frame
Howdy, Stranger!
It looks like you're new here. If you want to get involved, click one of these buttons!
Sign In RegisterHowdy, Stranger!
It looks like you're new here. If you want to get involved, click one of these buttons!
Quick Links
Categories
- 3.7K All Categories
- 1.5K Forum Discussions
- 74 New Here? Drop in and Say Hi.
- 687 Have your say
- 667 Off-topic
- 12 Getting to know some Members - Interviews
- 15 Good Food - Photos & Recipes
- 1K Coffee Making and Equipment
- 550 Espresso Machines
- 64 Other Brewing Methods
- 103 How to improve your coffee
- 147 Grinders
- 72 Projects & Rebuilds
- 79 Accessories
- 601 The Coffee Lounge - cafe culture
- 32 Cafe reviews
- 227 Coffee Roasting and More
- 63 Home roasting - All about the culture
- 62 Roasting - How To do it
- 99 Roasters - Different Roasting Equipment
- 138 Brown & Green Beans
- 58 Green Beans
- 80 Roasted Beans or Blends
- 265 Sponsors & Marketplace
- 49 Site Sponsors
- 8 K_Bean_Coffee
- 2 Bezzera Australia
- 8 Cosmorex Coffee
- 6 Ministry Grounds
- 2 Coffeeparts
- 17 www.beangreen.com.au
- 4 Coffee Curators
- 158 Classified - Members WTB, For Sale or Free to a Good Home.
In this Discussion
After the old forum software breaking in a way that we were unable to fix, we've migrated the site to a new platform.
Some elements aren't working as we'd hoped - some avatars didn't survive the transition, and we're still having issues with attachments that weren't added as inline images, but we're hoping to have that all sorted out soon.
Some elements aren't working as we'd hoped - some avatars didn't survive the transition, and we're still having issues with attachments that weren't added as inline images, but we're hoping to have that all sorted out soon.
Sunbeam EM4800 w/ stiff operating dial
I have a Sunbeam EM4800 - had it for a while and can get reasonable results.
The "operating dial" (the main control - front and centre) has become stiffer and stiffer. Finally got so stiff that I stripped the machine down to investigate. It turns out that the dial rotates some ceramic disks to switch the hot water between the coffee and steam outlets (I guess that this is very similar to the workings of a mixer tap). These disks seem to be coated in some sort of grease - presumably acting as a seal, and maybe as a lubricant. This coating is very viscous causing the stiffness. The disks themselves seem to be in good condition - no obvious scratches or lime scale.
The obvious solution to my problem is to remove the old coating and replace it. I guess removing it will be relatively easy. The big question is what to replace it with? Presumably it needs to be high temperature, and food-safe.
Google "research" has got me nowhere yet.
Am I on the right track?
Any gotchas or hints?
The "operating dial" (the main control - front and centre) has become stiffer and stiffer. Finally got so stiff that I stripped the machine down to investigate. It turns out that the dial rotates some ceramic disks to switch the hot water between the coffee and steam outlets (I guess that this is very similar to the workings of a mixer tap). These disks seem to be coated in some sort of grease - presumably acting as a seal, and maybe as a lubricant. This coating is very viscous causing the stiffness. The disks themselves seem to be in good condition - no obvious scratches or lime scale.
The obvious solution to my problem is to remove the old coating and replace it. I guess removing it will be relatively easy. The big question is what to replace it with? Presumably it needs to be high temperature, and food-safe.
Google "research" has got me nowhere yet.
Am I on the right track?
Any gotchas or hints?
Comments