ULVAC TM201 (01) PDF MANUAL

ULVAC TM201 (01) PDF SUMMARY:

Before using the trap, what should I do?

To ensure safety, upon receiving the trap, confirm that it matches the details of your order and has not been damaged in transit or for another reason. Read the instruction manual in advance to properly use this trap. Install and operate this trap according to the safety-related laws and regulations in your country or region. To this end, you must first attend a publicly recognized general safety training (including on electrical and loading safety topics) in your country or region. Never handle this trap without first undergoing safety training. The operator must attend such training and must have expertise, skills, and certifications related to electricity, machinery, loading, vacuum usage, and other fields. Before installing or removing this trap, separate all energy sources (including power and cooling water) from the product.

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What should I check upon unpacking the oil mist trap?

• Is the unit the correct model you ordered?
• Are accessories (instruction manual, parts you ordered) supplied with the unit?
• Is any part damaged or missing and any screw or nut loosened in transit?

If you find any problem, contact your local ULVAC organization or representative.

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How do I mount the oil mist trap on the pump?

1. Verify that the exhaust port, O-ring groove and oil mist trap ™ flange are free from scars and dust.
2. Mount the O-ring (V55) to the exhaust port of the pump and tighten the TM flange using an Allen screw (M8).

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What options are available for duct piping?

The exhaust port of the oil mist trap has a cap as standard, but has a flange (RF-11) for duct piping as an option.

Cautions for duct piping:

• The flange for the duct piping (RF-11) is equivalent to VG40.
• When ducting, be careful not to put too much force on the main body of the trap, as too much force may damage the trap.

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How should I treat the trapped oil?

The TM201/401 is designed to discharge the trapped oil to the outside through the oil return port. Recover the discharged oil in a container and return it to the pump when the pump is operated under no load or at stop.

When should I NOT return the oil to the pump?

• If the oiliness of the recovered oil is lower than the new oil used in the pump.
• If the oil contains water, dust or the like.
• If chemicals like acid are used.

It can be a cause of trouble of the pump.

Cautions for treating trapped oil:

• If you do not dispose of the trapped oil, oil will stay between the fitter element and the oil mist trap and oil mist will come out.
• It is recommended to replace a filter element once immersed in oil because clogging tends to occur.
• Do not connect the oil return port and the pressure monitor mounting port by means of a vinyl hose or the like, as oil mist will not be trapped.

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What is the oil return mechanism?

Oil return mechanism is designed to return the trapped oil in the oil mist trap to the pump. 3 models of oil return mechanism are available according to the operating pressure and conditions.

What are the different Oil return mechanism models?

• Oil return mechanism A: Oil returns into the pump case through the oil filling plug. The oil back to the oil mist trap is prevented by the check valve.

  • Caution: The oil doesn’t return to the pump when the gas flows in the pump case, only when the pump is operated under no load or at stop.

• Oil return mechanism B: Oil returns into the pump compression process through the gas ballast port.

  • Caution: Oil return mechanism B shall cause to rise the ultimate pressure. The gas ballast cannot be performed unless the oil is completely recovered since using the gas ballast port. On the other hand, the ability of oil returns is reduced because the pump compression process time is increased for the operation under the high pressure.

• Oil return mechanism C: Oil returns into the inlet port.

  • Caution: At the oil recovery, Oil return mechanism C causes to rise the ultimate pressure because the same as a leak at the inlet port.

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How do I perform scheduled inspections?

Periodically measure the pressure in the pump with the optional pressure monitor mounted to the pressure monitor mounting port. Verify that the pressure at start of the oil sealed rotary vacuum pump or immediately after evacuation of the vacuum chamber from atmospheric pressure is 0.03 MPa (0.3 kg/cm2) (gauge pressure). If it is always higher than 0.03 MPa (0.3 kg/cm2) (gauge pressure), it is necessary to replace the filter element and check the pressure relief valve.

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When should I replace the filter element?

If the filter element is clogged, replace it, as a rule.

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How do I remove the filter element?

1. Stop the pump or put the pump under no-load operating condition and loosen the Allen screw (M8) that fixes the oil mist trap to the pump to remove the oil mist trap. (If piping is connected to the exhaust side, remove it.)
2. Loosen the hex nut (M10) at the center of the exhaust port to remove the flange.
3. Loosen the hex nut (M10) to remove the parts of the pressure relief valve.
4. Loosen the spacer nut to remove the filter keep plate.
5. Remove the filter element.

Cautions:

• Before replacing the filter element, check if the interior of the oil mist trap or the pressure relief valve is contaminated with dust or foreign matter. If so, remove it by cleaning.
• The seal washer can not be reused.

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How do I reassemble the filter element?

1. Ensure that the mounting surface of the filter element in the oil mist trap is free from foreign matter and scars.

2. Mount the filter element in the oil mist trap.

3. Mount the filter keep plate in position.

4. Mount the seal washer (M10) and fix the filter element using the spacer nut. Tighten with torque 20 N･m.

5. Mount the parts of pressure relief valve.

   • Caution: Tighten the hex nut (M10) until it comes into contact with the spacer nut. Tighten with torque 4.4 N･m. (The pressure relief valve is activated at a pressure below 0.03 MPa (0.3 kg/cm2) (gauge Pressure).

6. Mount the O-ring in the O-ring groove of the oil mist trap. (Apply a thin uniform coat of vacuum grease until the luster of the O-ring surface changes.)

7. Mount the flange in position and tighten it with the hex nut (M10). Tighten with torque 20 N･m.

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What precautions should I take regarding the filter element?

Clogging of the filter element will raise the pressure in the pump and may damage the pump parts or the filter element. Therefore, when using the filter element in the following application, be sure to mount a pressure monitor (optional) to monitor the pressure:

1. When the pump is used for continuous evacuation at a high suction pressure or continuous pumping of high temperature gas.
2. When the pump is used to pump liquid with high viscosity or fine powder at ambient temperature.
3. When reaction products are generated.

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What happens if the pressure relief valve is activated?

If this valve is activated, the oil mist discharged from the pump will not be trapped by the filter element, but will be discharged directly through the exhaust port of the oil mist trap. If this happens, replace the filter element with a new one.

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What should I do when the pump is used continuously at high intake pressure?

If the pump is operated continuously at a high intake pressure (10,000 Pa or more) for an extended time, the pump temperature will rise and the oil viscosity will lower. This increases the amount of oil mist (including fine oil drops) discharged through the exhaust port of the pump and tends to clog the fitter element.

If the filter element is clogged and the pressure in the pump exceeds the maximum continuous operating pressure of 0.03 MPa (0.3 kg/cm2) (gauge pressure), the pressure relief valve will operate to lower the internal pressure, but it is necessary to replace the filter element. If it is necessary to replace the filter element frequently, the use of an oil mist trap one class larger than the current one is recommended.

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When using Oil Mist Trap for a Pump that exceeds Maximum

Do not operate the pump continuously at a high intake pressure of 10,000 Pa or more when the TM201 is used for a pump with a throughput of 20 m3/h or more (30 m3/h, 40 m3/h) or when the TM401 is used for a pump with a throughput of 40 m3/h or more (60 m3/h, 80 m3/h). The pressure relief valve will operate and oil mist be generated even with a new filter element. Also the life of the filter element will be extremely shortened.

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What checkup should I do after storing the pump for a long period?

Long term storage of the vacuum pump without operation might possibly cause trouble in operation caused by rust, degradation of rubber and stickiness of rubber. If you kept the pump long time without operating it, ask a closest Service Center for the check.