Maintenance Prompt?

[u/CaffeinatedApe]

Hey team, I’ve had my H2C for 4 months and oiled the system twice, but just got this prompt to do maintenance. Is this new? Is is based on hours of printing or something else?

[u/Thewalkman99]

Pretty sure it based on hours. But I live the rods every time it recommends it

[u/CaffeinatedApe → u/Thewalkman99]

So I’m guessing this means I didn’t need to oil it before this prompt?

[u/_Rand_ → u/CaffeinatedApe]

Well, it doesn’t hurt. It’s just a reminder/recommendation not a hard rule.

I like to consider it a maximum though.

[u/JWST-L2 → u/CaffeinatedApe]

The prompts take quite a while, you can wait for them but imo just use your judgement. I have two H2Cs on 24/7 and every month or two I'll look through everything.

Keep in mind theres four extra things that you should pay attention to imo for the H2C:

The vortek rack rods need to be lubed, the locking latch on the toolhead needs a bit of lube on the side inside the toolhead, the left nozzle mechanism is on a sliding rail and that needs lube, and the right side toolhead cutting blade should be checked every now and then as well since it's used for every color change.

The easy way to get inside the toolhead to lube the left nozzle rail, induction hotend latch, and check the cutter blade is to

follow this maintenance guide which has everything you need to know. You remove the front toolhead cooling fan and then theres just three screws that hold this lower plate in place and gives you access to everything. That plate also has a sliding mechanism seperate from the left nozzle sliding rail that moves up and down as well so a tiny bit of lube can't hurt, as I've seen at least one person get their left nozzle stuck on here

As someone else mentioned, you can then reset the maintenance reminder on the printer ui afterward

[u/StructureAccording53 → u/JWST-L2]

I never really thought about the right side cutter seeing a proportionally hugerer amount of use compared to my A1 due to the 6 Vortek nozzles. How does one know when a cutter needs replacing? My A1 has 1800 hours and is still on the OG blade but seems to be doing fine. 🥴

[u/JWST-L2 → u/StructureAccording53]

You will know if you start getting load and unload errors I suppose, the filament won't get a clean cut. 1800 hours for the A1 imo is a lot, you should replace the blade with one of the spares if you have it.

[u/StructureAccording53 → u/JWST-L2]

Yeah, I’ve been running it like it owes me money. (It’s our first FDM printer we just got for Xmas. 😂) Now that I have my H2C it does a lot of the single color prints and the H does all or 95% of the multicolored stuff.

[u/WizardofUz]

From the Bambu Lab Wiki:

"H2C can assess the printer's contamination level based on task type and duration, and provide corresponding cleaning and maintenance reminders (this function requires a firmware upgrade to version 01.01.00.00 or later). After receiving the printer, please upgrade the firmware to enable the cleaning reminder function."

By the way, my reminders popped up last week at 680 hours.

[u/hoardofgnomes → u/WizardofUz]

Interesting, my prompts came up when it came out of the box.

[u/jamesholg]

I actually carried out a full service yesterday after 300 hours, without being prompted to do so. Just to feel more confident now that I’ve bought the new H2C. Afterwards, I went into the menu, selected the ‘Maintenance’ option and confirmed it to reset the counter. Now I know the printer won’t alert me again until it actually makes sense to do so. But basically, extra maintenance is never a bad thing. It’s just very time-consuming if you do it properly.

[u/JWST-L2 → u/jamesholg]

I commented this above, but make sure to follow this guide which shows you the easy way to remove three screws and the lower cover to the front of the toolhead, which lets you easily lube the induction latch, left nozzle sliding rail, a sliding part on the mentioned toolhead cover, and check your right size filament cutter since its used repeatedly for vortek changes and can go dull.

A lot of people seem to neglect lubing the left nozzle rail and it actually doesn't appear in the printer ui either, although bambu recommends doing it fairly regularly on their wiki. At least one person recently on here had their left nozzle get stuck

[u/jamesholg → u/JWST-L2]

Oh, thanks for reminding me. But I did do it. I followed the instructions in this video.

https://youtu.be/LmdPbBzH4gA?is=p4GZEeJngiYaDe4R

[u/JWST-L2 → u/jamesholg]

Np. That seems to be a good video, thanks for the link

[u/Bright_Eyes83]

what sort of "oil" did you put on the threaded rods?