durst 138

[ic-racer]

using a lot of sheet stock,
rather than mainly machined components like the classic L184, which I'd rather have (and do have). Hard to tell which plant the later version was built in.

The L1840 column is actually round. The sheetmetal rectangular box is just cosmetic. As is the top hat on the column (which covers the motor). The legs are cast aluminum. The lens stage is cast as well. Many other components are cast. Most of the knobs are molded plastic but some are anodized aluminum.

 

[ic-racer]

Here is the lift mechanism with the side sheetmetal removed.

 

[DREW WILEY]

Thanks for the interior look.

 

[ic-racer]

The center column of L1840 has a cast yoke (seen above) that accepts the worm gear shaft and rides up and down on ball bearings. The motor that drives the worm gear is at the top and this is the main component that requires 240v. The smaller motor for the focus is 24v (post #51). The large hand crank on the side is for the table.

That tube sticking out is for lubrication of the worm gear.

Add a few drops of medium lubricating oil after every hundred adjustments.

 

[DREW WILEY]

Hmmm. The only thing that's 240V on my L184 is the cooling fan. All the motors and colorhead voltage are 115V, specifically equipped for US usage. Of course, I rewired the thing to bypass the old control box entirely. But that didn't really change anything except the need for two outlets instead of just one with a finicky step-down device in between. Old power supplies often just aren't worth fixing or repairing. That's why I personally like the simpler older setups - a person like me can renovate them in my own shop. I once had a 2000W Durst that needed 240V for everything.

 

[ic-racer]

Oh, yes on the CLS head power supplies it is interesting as the both the 1000W and 2000W heads need 240V but the lamp on the 1000V (CLS1840) is a 120V lamp, so the voltage is stepped down for that. I think for my B&W printing, if the power supply failed on the CLS2000, it could be bypassed and a 1000W 120v lamp fits in the socket.