This article details the recommend maintenance for the 10W Laser Unit.
Tools Needed:
- Torx T10-Security tool
- Philips PH1 tool
- Hex 2.5mm tool
- Mascara wand or small stiff bristled brush
Cleaning Frequency:
Maintaining a clean Laser Unit is crucial for cooling as it ensures efficient heat dissipation, preventing the Laser Module from overheating which will drastically degrade performance and lifespan of the Laser Diodes.
The Fan on the Laser Unit should be replaced ever 6-12 months or as required.
The frequency of cleaning will vary based on the usage of the machine. Frequencies listed are intended as a guide only and should be increased/decrease as required.
Note: Compressed air can be used during cleaning. However, the Fan is not rated to spin at high speeds – it is recommended that a small amount of pressure be applied to the Fan hub to prevent or limit rotation. Care should also be take not to force dust into the optics area at the bottom of the Laser Unit.
*** IMPORTANT: Make sure you turn your machine off and unplug the power before proceeding ***
Minor Clean (Weekly – Monthly):
Step 1: With the Emblaser OFF and disconnected, check the state of the Fan at the top of the 10W Laser Unit for any buildup of dust/soot and insure the Fan is able to turn freely with minimal resistance.
Step 2: If required, use a brush to clean the fins and inside walls of the Fan. If there is a significant buildup or the Fan is not turning freely, continue to the Major Clean section.
Note: Compressed air may be used during this step – see note in ‘Cleaning Frequency’ section.
Major Clean (Monthly – Quarterly):
Step 1: With the Emblaser OFF and disconnected, use the Philips PH1 tool to remove the two screws holding the rear laser cover from the laser head.
Note: Be very careful not to place any force on the Flat Flexible Cable (FFC) that connects the Laser Driver PCB to the main Controller PCB.
Step 2: Carefully unplug the Laser Unit and Fan connectors.
Note: The Laser Unit connector has a clip that needs to be depressed for the connector to unplug.
Step 3: Remove the M3x35mm screw from the front of the laser unit using the Hex 2.5mm tool.
Note: We recommend working over a piece of paper towel or similar for the following steps
Step 4: Detach the Fan from the top of the Laser Unit, by loosening the 4x M3x25mm screws using the Hex 2.5mm tool.
Step 5: The Fan on the Laser Unit should be replaced every 6-12 months or if it shows any signs of reduced performance. If replacing the Fan, skip to step 6.
Replacement 10W Laser Unit Fans are available here: Darkly Labs Store – 10W Laser Unit Fan
Keeping the Fan in the upright position (to reduce the amount of dust that enters the Fans bearings/motor), use a brush to clean any soot/dust from the Fan blades and inner walls.
Once compleat, place the clean Fan to one side.
Step 6: Remove the Air Shroud by pulling it upwards from the Laser Unit.
Step 7: Brush off any dust/soot from the top of the Laser Unit. Then carefully clean between the heatsink fins.
Note: A mascara brush, angled at 45º works sell for this.
If required, clean the center cutout of the Heatsink, being carful of the wires and the top of the Laser Module inside the Laser Unit Heatsink.
Step 8: Turn the Laser Unit upside down and gently tap the unit on a flat surface to remove any loose dust/soot.
Note: Compressed air may be used during this step – see note in ‘Cleaning Frequency’ section.
Step 9: Re-insert the Air Shroud and install the Fan.
Step 10: Line up the slot on the side of the Laser Unit with the tab on the Z-Carriage and insure the holes line up. Then, install the M3x35mm screw in the front of the Laser Unit.
Step 11: Re-attach the Fan and Laser connectors to the Laser Driver PCB.
Step 12: Re-install the Cover on the Laser Driver PCB. Make sure the wiring exits the cover as shown below and nothing is obstructing the limit switches.
Step 13: Done!
