The SMC Mist Separator, detailed in this operation manual (Document No.: AMX-OMX0019-B), is a device designed to remove oil mist and solid foreign matter from compressed air lines. It is available in three main models: AM20, AM30, and AM40, each with variations in port size and other specifications.
Function Description
The primary function of the Mist Separator is to purify compressed air by removing fine oil mist and solid particles. This is crucial for maintaining the quality of air in pneumatic systems, preventing contamination of downstream equipment, and ensuring efficient operation. The device works by separating these contaminants from the air stream, typically through a combination of centrifugal force and filtration. The separated mist and particles are then collected in a bowl, which can be drained either manually or automatically.
Important Technical Specifications
The AM20, AM30, and AM40 models share several common characteristics but differ in their capacity and port sizes.
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Port Size:
- AM20: 1/8, 1/4
- AM30: 1/4, 3/8
- AM40: 1/4, 3/8, 1/2
These port sizes indicate the connection dimensions for the air line.
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Fluid: Air is the specified fluid for operation.
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Ambient and Fluid Temperature: The device operates within a range of -5 to 60°C (No freezing).
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Proof Pressure: All models have a proof pressure of 1.5 MPa.
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Max. Operating Pressure:
- AM20, AM30: 1.0 MPa
- AM40: 0.05 MPa (This seems to be a typo in the document, as it's significantly lower than other models and typical pneumatic systems. It's likely intended to be 1.0 MPa or similar to the other models, or refers to a specific low-pressure application.)
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Min. Operating Pressure:
- N.C. (Normally Closed) type: 0.1 MPa for AM20, 0.15 MPa for AM30, and 0.1 MPa for AM40.
- N.O. (Normally Open) type: - (not specified, likely similar to N.C. or specific to auto drain function).
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Nominal Filtration Rating: 0.1 µm (99% filtered particle size), indicating a high level of filtration efficiency.
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Outlet Side Oil Mist Concentration: Max. 1.0 mg/m³(ANR) for all models, ensuring very clean air output.
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Max. Flow Capacity:
- AM20: 300 L/min (ANR)
- AM30: 750 L/min (ANR)
- AM40: 1500 L/min (ANR)
These values represent the maximum air flow the separator can handle.
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Compressed Air Purity Class: ISO8573-1: 2010[2: 7: 3] for all models, signifying the quality of air produced in terms of solid particles, water, and oil.
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Drain Capacity:
- AM20: 8 cm³
- AM30: 25 cm³
- AM40: 45 cm³
This refers to the volume of collected condensate the bowl can hold.
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Bowl Material: Polycarbonate for all models.
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Bowl Guard: Semi-standard (Steel) and Standard (Polycarbonate) options are available.
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Weight:
- AM20: 0.19 kg
- AM30: 0.39 kg
- AM40: 0.79 kg
The manual also details various options for port size (1/8, 1/4, 3/8, 1/2), mounting (without mounting option, with bracket), drain type (float type auto drain, N.C. (Normally Closed), N.O. (Normally Open), manual drain cock), bowl material (metal bowl, nylon bowl, metal bowl with level gauge, with bowl guard, with bowl guard (Nylon bowl)), drain port (drain guide 1/8, 1/4, 3/8, with drain cock and barb fitting), flow direction (right to left, left to right), pressure unit (MPa, psi), and temperature unit (°C, °F).
Usage Features
The Mist Separator is designed for ease of installation and operation.
- Mounting: Brackets (A and B) are available for secure mounting. Bracket A engages with a groove and the bottom of the body, while Bracket B is fixed with set screws. Proper tightening torque is specified for each model (0.75+/-0.2 N·m for AM20, AM30, AM40).
- Drain Discharge: The device offers both manual and auto drain options.
- Manual Drain: To discharge, the drain cock is rotated to the "OPEN" position. Care must be taken not to damage the product by over-tightening.
- Auto Drain: The auto drain mechanism automatically discharges collected condensate when a certain level is reached or pressure drops. It's important to ensure the auto drain is operating correctly and not clogged.
- Flow Direction: The device can be configured for air flow from right to left or left to right, providing flexibility in system integration.
- Pressure Management: It's crucial to pressurize the inside of the air filter when discharging drain to prevent damage.
Maintenance Features
Regular maintenance is essential for the longevity and optimal performance of the Mist Separator.
- Element Replacement: The filter element is a consumable part and needs periodic replacement.
- For AM20, the element is removed by pulling it upward after loosening the joint with a hook spanner. Reassembly involves aligning arrow marks and recessed areas, pressing the element downward, and then tightening the bowl assembly to a specified torque (3.5 N·m).
- For AM30/AM40, the process involves rotating the joint 30 degrees while holding the lock button, then pulling the element upward. Reassembly requires aligning mating marks, mounting the body and joint, and rotating the joint 30 degrees until the lock button meets the body groove. A caution is given to ensure the lock button is locked before pressurizing.
- Bowl Disassembly/Assembly:
- For AM20, the bowl assembly is removed by loosening it with a hook spanner. Reassembly involves screwing the bowl assembly into the product and tightening it to a specified torque (2.2 N·m).
- For AM30/AM40, the bowl is removed by rotating it 30 degrees while holding the lock button and pulling it downward. Assembly involves mounting the bowl at the mating mark, rotating it 30 degrees, and ensuring the lock button is locked before pressurizing.
- Cleaning: The manual emphasizes using clean air and avoiding organic solvents, synthetic oil, or corrosive liquids for cleaning, as these can cause damage. The refrigerated air dryer or aftercooler before the line filter should be maintained to prevent moisture accumulation.
- Pressure Monitoring: It is important to ensure that the supply pressure is not below the minimum operating pressure. If it is, pressure resistance increases, leading to a decrease in operation life or performance failure.
- Troubleshooting: The manual provides a comprehensive troubleshooting guide for common problems such as air leaks, air leakage from the drain cock, low supply pressure, and drain not discharging. Solutions include replacing elements, bowls, or drain cocks, checking minimum operating pressure, and ensuring proper installation.
- Periodic Checks: Regular checks for cracks, flaws, or other deterioration on the resin bowl are recommended. If any are seen, the bowl should be replaced.
- Drain Level: For auto drain models, check the drain level regularly. If there is no pressure, the condensate will not operate the auto drain mechanism and will remain in the bowl. It is recommended to release residual condensate manually at the end of the working day.
The device is designed for industrial use, and adherence to safety instructions, including proper installation, maintenance, and handling of chemicals, is paramount to ensure safe and effective operation. The manual also includes warnings regarding potential hazards such as high-level potential energy, chemical exposure, and improper assembly.
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