Q & A
Category
Category
TQCN Series
Q1.Pump does not start.
| Cause | Remedy |
| No power supply. | Connect the electricity supply. |
| Too low/high voltage. | Check if supply voltage is within ± 10%. |
| Seized-up pump. | Place a screwdriver against the shaft end of the motor to check it the rotor will spin freely,and contact your pump supplier. |
Remark: before operation, turn off power switch first.
Q2.Pump cuts out during operation.
| Cause | Remedy |
| Seized-up pump. | Same as above. |
| Overloaded motor. | Turn off the power supply and restart or contact your pump supplier. |
| Poor water supply. | Check if pump suction inlet is blocked. |
Remark: before operation, turn off power switch first.
Q3.Pump starts when no water is consumed.
| Cause | Remedy |
| Existing pipe is leaking. | Fix the leakage. |
| Defective check valve. | Clean or replace with a new valve. |
| Pipe suck in air. | Check the suction pipe and water supply. |
Remark: before operation, turn off power switch first.
Q4.Pump starts and stops too frequently.
| Cause | Remedy |
| Leakage in suction pipe or air in the water. | Check the suction pipe and water supply. |
| Discharge flow is too low. | Set your tap on a higher water flow. |
Remark: before operation, turn off power switch first.
Q5.Electric shock.
| Cause | Remedy |
| Ineffective grounding. | Reactivate grounding. |
Remark: before operation, turn off power switch first.
Q6.Pump does not stop when water is not consumed.
| Cause | Remedy |
| Poor water supply or air suck in. | 1. Turn off the power supply and open the refilling plug to release the air. Then restart. 2. In case of long suction pipes, turn off the power and make sure if water supply is adequate. |
| Pressure set is too high. | Adjust pressure per XI. |
| Flow set is too small. | Adjust flow switch per XII. |
Remark: before operation, turn off power switch first.
Q7.Pump runs normal but with very low discharge flow.
| Cause | Remedy |
| 3-phase motor runs in wrong rotation. | Switch any of the 2 wires from motor terminal to correct rotation. |
| Poor water supply. | check if water supply is adequate and if the suction pipe is blocked. |
Remark: before operation, turn off power switch first.