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Analysis and maintenance of common faults of vacuum unit equipment

2019-11-11 11:09  Times of view:

Common failures that occur in vacuum units:

1.Vibration

2. The bearing part generates a large amount of heat

3. The sound of the operation is obviously abnormal.

4. Startup difficulties, motor trip or over current

5. The amount of inhalation decreased significantly

6. Card death

The cause of the above problem and the solution

1. Large vibration reasons:

1.1. The base is not stable with the ground and the anchor bolts are loose.

1.2. Bad alignment.

Approach:

1.1. Fill the gap of the base with concrete and tighten the anchor bolts;

Zunhua Baorui Titanium Equipment

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1.2. Realign and lock.

2. The bearing part generates a large amount of heat

1.1. Lubrication problems, too much or no grease.

1.2. The motor and liquid ring vacuum pump are misaligned.

1.3. The bearing is rusted and the raceway is scratched.

1.4. Improper installation of the bearing.

Solution:

1.1. Improve lubrication conditions;

1.2. Realignment;

1.3. Replace the bearing;

1.4. Re-adjust the bearing position.

3. The operation sound is abnormal.

1.1. Bearing problems.

Zunhua Baorui Titanium Equipment

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1.2. Gas flushing or spraying.

1.3. Exhaust, suction pipe wall is too thin.

Approach:

1.1. Check the bearing for damage, replace the bearing or lubricating oil;

1.2. Take the exhaust port out of the room;

1.3. Replace the thicker pipe of the pipe wall.

4. Startup difficulties, motor trip or over current

1.1. The inside of the pump is frozen or several pieces of rust inside;

1.2. The liquid level in the liquid ring vacuum pump is too high at startup;

1.3. Exclude pressure increase;

1.4. Improper adjustment of the power distribution screen current protection.

Processing method:

1.1. Steam heating and melting ice; force the rotor;

Zunhua Baorui Titanium Equipment

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1.2. Start according to the specified liquid level;

1.3. Check if the exhaust pipe and valve diameter are too small;

1.4. Adjust the thermal relay to the rated value.

5. Inhalation drop

1.1. System leaks ‘

1.2. The flexible valve plate is damaged;

1.3. Insufficient liquid supply or high liquid temperature;

1.4. The internal parts have large gaps and the parts are corroded;

1.5. The axial clearance does not meet the requirements.

Processing method:

1.1. Check the tightness of the link line;

1.2. Replace the valve plate;

1.3. Adjust the liquid supply volume and check whether the liquid supply pipeline is blocked.

Zunhua Baorui Titanium Equipment

vacuum coating machine,pvd coating machine,pvd vacuum machine,vacuum ion coating machine,multi-arc ion coating machine

1.4. Adjust the axial clearance;

1.5. Replace parts.

6. Card death

1.1. The foreign matter in the pipeline is carried into the pump body by the gas;

1.2. Severe scaling.

Approach:

1.1. Clean the pump body and check the pipeline.

1.2. Cleaning.

Maintenance of the vacuum unit:

For the vacuum unit of the vacuum equipment, every 2,500 hours of operation, it is necessary to check and replace the bearing lubricant once, and the amount of grease should account for about two-thirds of the net space of the bearing chamber.

The tension of the coupling bolts should be checked once every three months to check the tightness of the anchor bolts.

Check the Y-filter on the working fluid circulation line for three months to avoid clogging.

Check the filter of the heat exchanger cooling water line once a year to avoid rust and corrosion.

That is to say, basically three months need to be maintained to maintain the normal operation of the machine.

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