English
The following table is gear pump in the use of some common fault phenomena and troubleshooting
Created on 2025.05.17
Troubleshooting
The following table is gear pump in the use of some common fault phenomena and troubleshooting.
Gear pump in the use of some common fault phenomena and troubleshooting
Fault phenomenon | Cause analysis | Exclusion method |
1. There is no oil or pressure in the pump | (1) The rotation direction of the prime mover and pump is inconsistent | (1) Correct the rotation direction of prime mover |
(2) Pump drive key off | (2) Reinstall the drive key |
|
(3) The oil inlet and outlet are connected reversely | (3) Select the correct connection method according to the instruction manual |
|
(4) The oil level in the oil tank is too low, and the liquid level of the suction pipe is exposed | (4) Replenish the oil above the minimum level line |
|
(5) Too low speed and insufficient suction | (5) Increase the speed above the minimum speed of the pump |
|
(6) Oil viscosity too high or too low | (6) Select the working oil with recommended viscosity |
|
(7) Blockage of suction pipe or filter device results in poor oil absorption | (7) Choose the right filter according to the pump and instruction |
|
(8) Poor oil absorption due to high suction pipe or filtration accuracy | (8) Choose the right filter according to the sample and instruction |
|
(9) Air leakage in suction pipe | (9) 检查管道的接头，密封并固定它们 |
|
2. The flow is not enough to reach the rated value | (1) The speed is too low to reach the rated speed | (1) Select the prime mover speed according to the rated speed specified in the product sample or instruction manual |
(2) There is a leak in the system | (2) Check the system and repair the dew point |
|
(3) Because the pump works for a long time and vibrates, the connecting screw of the pump cover is loose | (3) Tighten the screws properly |
|
(4) Same as table 1. (9) | (4) Same as table 1. (9) |
|
(5) Insufficient oil absorption: ① Same as table 1. (9) ② The inlet filter is blocked or the flow rate is too small ③ The suction pipe is blocked or the diameter is small ④Improper medium viscosity | (5) Solutions for insufficient oil absorption: ①Same as Table 1. (9) ② Clean the filter or choose a filter with a flow rate of more than twice the pump flow rate. ③ Clean the pipeline and choose a suction pipe with a diameter not less than the pump inlet diameter. ④ Select the recommended viscosity working medium |
|
3. The pressure won't rise | (1) The pump cannot draw oil or the flow is insufficient | (1) Same as Table 1. |
(2) The setting pressure of the overflow valve in the hydraulic system is too low or has malfunctioned. | (2) Reset the overflow valve pressure or repair the overflow valve |
|
(3) Same as Table 2. (2) | (3) Same as Table 2. (2) |
|
(4) Same as Table 2. (3) | (4) Same as Table 2. (3) |
|
(5) Same as Table 1. (9) | (5) Same as Table 1. (9) |
|
(6) Same as Table 2. (5) | (6) Same as Table 2. (5) |
Leave your information and
we will contact you.
we will contact you.
Phone
WhatsApp
WeChat