故障二：流量下降。
1、泵未达到额定转速
检查动力源，如电动机的电压、转速等
2、螺杆或螺杆衬套磨损，造成间隙过大
更换磨损零件
3、安全阀不密封
使阀完全复位或修理甚至更换阀、阀座、弹簧
HSN280系列三螺杆泵型号
HSNH280-43
HSNH280-43N
HSNH280-43Z
HSNH280-43W1
HSNH280-43NZ
HSNH280-43W1Z
HSNH280-46
HSNH280-46N
HSNH280-46Z
HSNH280-46W1
HSNH280-46NZ
HSNH280-46W1Z
HSNH280-54
HSNH280-54N
HSNH280-54Z
HSNH280-54W1
HSNH280-54NZ
HSNH280-54W1Z
---
HSNS280-43
HSNS280-43N
HSNS280-43Z
HSNS280-43W1
HSNS280-43NZ
HSNS280-43W1Z
HSNS280-46
HSNS280-46N
HSNS280-46Z
HSNS280-46W1
HSNS280-46NZ
HSNS280-46W1Z
HSNS280-54
HSNS280-54N
HSNS280-54Z
HSNS280-54W1
HSNS280-54NZ
HSNS280-54W1Z
---
HSNF280-43
HSNF280-43N
HSNF280-43Z
HSNF280-43W1
HSNF280-43NZ
HSNF280-43W1Z
HSNF280-46
HSNF280-46N
HSNF280-46Z
HSNF280-46W1
HSNF280-46NZ
HSNF280-46W1Z
HSNF280-54
HSNF280-54N
HSNF280-54Z
HSNF280-54W1
HSNF280-54NZ
HSNF280-54W1Z
HSNH系列三螺杆泵常规型号：
HSNH40-38 HSNH40-46 HSNH40-54 HSNH80-36 HSNH80-42
HSNH80-46 HSNH80-54 HSNHnbsp; HSNHnbsp; HSNH120-51
HSNHnbsp; HSNHnbsp; HSNHnbsp; HSNHnbsp; HSNH280-43
HSNHnbsp; HSNHnbsp; HSNHnbsp; HSNHnbsp; HSNH440-52
HSNHnbsp; HSNHnbsp; HSNHnbsp; HSNHnbsp; HSNH660-51
HSNHnbsp; HSNHnbsp; HSNHnbsp; HSNHnbsp; HSNHnbsp;
HSNHnbsp; HSNHnbsp;HSNHnbsp;HSNHnbsp;HSNH
HSNHnbsp;HSNHnbsp;HSNHnbsp;HSNHnbsp;HSNHnbsp;
HSNHnbsp;HSNHnbsp;HSNHnbsp;HSNHnbsp;HSNHnbsp;
HSNHnbsp;HSNHnbsp;HSNHnbsp;HSNH