Wellsys W9 - Page 40

W9 Manual Page 40 - Revision: 10-06-2023
5. Overfill of Cold Tank
Possible Reason
Solution
Mechanical Float Failure
Check function of fill float on underside of tank lid. When the float lifts, it
should choke water flow to zero. If not, replace.
6. Operation Sensors are Unresponsive
Possible Reason
Solution
Power Failure
Check power at outlet, and check fuse on the back of unit.
Sensor Failure
Ensure sensor has not disconnected from PCB. Ensure front panel protective
film has been removed from the unit. If sensor is still unresponsive, replace
them.
7. Leak Stop Triggered
If water leaks into the bottom tray of the unit, the leak stop will be tripped and the water supply to the
filters will be cut off.
To correct this, any leaks must be found and properly repaired/corrected. Then, any water in the bottom
tray must be dried up. Then, the leak stop underneath the filters must be reset. Ensure that there is no
moisture in the bottom of the unit.
8. Filtration
It is recommended 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.
o When using a bladder, this is much more susceptible to manifesting itself as a
problem.