(3) Diving parking sand pump ① high temperature cooling ZJQ300-20-37 first pumping sand pump, the cooling rate is less than or equal to 10 degrees per minute, the temperature was reduced to less than 800 degrees, in order to stop. ② close the outlet valve. ③ stop the motor. ④ close the inlet valve. ⑤ such as long-term parking, should dive in the sand pump pumping liquid exhausted. Careful observation diving sand pump wiring diagram, be able to find serious problems in wiring. Design specification: PE line and N line if together as one, pumping sand pump to prevent breakage and the use of copper wire, use cross-section of 10mm wire. This example uses 4mm2 wire, it is easy to break and electric shock. Construction of electricity provision: PE line and N line can not be combined, should be separated; electrical submersible pumps for pumping sand pump ZJQ300-15-30, should leakage protection. This example only air switch, and therefore unsafe. Any incident afterwards easy, but beforehand find it difficult to improve the technical quality of construction workers is the key. Yongfu County pumping sand pumps, marine sand pump suction, ZJQ300-15-30 pumping sand pump is provided by the Shijiazhuang-Pump Co., Ltd. faction. Yongfu County pumping sand pumps, marine sand pump suction, ZJQ300-15-30 pumping sand pump is the Shijiazhuang-school Pump Co., Ltd. (www.shipaipump.com) this year introduced a new upgrade, the above picture is for reference only, please dial this Tel pages or pictures on obtain the latest information, Contact: Manager Xu.