I have not cleaned my "Zojirushi CD-WBC40 Micom 4-Liter Electric Water Boiler and Warmer" in three and a half years of continuous use (See image). I followed the instruction exactly as given and afterward sprayed the water boiler out with the kitchen sink sprayer. The sides were clean but the bottom and the filter still had heavy mineral buildup. This is to be expected, because the instructions are for routine MAINTENANCE cleanings, NOT for heavy mineral buildup from years of neglect. To get the heavy mineral buildup left behind, add one packet (it is citric acid powder) to a cup of warm water, stir well, then add ONLY three more cups of water and run the cleaning cycle. The citric acid in the water is too dilute otherwise. All the mineral buildup should be cleaned off.
I read one of the reviews on this site and someone was worried about "harsh chemicals" being used. All this product is is citric Acid, it is completely safe; if you are worried about ANY citric acid residue, you would immediately notice a strong tart taste in the water if there were any citric acid left.
| Brand | Zojirushi |
|---|---|
| Manufacturer | Zojirushi |
| Model Number | CD-K03EJU |
| Part Number | CD-K03EJU |
| Batteries Included | No |
| Batteries Required | No |
| Material Type | Man-Made-Material |
| Manufacturer | Zojirushi |
| Item model number | CD-K03EJU |
| Product Dimensions | 4.11 x 13.34 x 6.05 cm; 28.35 Grams |
| ASIN | B002PEX69G |
