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WPM KD-330 maintenance: what the manual says

WPM’s manual lists 7 maintenance jobs for the KD-330. Each is below with how often and the sentence it comes from.

What to do, and how often

Job How often The manual’s sentence
Backflush (detergent) When CO CLEAN shows at the preset water usage (50 / 100 / 180 L, user-set)

“Place the cleaning disc in the handle with appropriate amount of cleaning powder.”
Portafilter & basket soak No interval given

“Soak the filters and the group handle in this solution for about 2 hours.”
Drip tray empty & clean At regular intervals

“Remove the drip tray at regular intervals to make the drip tray empty.”
Group head wipe / flush Once a day, and after more than 8 hours unused

“When the machine has not been used for more than 8 hours, and in any case once a day, the internal components must be washed before use, in accordance to the following instructions:”
Professional service Any maintenance beyond cleaning

“For safety reasons, avoid maintenance by a non-professional.”
Steam wand purge & wipe After each use

“And clean the surface with the dry cloth thoroughly after each use of the steam wand.”
Steam wand deep clean ST CLEAN reminder at 900 steam uses; machine locks at 1000 until cleaned

““ST CLEAN” will be shown by the machine when the steam wand reaches the level of 900-time-usage to remind the user to clean the steam wand.”

The settings

Group head thermoblock temperature

Range: 86 to 98 °C.

“Group head thermoblock temperature: adjust the group head thermoblock temperature (range: 86-98°c); press “ ” or “ ” to change the setting and press “ ” to save.”

Factory setting: not stated.

Step-by-step guides

What the manual does not say

7 jobs with nothing stated
  • Backflush (water)
  • Descale
  • Group gasket replacement
  • Shower screen clean
  • Shower screen replacement
  • Water filter / softener replacement
  • Water tank clean
Notes from the research
  • Maker domain wpmcoffee.com is not in the allowlist; WPM has no allowlist entry.
  • Two first-party detergent-backflush regimes (machine alert vs. daily 'working day' boilerplate); the alert is preferred.
  • No descale procedure or interval despite the warranty's scale exclusion.
  • No gasket replacement, shower screen, water tank or filter guidance.

Sources

Researched on .

Published: the sentence is on the maker’s own page or in the maker’s own document.

Community: the maker’s text, hosted somewhere else, usually by a retailer.