Jura Complete Maintenance & Cleaning Guide (E6, E8, S8, Z10 — Full Schedule)

A Jura Tells You When It Needs Maintenance

Jura maintenance splits in two. The daily jobs are yours: empty the drip tray and grounds container, rinse the water tank, and clean the milk system after milk drinks. The big programs are the machine's call. It asks for cleaning after 180 preparations or 80 switch-on rinses, for a new filter when the cartridge is used up, and for descaling only when scale builds up.

With a CLEARYL Smart filter fitted, an E6, E8, S8, Z6 or Z10 never asks for descaling at all.

That's why a fixed "descale every 3 months" calendar doesn't fit these machines. How often each program comes due depends on how much coffee you make and the water hardness you set. Run each one when the display asks, with JURA's own product, and let it finish.

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The Four JURA Products

The US manuals for these models use CLEARYL Smart (E8: Smart+) cartridges. The machine detects the cartridge automatically and tells you when to change it.

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Step 1: Do the Daily Routine

JURA's maintenance table lists these as daily jobs:

1. Empty the drip tray and coffee grounds container, and rinse them with warm water. The table lists the tray, its insert and the grounds container as dishwasher-safe. Always empty the grounds container with the machine switched on, because that's the only way to reset the grounds counter.
2. Clean the milk system if you've made milk drinks (Step 3).
3. Rinse the milk pipe.
4. Rinse the water tank and refill it with fresh, cold water. JURA recommends changing the water daily.

Time: 3-5 minutes
Cost: Free
Difficulty: Easy

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Step 2: Do the As-Needed Jobs

These are in the same table under "if necessary":

1. Wipe the machine's surface with a clean, soft, damp cloth, such as microfiber.
2. Brush the inside of the water tank.
3. Clean the top and bottom of the cup platform.
4. Clean the drip tray and grounds container thoroughly.
5. Clean the bean container from time to time with a soft, dry cloth, with the machine off. JURA notes that coffee oil left on the walls can affect the taste.
6. E8 only: change the HP3 milk pipe and the CX3 interchangeable milk spout about every 3 months.

Never use scouring powders or hard implements.

Time: 10 minutes
Cost: Free (milk parts extra on the E8)
Difficulty: Easy

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Step 3: Clean the Milk System Daily

After each milk drink, the machine rinses the milk system, automatically or when you start it, depending on the setting. The daily clean is separate, and JURA says it's needed "to make sure it functions perfectly and also in the interests of hygiene".

1. When "Clean the milk system" appears, start it from the maintenance area.
2. Pour one dose of JURA milk system cleaner into the supplied cleaning container.
3. Place the container under the milk spout (and the hot-water nozzle, on the E8) and connect the milk pipe to it.
4. Press Next. The cleaning stops by itself.
5. If foam is poor or milk sprays out, take the frother (or the Z6/Z10 dual spout's milk system) apart and rinse every part under running water. Soak dried-on milk first in 8.5 oz (250 ml) of water with one dose of cleaner.
6. Reassemble firmly. Loose parts are what make a frother spray.

Time: 5 minutes (15 minutes with dismantling)
Cost: JURA milk system cleaner
Difficulty: Easy

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Step 4: Run the Cleaning Program When Asked

After 180 preparations or 80 switch-on rinses, the display shows "Clean" or "Clean machine". The program takes about 20 minutes and shouldn't be interrupted. JURA says stopping it impairs the cleaning.

1. Start it from the maintenance area and press Start.
2. Empty the drip tray and grounds container when asked.
3. Place receptacles under the coffee spout and the milk spout (the dual spout on the Z6 and Z10), then press Next.
4. At "Add cleaning tablet", open the cover of the filler funnel for ground coffee and drop in one JURA cleaning tablet. Close the cover and press Next.
5. Water runs out repeatedly. Empty the tray and grounds container again at the end.

Water on the cup platform during a program is expected. The Jura leaking guide explains where each program sends it.

Time: About 20 minutes
Cost: One JURA cleaning tablet
Difficulty: Easy

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Step 5: Change the CLEARYL Filter When Asked

When the filter cartridge stops working, the filter symbol turns red, or "Change filter" appears. How long a cartridge lasts depends on the water hardness setting.

1. Remove and empty the water tank.
2. Turn the old cartridge anticlockwise to remove it (with its extension, on the E8).
3. Fit the extension to the new cartridge if yours has one, insert it and turn it clockwise until it clicks.
4. Fill the tank with fresh, cold water and refit it.
5. The machine detects the cartridge and rinses it, and that water goes straight into the drip tray. Empty the tray afterwards.

Time: 5 minutes
Cost: A CLEARYL Smart cartridge
Difficulty: Easy

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Step 6: Descale When Asked (Only Without a Filter)

Without a CLEARYL filter, the machine asks for descaling when scale builds up, and how often depends on your water hardness setting. Don't interrupt descaling. JURA warns that stopping it may damage the machine.

1. Start "Descale" from the maintenance area. Empty the drip tray and grounds container.
2. Dissolve 3 JURA descaling tablets completely in 17 oz (500 ml) of water. On the Z10, use 20 oz (600 ml). Pour the solution into the empty tank.
3. Put receptacles under the hot-water nozzle and the milk spout, and press Next.
4. Empty the tray and receptacles whenever asked, rinse the tank thoroughly, and refill it with fresh water for the rinse stage.
5. The program takes about 40 minutes on the E6 and E8, and about 45 on the S8, Z6 and Z10.

If it stops unexpectedly, rinse the water tank thoroughly. Afterwards, if the milk spout gives little steam and the pump sounds very quiet, limescale loosened by descaling may be blocking its connector. The fix is in the FAQ.

Time: 40-45 minutes
Cost: 3 JURA descaling tablets
Difficulty: Easy

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Step 7: Descale the Water Tank Now and Then

Scale also builds up in the tank itself. Every manual suggests descaling it from time to time, and some use it to fix a wrong water message. On the E6, Z6 and Z10, "Fill water tank" failing to appear with an empty tank means limescale in the tank. On the S8, the message appearing with a full tank means the float is trapped.

1. Remove the tank, and take out the CLEARYL filter if one is fitted.
2. Fill the tank completely and dissolve 3 JURA descaling tablets in it.
3. Leave it for several hours, overnight for example.
4. Empty it, rinse it thoroughly, refit the filter, and refill with fresh, cold water.

Time: Overnight
Cost: 3 JURA descaling tablets
Difficulty: Easy

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Model-Specific Notes

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What Skipping Maintenance Causes

These are the manuals' own troubleshooting rows that trace back to maintenance:

• Coffee only comes out in drips: grind too fine, or the water hardness isn't set correctly and the machine needs descaling.
• Poor foam, or milk spraying from the spout: a dirty frother or dual spout.
• Little or no steam from the milk spout, with a very quiet pump: the connector is blocked by milk residue or limescale.
• Wrong "Fill water tank" behavior: limescale or a trapped float in the tank.

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FAQ

My Jura asks for maintenance again soon after I ran a cycle. Is something wrong?

Probably not. Each program has its own trigger. Cleaning comes after 180 preparations or 80 switch-on rinses, the filter change when the cartridge is used up, and descaling depends on scale and the water hardness you set. A busy machine or hard water brings them around faster.

Can I use generic cleaning or descaling tablets?

JURA says no. Its manuals call for original JURA cleaning tablets, descaling tablets and milk system cleaner, and warn that other products, vinegar included, can damage the machine or leave residue.

How do I know when the CLEARYL filter is used up?

The machine tells you. The filter symbol turns red, or "Change filter" appears. Timing depends on the water hardness setting, so there's no fixed interval to count.

My Jura shows an error after cleaning. What does it mean?

The manuals define only Error 2 and Error 5, both meaning the machine got too cold and heating was disabled. For any other "Error" message, JURA says to switch off and contact customer support (US 1-800-220-5701). The manuals describe no "Brew Unit" message, and no owner access to the brewing unit.

How do I fix weak steam from the milk spout after descaling?

Remove the frother (or, on the Z10, lift off the dual spout's cover and take out the milk system). Unscrew the black connector using the hexagonal hole in the ground-coffee measuring spoon, clean it thoroughly and screw it back on by hand. On the Z10, tighten it by no more than a quarter turn with the spoon.

Should I leave my Jura on standby or switch it off?

Either works. It switches itself off after the time you set: 15 or 30 minutes, or 1 to 9 hours on the E6, E8 and Z10. Each switch-on runs a rinse, and 80 of those count toward the cleaning prompt.

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Related Jura Guides

• Jura descaling guide
• Jura leaking water
• Jura won't turn on
• Jura milk frother not working
• Jura complete troubleshooting guide

Sources: JURA Instructions for Use for the E6 (NAC), E8 (NAC), S8, Z6 and Z10 (NAA), US editions.