CMA Dishmachines Lime Scale / Hard Water Deposits

Visible white film or spots on glassware and dishes after washing.

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Possible Causes

Hard water without softening, Insufficient rinse aid, Excessive detergent concentration, Booster heater running too hot causing flash drying

How to Fix / Troubleshooting

Safety first: Wear gloves when handling descaling chemicals or detergents.

Step-by-step checks:

  • Check water hardness: Use a hardness test kit. If hardness is above CMA’s recommended range, a water softener or treatment system is strongly recommended.
  • Adjust detergent and rinse aid: Work with your chemical supplier to optimize detergent and rinse aid concentrations for your water conditions.
  • Descale machine: Follow CMA’s descaling procedure using an approved deliming agent. Run a delime cycle to remove mineral buildup from the tank, booster, and spray arms.
  • Rinse thoroughly: After deliming, run several rinse cycles with fresh water to remove chemical residues.

When to call a technician: Severe scale buildup inside the booster or piping may require partial disassembly and professional cleaning.

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Repair Difficulty

Easy 2/5
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