Service Procedures for the PCBs and Related Components
11 8 810440 Service Parts and Procedures Powermax65/85 SYNC
How to clean the heatsink and apply thermal grease to the heatsink components
Remove the grease from the heatsink
1. Put a small amount of isopropyl alcohol onto a paper towel.
2. Clean the grease off of the heatsink with the paper towel. Make sure that there is no grease or
other debris on the heatsink.
3. Dry the heatsink with a lint-free cloth. Make sure that there is no debris from the towel on the
heatsink. The heatsink must be completely dry before you install a heatsink component.
Apply the grease to the heatsink component
1. Use a small plastic scraper to put a small amount of thermal grease onto the rear of the new
heatsink component.
2. Use the plastic scraper to apply a very thin layer of grease to every edge of the heatsink
component. Make sure that the grease is spread evenly. If necessary, use something more
flexible to apply a smooth, level layer of grease, such as a credit card or an index card.
3. Clean the screw holes of the heatsink component with a cotton swab.
4. Use a paper towel with isopropyl alcohol to clean any unwanted grease from the edges of the
heatsink component. The thermal grease must only be on the rear of the heatsink component.
NOTICE
Only use the thermal grease that is supplied by Hypertherm.
The amount of thermal grease that is supplied is enough for many heatsink components. Do not use a
full container of thermal grease on a single heatsink component.
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