Harvey Alpha Series Table Saws: Dust Collection Requirements and Troubleshooting

Excessive sawdust buildup inside your saw cabinet can be caused by a few different factors. Here's an updated guide to troubleshoot and potentially solve this issue, including the requirement for adequate static pressure:

Possible Causes and Solutions:

1. **Insufficient CFM**:

• Ensure the air flow (CFM) at the hose connection to the cabinet's external dust port is at least 470CFM, as recommended by the manual. Inadequate CFM can lead to poor dust collection.

2. **Static Pressure Requirement**:

• Verify that each dust collector outlet maintains a minimum static pressure of 1100Pa. This level of pressure is necessary to effectively capture and transport dust particles out of the cabinet.

3. **Adjustable Guide Adjustment**:

• Check the adjustable orange guide inside the cabinet designed to direct sawdust towards the dust port. Adjust it to a wider setting to improve its effectiveness at catching debris falling into the cabinet area.

4. **Check for Leaks**:

• Examine the hose connections both inside and outside the cabinet for any leaks that might be reducing suction and efficiency in dust collection.

Measuring Air Flow with An Anemometer:

For a precise check of the airflow, use an anemometer to measure the CFM (Cubic Feet per Minute) at the hose end connected to the saw:

**Setting the Anemometer**:

1. Set the sample area on the anemometer to 0.087 ft^2 for a 4" round pipe. This setting is crucial for accurate measurements.
2. Ensure the anemometer is in FLOW mode and set to measure in CFM, not CMM. Adjust this by pressing the UNIT button if necessary.

**Steps to Calculate Duct Surface Area for Anemometer Setup**:

  1. Measure the diameter of the duct.

  2. Calculate the radius by dividing the diameter by 2.

  3. Square the radius (radius x radius).

  4. Multiply the squared radius by π (approx. 3.14) to find the area in square inches.

  5. Convert the area to square feet by dividing by 144 (since there are 144 square inches in a square foot).

  For example:

• 4" Round Pipe**: The surface area is 0.087 ft^2.
• 3.5" Round Pipe**: Surface area is 0.0667 ft^2.
• 1-3/8" Round Pipe**: Inner diameter surface area is 0.010 ft^2.

Video Tutorials:

Refer to these links for video tutorials on setting up and using an anemometer:

• Anemometer Setup
• Anemometer Test Run

By correctly setting up your anemometer and addressing potential issues with CFM, static pressure, duct adjustment, and sealing leaks, you should see a significant improvement in dust collection performance. If problems persist after these adjustments, it may be helpful to send a photo of an anemometer reading of the CFM at the end of the hose for further diagnosis.