Ensure that the pneumatic diaphragm pump is always in good operation or standby state. Domestic pneumatic diaphragm pump, fire pump, spray pump, booster pump, sewage pump and air conditioner pneumatic diaphragm pump are installed in all buildings. The maintenance personnel of the management department are responsible for the regular maintenance of the pneumatic diaphragm pump.

1、 Daily inspection and maintenance shall be carried out once a week for domestic pneumatic diaphragm pump and air conditioner pneumatic diaphragm pump, and comprehensive maintenance shall be conducted once every six months.

2、 The fire pneumatic diaphragm pump and spray pump shall be put into trial operation once a month, and the booster pump shall be operated every two months for 10-15 minutes. When the fire pump is started, the test fire hydrant outlet water spray range at the top of the pipe network shall be more than 6m, and the comprehensive maintenance shall be conducted once every half a year.

3. Check packing sealing condition, if there is water leakage, add or replace asbestos rope packing.

4. If the coupling bolts and rubber pads are damaged, they should be replaced.

5. Tighten the frame screw and do rust proof treatment.

6. Due to the frequent operation of domestic pneumatic diaphragm pump and air conditioner pneumatic diaphragm pump, the bearings at both ends of the coupling should be removed every year for cleaning or replacement.

6、 Motor maintenance

1. The appearance inspection shall be neat, the name plate shall be in good condition, and the grounding wire shall be well connected.

2. Remove the wire connecting piece in the motor junction box, and use a 500V megohmmeter to test the insulation resistance of the motor winding between phase to phase and phase to ground, which should not be less than 0.5 megohm.

3. The three-phase conductor and connecting piece in the motor junction box shall be firm and tight.

7、 Maintenance of related valves, pipes and accessories

1. The opening and closing of each valve shall be flexible and reliable without leakage inside and outside.

2. The action of one-way valve shall be flexible and there shall be no water leakage inside and outside the valve body.

3. The indication of pressure gauge is accurate and the dial is clear.

4. The appearance of pipes and accessories shall be neat and beautiful without cracks, and the paint shall be complete without falling off.

5. Inching to judge whether the pneumatic diaphragm pump steering is correct, if there is any error, it should be corrected.