i16 Manual Page 40 - Revision: 2-09-2023
be physically harder and slow the evaporator. Ice dispense light
will blink in this event.
To remedy:
• Drain and measure TDS from the evaporator and ice melt.
• Share these values with Technical Support,
• Properly descale the unit.
• Check incoming water supply to the system.
• Add the drain kit available FOC. This kit will help avoid this
from occurring.
*If Ice Light blinks on a new install, that would represent this.
3. Screeching/Whining Noise
This normally occurs when water is not treated with RO and
hardness of water is high. Scale builds up in the gear motor as it is
separated during freezing, the heat exchange is not performed
properly, freon becomes much colder than intended, and ice
becomes harder. This results in stress on the gear motor and
causes screeching sounds.
• Cleaning and descaling are recommended.
• Draining of auger water is recommended as well.
• Adding the drain kit is highly advised.
• Change to RO filtration is highly advised.
4. Filtration
Ice systems are all very sensitive to hardness. For this reason, we recommend using RO where
possible and almost always if TDS from the tap is greater than 150 PPM. For an RO to work
properly it is very important that the following variables are addressed and performed properly.
• Incoming Water Pressure: RO’s require 60-70psi to work properly.
• Lower PSI will cause the reduction in TDS to suffer greatly, as well as the recovery rate.
o 60psi results in (roughly) 7.3oz/min from 80GPD membrane
o 40psi results in (roughly) 2-3oz/min from 80GPD membrane
o 60psi results in (roughly) 98% reduction of TDS from the RO
o 40psi results in (roughly) 80-85% reduction of TDS from the RO
o Example:
▪ 500 Tap TDS at 98% reduction = 10TDS product water
▪ 500 Tap TDS at 85% reduction = 75TDS product water
▪ 500 Tap TDS at 80% reduction = 100TDS product water
▪ With the mineral add back filter a high concentration of calcium will
negatively impact the amount of scale that will, as a result, negatively
impact ice systems.
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