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Cleaning the Cooling System
NEVER touch or adjust your engraver's water supply while your engraver is still connected to power.
Your coolant tank should be shielded from ambient dust created during work. If your coolant ever becomes
visibly dirty, discontinue work. The debris in the water will reduce its cooling efficiency, can heat up itself,
and can damage the cooling pipes. Remove the right panel following the instructions above and use a
baster or fluid extractor to remove the contaminated coolant. If the coolant is especially polluted, use a
funnel to refill the tank place with clean water, return the engraver to working order, run the system for a
few minutes, and then immediately extract the water again to remove other impurities from the line. Use
a funnel to refill the tank with clean distilled water or laser-safe coolant, reseal the tank, restore the right
panel, and resume use.
If your coolant remains visibly clean at all times, it is still recommended that you clean the water tank at
least once a year as a precaution, replacing the fluid as you do so.
5.3 Cooling System Maintenance
NEVER touch or adjust your engraver's water supply while your engraver is still connected to power.
In addition to the regular cleaning above, check that the tank is at least two-thirds full of coolant or clean
water before and after each use. If the tank ever begins to run low, use a funnel and tube to add more
distilled water or laser-safe coolant or remove the right panel and add the fluid directly with a funnel.
5.4 Laser Path Alignment
The Polar 350 goes through a complete beam alignment before shipping and its design should keep your
mirrors locked into their proper positions at all times. If you wish to test the alignment by using the laser
to mark pieces of tape along its path to your material, remember to never place the tape directly on any
mirrors or lenses; to never use power levels above 15% to mark the tape; and to never disable the cover’s
interlock switches during your testing.
If you ever find that your mirrors are out of alignment, contact our technical support team to correct the
problem.
5.5 Rail Lubrication
For best results, clean and lubricate the engraver’s guide rails every two weeks. Turn off the laser engraver.
Gently move the laser head out of the way. Wipe away all dust and debris along the X and Y axis rails with
a dry cotton cloth until they are shiny and clean. Do the same to the Z axis screws. Lubricate both the rails
and screws with white lithium grease. Gently move the laser head and X axis to distribute the lubricant
evenly along both rails and raise and lower the bed to distribute the lubricant evenly along the screws.
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