CW5000 chiller clogged up with green sludge

Hardware settings, adjustments and fixes and other hardware discussion. This includes the "doHICky" Laser Power measurement system by Russ.
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Steve Bird
Posts: 3
Joined: Sat Jan 08, 2022 3:33 pm
Location: Greensboro, North Carolina
Country: USA
Nickname: Steve
Laser Machine Make or Type: Red and Black Chinese
Laser Power: 90W
Laser Bed Size: 36"x24"
Home Position: BR
Control Software: LIGHTBURN
RDWorks Version: n/a
Ruida Controller: RDC6445
Windows Version: n/a

CW5000 chiller clogged up with green sludge

Post by Steve Bird »

Our CW5000 water chiller cut out in the middle of a laser session today. Turns out it was clogged up with organic sludge—presumably algae. I’ve found some good suggestions on additives to use going forward to keep this from happening again (mainly a few drops of aquarium algae inhibitor) but I have not found good suggestions from reliable sources on what to do to flush out the current gunk from the system. Some have suggested vinegar & water at 1:1 and circulate it through for several hours before flushing with water. I’ve seen other suggestions as well, but I don’t trust them without more info. I’m leaning toward just running the chiller with tap water going directly in and the outlet directly into the drain, though that wouldn’t do anything for any sludge in the rest of the system. Any suggestions from the group? Thanks!
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Pete Cyr
Posts: 1913
Joined: Sun Nov 27, 2016 5:16 pm
Location: Suffolk Virginia
Country: United States
Laser Machine Make or Type: Boss 1630
Laser Power: 100w
Laser Bed Size: 16"x30"
Home Position: TR
Control Software: RDWORKS
RDWorks Version: v8.01.18
Ruida Controller: RDC6442
Accessories: roller rotary attachment
Windows Version: Win 10

Re: CW5000 chiller clogged up with green sludge

Post by Pete Cyr »

You will also need to flush you water flow detector if you haven't already- typically an inline plastic fitting with an wire connection.
After you flush your system - a cup or so of RV antifreeze will keep that from recurring.
Location - VA
Equipment - Boss Laser 1630
Power - 100W
Laser Bed Size - 16" x 30"
Home Position - TR
Full RDWorks Version - v8.01.18
First name - Pete
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