Magnetic drive centrifugal pump of different switching states and confirmation note

magnetic drive centrifugal pump in the pump switch normal initial state to confirm

(1) pump is in good working order;

2) pump population pneumatic valve fully open;

3. Pump discharge pneumatic valve open;

(4) pump pre hotline pneumatic valve closed;

5) object completely dynamic valve closed;

6 of the pump outlet pressure and flow rate in the normal steady state.

magnetic drive centrifugal pump spare pump switch initial state to confirm

(1) pump inlet pneumatic valve in the fully open position;

(2) the pump discharge pneumatic valve closed;

3. Putting-in-service proactively normal cooling water system;

(4) pump preheating ( Hot oil pump) ；

(5) and equipment within the corresponding post operation, the implementation of the pump power supply condition check to confirm the motor power circuit connected either with boot conditions;

6. Confirm the motor rotating in the right direction, have the boot.

to start the standby pump ( With no load)

(1) contact equipment corresponding post operator to kai pump.

(2) spare pump turning.

3. Start the standby pump motor.

4. If there is a stop immediately start the pump in the following circumstances:

abnormal leakage;

abnormal vibration;

peculiar smell;

abnormal sound.

spark;

flue gas;

current continued high.

5. The pump outlet pressure is normal and stable.

6. Confirm the pump with switching conditions. Switch



1. Slowly open the standby pump discharge pneumatic valve;

2) gradually down the running pump export pneumatic valve;

3. Confirm the original running pump discharge pneumatic valve seated, the original standby pump export pneumatic valve open;

4. Stop the pump motor operation;

5. Confirm the pump outlet pressure and flow rate to normal operation now, accord with the demand of the technical index;

6. Confirm now running pump motor current is within the normal range;

7) adjustment is now running pump outlet flow;

pre hotline pneumatic valve was closed now running pump;

pet-name ruby hotline pneumatic valve preheating open the original pump operation. Switching process should cooperate closely, coordinated, and minimize the fluctuation of pump discharge flow rate and pressure, ensure the pump switch under steady state. After the switch after adjustment and confirmation, according to the requirements of the device process to adjust flow.