Vertical hot water circulation pump failure reason and solution

Thermal circulation pump temperature within 120 degrees to use, installation is divided into vertical and horizontal. Hot water circulation pump failure are not lack of water, flow, noise vibration, leaking several failure to explain in detail the following various failure reason and solution.

A fault is not water, hot water circulating pump

1, import and export valve does not open, in and out of the pipeline jam, abortion impeller blocking. Solution, remove the obstruction.

Phase 2, the motor running direction is wrong, motor rotation speed is slow. Adjust the direction of motor, the motor wiring.

3, suction pipe leakage. Tighten the sealing surface, eliminate the air

4, not the filling of liquid, pump chamber in the air. Open the pump cover or open the discharge valve, exhaust air.

5, import and export of water supply is insufficient, electron absorption is high, the bottom valve is leaking. Stop check and adjust (hooked up to the water pipe and use suction easy to appear the phenomenon).

6, pipeline resistance is too large, improper centrifugal pump selection. Reduce the pipe bend, to choose the pump

Second, the heat pump fault flow insufficient reason

1, import and export valve does not open, in and out of the pipeline jam, abortion impeller blocking. Solution, remove the obstruction.

Part 2, pipelines, flow impeller blocking, scale deposition and valve opening. Remove the obstruction, readjust the valve opening.

3, low voltage. 4, the impeller wear. Change of the impeller. 5, more than the rated flow. Adjust flow down outlet valve

6, an electron is high. Reduce the suction. 7, pump bearing wear. Replace the bearing.

Three, hot water circulating pump fault vibration noise

1, pipe support. Solid line. 2, liquid mixed with gas. Improve the suction pressure and exhaust.

3, produce cavitation. Reduce the degree of vacuum. 4, bearing damage. Replace the bearing.

5, motor overload running fever. Adjust flow down outlet valve.

Four causes electrical heating, hot water circulating pump

1, the traffic is too large, the overload operation. Turn down the outlet valve

2, scratches. Check out. 3, motor bearing damage. Replace the bearing. 4, voltage is insufficient. Voltage regulator.

Five, the hot water circulation pump failure is leaking

1, mechanical seal wear. Replacement. 2, the pump body with sand holes or broken. Weld repairs or replacement.

3, sealing surface is not smooth. Trim. 4, installation bolt loosened. Tighten.