Differences

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--- log [2025/07/09 12:28] – astroadmin
+++ log [2025/09/05 17:47] (current) – astroadmin
@@ Line 12: / Line 12: @@
 == Log ==
+/5/25 : Zach just went up to check on lube used for the RA drive. We have ben using Ultra Lube Moly EP Grease. Almost gone. But we have a full tub of MAG1 Moly Grease (Extreme Pressure).
+/25/25 : installed new [[https://www.grainger.com/product/OMRON-Limit-Switch-Head-Cross-Roller-2CLX3|trigger]] for open dome limit switch that had previously broken off. Installed new torque limited coupler (see below) between motor and gear box, left if set at lowest torque setting which still allows slit to move, but slips even with relatively small counter-pressure on the slit. Slit still seems to move irregularly and as a result causes torque limiter to slip at some points. Also slit seems to have been moved (probably from last month's repair) such that the closed limit switch is never reached. Hypothesis is that cables need to be loosened, slit shifted to correct left/right positioning, then retightened. Put in work order to F&S to bring ladders, etc to accomplish this and also to lubricate the slit bearing and hopefully allow for smoother motion.
+The torque limiter consists of 3 parts:
+  - https://www.mcmaster.com/4404N15/
+  - https://www.mcmaster.com/4404N27-4404N272/
+  - https://www.mcmaster.com/9939T14/
 /5/25 : See [[sumjulyevent|Report of July 5th, 2025 events resulting in critical failure]]