump body flow path with or without foreign body blockage, so as to avoid damage to the impeller pump and pump body. 2) The pipe weight should not be added to the pump during installation to avoid distorting the pump. 3) The installation must tighten the anchor bolts, so as not to start too much vibration, affecting the performance of the pump. 4) For maintenance convenience and safety, install a regulating valve on the inlet and outlet of the pump and install iE on the pump outlet - only pressure gauge to ensure the operation within the rated head and flow range and prolong the service life of the pump . 5) Turn the pump shaft after installation, the impeller should be free of friction or stuck, or the pump should be disassembled to check the cause. 2. Pipeline pump start and stop requirements (1) Preparation before starting 1) Check the motor steering is correct, from the top of the motor to the pump for clockwise rotation, the test run time is short, so as not to damage the mechanical seal dry grinding. 2) Open the exhaust valve so that the liquid filled the entire pump, to be closed after the exhaust valve. 3) Check whether the normal parts. 4) Hand pump pump to make the liquid into the mechanical seal face. (2) Start 1) fully open the inlet valve. 2) Close the outlet pipe valve. 3) Start the motor, observe the pump is running correctly. 4) adjust the outlet valve opening to the required conditions, such as the user at the pump outlet with a flow meter or pressure gauge, the outlet valve should be adjusted by the opening of the pump performance parameters listed in the rated point on the run and through Adjust the opening of the outlet valve and measure the motor current of the pump so that the motor runs within the rated current or else the pump will be overloaded (ie high current) to burn the motor. Adjust the outlet valve opening degree and pipeline conditions. 5) Check the seal leakage. Sui situation, the normal mechanical seal leakage should be less than 3r per hour. iL (no leak). 6) Check electric æŒ, bearing temperature should be ≤ 70 ℃. (3) Stop 1) Close the discharge pipe valve. 2) Stop the motor. 3) Close the inlet valve. 4) If long-term shutdown, the pump liquid should be depleted. 3. Pipeline pump maintenance requirements (1) Maintenance in operation 1) The inlet pipe must be filled with liquid, to prevent long-term operation of the pump in cavitation. 2) Regularly check the motor current value, must not exceed the motor rated current. 3) Long-term operation of the pump, due to mechanical wear, so that the unit noise and vibration increases, it should stop checking, if necessary, replace the vulnerable parts and bearings, unit overhaul period is generally one year. (2) Mechanical seal maintenance 1) Mechanical seal lubrication should be clean without solid particles. 2) It is forbidden to work mechanical seal under dry grinding condition. 3) Before the start of the optical disc should be driven pump (motor) a few times, so as not to suddenly start causing graphite ring fracture damage.