Mineral deposits can block shower flow.
Grohe is an international manufacturer of quality kitchen and bath fixtures. Grohe shower heads are designed to be attractive as well as functional; however, even the most eye-catching shower fixture can be subject to a blockage. A slowdown in water flow usually has little to do with design. The blockage is nearly always caused by a buildup of mineral deposits. Once those deposits are cleared away, the shower head should operate normally.
Instructions
1. Check the manual that came with your shower head for instructions on remove it. According to the Grohe.com website, shower head installation requires just a few screws. In most cases, there is a nut just behind the shower head that should be unscrewed in a counterclockwise motion. Place a towel in between the wrench and nut to prevent scratching the finish.
2. Turn on the water to check water flow once the shower head is removed. If the flow is normal, the problem definitely lies within the shower head.
3. Check the flow restrictor for mineral deposits if your model has one. The water flow restrictor may be located in the pipe just behind the shower head or inside the shower head. Check the manual or consult the retailer or manufacturer for assistance if you have difficulty locating it.
4. Examine the shower head for mineral deposits. Use a long straight pin or straightened paper clip and old toothbrush to clear out holes in the shower head and flow restrictor.
5. Place the shower head in a shallow pan filled with white vinegar. Allow it to sit overnight.
6. Rinse the shower head with clear water. Reassemble the shower head.
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