Machinery Brackets ,Metal Brackets ,Metal Shelf Brackets,Steel Brackets Ningbo Metal Sharing Supply Chain Management Co., Ltd , https://www.sheetsharing.com
1, no liquid to provide, lack of liquid supply or lack of pressure:
â‘´ vacuum pump no water or no proper exhaust;
Solution: Check the vacuum pump housing and inlet lines are all filled with liquid.
⑵ speed is too low;
Solution: Check the motor wiring is correct, the voltage is normal or the turbine steam pressure is normal.
⑶ system head too high;
Solution: Check the system head (especially the friction loss).
â‘· suction is too high;
Solution: Check the existing net head (inlet line is too small or too long will cause a great friction loss).
⑸ impeller or pipeline blocked;
Solution: Check for obstructions.
⑹ rotation direction is wrong;
Solution: Check the direction of rotation.
⑺ Air or inlet line leaks;
Solution: Check for inlet cavitation and / or air leaks.
â‘» stuffing box packing or seal wear, so that air leakage into the vacuum pump shell;
Solution: Check the packing or seal and replace as needed, check the lubrication is normal.
⑼ Insufficient suction head when pumping hot or volatile liquids;
Solution: Increase the suction head, consult the manufacturer.
⑽ bottom valve is too small
Solution: Install the correct size of the bottom valve.
⑾ bottom valve or inlet pipe immersion depth is not enough;
Solution: Consult factory for correct immersion depth. Eliminate eddies with baffles.
â‘¿ impeller clearance is too large;
Solution: check the gap is correct.
â’€ Impeller damage;
Solution: Check the impeller, as required replacement.
â’ impeller diameter is too small;
Solution: Consult factory for correct impeller diameter.
â’‚ pressure gauge position is not correct;
Solution: Check the location is correct, check the outlet nozzle or pipe.
2, the vacuum pump will stop running for a while:
â‘´ suction is too high;
Solution: Check the existing net head (inlet line is too small or too long will cause a great friction loss).
⑵ impeller or pipeline blocked;
Solution: Check for obstructions.
⑶ produce air or inlet pipeline leaks;
Solution: Check for inlet cavitation and / or air leaks.
â‘· stuffing box packing or seal wear, so that air leaks into the vacuum pump shell;
Solution: Check packing or seal and replace as needed. Check the lubrication is normal.
⑸ pumping hot or volatile liquid suction head inadequate;
Solution: Increase the suction head, consult the manufacturer.
⑹ bottom valve or inlet pipe immersion depth is not enough;
Solution: Consult factory for the correct immersion depth and remove vortex with baffle.
⑺ vacuum pump shell gasket damage;
Solution: Check the condition of the gasket and replace it as required.
3, the vacuum pump power consumption is too large:
â‘´ rotation direction wrong solution: check the direction of rotation.
⑵ impeller damage solution: check the impeller, as required to be replaced.
⑶ rotating parts killed Solution: Check the internal wear parts of the gap is normal.
â‘· axis bending solution: Alignment axis or on request to be replaced.
⑸ too high speed solution: check the motor winding voltage or steam pressure delivered to the turbine.
⑹ head below the rated value. Too much liquid pumping Solution: Consult factory. Install throttle valve, cut impeller.
⑺ liquid heavier than expected solution: check the proportion and viscosity.
â‘» The stuffing box does not have the correct stuffing (insufficient stuffing, incorrect stuffing or running in, stuffing too tight)
Solution: Check the packing, packing stuffing.
⑼ Bearing lubrication is not correct or bearing wear Solution: Check and replace as required.
ä¸ The running clearance between wear rings is not correct Solution: Check the clearance is correct. Replace the wear ring of the vacuum pump housing and / or impeller as required.
⑾ vacuum pump casing pipe stress is too large Solution: eliminate stress and manufacturers representatives advice. After eliminating the stress, check the alignment.
4, vacuum pump stuffing box leaks too much bending axis â‘´ Solution: straightening shaft or replacement as required.
⑵ coupling or vacuum pump and drive misalignment Solution: check the alignment, if necessary, re-center.
⑶ bearing lubrication is not correct or bearing wear solution: check and replace as required.
5, the bearing temperature is too high â‘´ axis bending solution: straightening axis or according to the requirements of the replacement.
⑵ coupling or vacuum pump and drive misalignment Solution: check the alignment, if necessary, re-center.
⑶ bearing lubrication is not correct or bearing wear solution: check and replace as required.
â‘· vacuum pump casing pipe stress is too large Solution: eliminate stress and advice to the manufacturer. After eliminating the stress, check the alignment.
⑸ Too much lubricant solution: Remove the plug, so that too much oil is automatically discharged. If it is an oil-lubricated vacuum pump, drain the oil to the correct oil level.
6, stuffing box overheating â‘´ stuffing box stuffing or seal wear, so that air leak into the vacuum pump shell Solution: Check the packing or seal and replace as needed. Check the lubrication is normal.
⑵ stuffing box is not properly filled (insufficient packing, not properly inserted or run together, the packing is too tight)
Solution: Check the packing, packing stuffing.
⑶ packing or mechanical seal design problems Solution: consult the manufacturer.
â‘· mechanical seal damage solution: check and replace as required. Consult the manufacturer.
⑸ sleeve scratches solution: repair, re-machining or replacement as required.
⑹ too tight packing or mechanical seal is not properly adjusted Solution: Check and adjust the packing, according to the requirements of the replacement or adjustment of mechanical seal (reference manual or telephone consultation to our factory ).
7, Rotating parts are difficult to rotate or have a friction â‘´ axis bending solution: alignment axis or as required replacement.
⑵ Wear ring between the running gap is not correct Solution: Check the gap is correct. Replace the wear ring of the vacuum pump housing or impeller as required.
⑶ vacuum pump casing pipe stress is too large Solution: eliminate the stress and consultation on behalf of manufacturers. After eliminating the stress, check the alignment.
â‘· shaft or impeller ring swing too much solution: check the rotating parts and bearings, replace worn or damaged parts as required.
⑸ impeller and vacuum pump housing wear rings between the dirt, vacuum pump housing wear rings in the dirt solution: cleaning and inspection wear ring, according to the requirements of replacement. Cut off and eliminate the source of dirt.
Water ring vacuum pump fault diagnosis and repair skills
In the overhaul process, the diagnosis of water ring vacuum pump fault is a key link, the following is my plant Hu workers given several common faults and solutions for everyone to carry out water ring vacuum pump fault diagnosis, I wish We will soon solve the thorny issue.