　　
1 hot water pump inlet and outlet valves are not open, out of the pipeline obstruction, abortion impeller blocked. Solution, remove obstruction.
　　
2. Motor running in the wrong direction, motor phase loss is very slow. Adjust the motor direction, sturdy motor wiring.
　　
3. Hot water circulation pump suction pipe leaks. Tighten the sealing surface, remove the air.
　　
4. The pump is not filled with liquid, there is air in the pump chamber. Open the pump cover or open the exhaust valve and drain the air.
　　
5. Inadequate import and export of water, suction stroke is too high, the valve leaks. Shutdown inspection, adjustment (water pipe and pipelines with suction easy to use this phenomenon).
　　
6. Pipeline resistance is too large, improper selection of centrifugal pumps. Reduce the pipe bend, re-select the pump
　　
Second, hot water circulation pump failure flow reasons
　　
1. Hot water circulation pump import and export valve is not open, out of the pipeline obstruction, abortion impeller blockage. Solution, remove obstruction.
　　
2. Pipeline, hot water circulation pump impeller impeller blockage, scale deposition, valve opening insufficient. Remove the obstruction and readjust the valve opening.
　　
Centrifugal pump voltage is low. Regulated
　　
Impeller wear. Replace the impeller.
　　
5 over the rated flow use. Regulate the flow off small outlet valve
　　
Centrifugal pump suction is too high. Lower suction.
　　
7. Pump bearing wear. Replace the bearing.
　　
Third, hot water circulation pump fault noise vibration reasons
　　
1. Pipe support unstable. Stabilize the pipeline.
　　
Liquid mixed with gas. Increase suction pressure exhaust.
　　
3. Cavitation generated. Reduce the degree of vacuum
　　
4 bearing damage. Replace the bearing.
　　
5. Motor overload heating operation. Regulate the flow off small outlet valve.
　　
Fourth, hot water circulation pump fault motor heating reasons
　　
1. Hot water circulation pump flow is too large, overloaded operation. Off small outlet valve
　　
Rubbing Check exclusion.
　　
3. Hot water circulation pump motor bearing damage. Replace the bearing.
　　
Insufficient voltage. Regulated.
　　
Five hot water circulation pump leakage reasons
　　
1. Hot water circulation pump mechanical seal wear. replace.
　　
2. The pump has sand holes or cracks. Welding repair or replacement.
　　
3. sealing surface is not flat. Trimming.
　　
4. Loose mounting bolts. Tighten.
Capacitor Parts Forming Machine
SF-501C has High production efficiency, 15-20 tubes can be placed in one time,which is 2-3times that of manual work.
SF-501B Apply to mass production, excellent device for feet cutter moulding.
SF-501A Customized vibrating plate automatic feeding and cutting feet, suitable for bulk electrolytic capacitors, leds.
SF-501 The Resistor bulk Forming Machine apply to mass production,the best assistant equipment for short feet operation.Apply range:A<10mm and B<16mm electrolytic capacitor.
SF-511 The motor can be variable speed without noise.Manual belt type unilateral capacitor, resistor, crystal, electronic parts Cutting Machine.
SF-512 It is suitable for roll or box packed material.side-band radial lead cutting machine. taped automatic capacitor cutting machine is a small size.Cutting accurately.Suitable for long and short foot processing.
Capacitor Shearing Machine,LED Capacitor Resistor Component,Capacitor Bending Forming Machine,Bulk Capacitor Shearing Machine
SINGSUN ELECTRONIC SCIENCE & TECH CO.,LTD , https://www.singsunautomatics.com