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WL380

 Manual 

                                                                 Page 52 ‐ Revision:  2‐5‐2018 

HOT TANK DESCALING INSTRUCTIONS

 

 

The Hot Tank requires removal of mineral deposits (descaling) on a regular basis.  Typically descaling 
should take place every 6 to 12 months to preserve the long‐term health of your unit.  
 
Use non‐toxic cleaner such as ScaleKleen, DEZCAL, 20% Citric Acid Solution, or Undiluted Vinegar 
Solution to remove mineral deposits as directed by the manufacturer depending upon filtration and 
local water conditions.   
 
Descaling is an important process that removes calcium deposits, or scale, that can build up inside a 
tank over time.  Calcium and scale is non‐toxic but left unattended will hinder your unit’s 
performance.  
 

WARNING!  

PERSONAL PROTECTIVE EQUIPMENT REQUIRED.  

Always ensure proper ventilation 

and use rubber or nitrile gloves and eye protection when using chemicals.  Refer to Material 
Safety Data Sheet for specific requirements of each product.

     

 

             CAUTION!

  

 STAINLESS STEEL TANK DESCALING

.  

 

The Hot Tank is made from stainless steel.  Ensure descaling solution is compatible with stainless 
and always flush the unit completely.  Dispose in an environmentally safe manner. 

 

Materials Needed:  

 

Personal Protective Equipment.  Rubber or Nitrile Safety Gloves and Protective Eyewear  

 

Phillips Screwdriver   

 

Temperature Gauge 

 

Water Pitcher or Container to collect water from the faucet 

 

19 Liter (5 gallon) container or drain basin 

 

Citric Acid Based Cleaner 

 

¼” Plastic Tubing, at least 4 feet in length, and assorted ¼” quick connect fittings 

 

Sanitizing Cartridge 

 

Food Coloring 

 

1.

 

Put descaler per directions and 3 drops of food coloring into the descaling cartridge. 
 

2.

 

Connect descaling cartridge to the inlet water supply and connect to Inlet Bulkhead Fitting on the 
back of the 

WL380

 

Water Treatment System

.  Turn on Water Supply. 

 

3.

 

Select Hot Water and depress the Main Dispensing Button on the Front Control Panel until descaling 
solution (colored water) comes out of the faucet.  Container and drain basic will be required to 
catch water from the faucet. 
 

4.

 

Turn off water supply and remove sanitizing cartridge from inlet water supply.  Reconnect water 
supply to inlet fitting. 
 
 

Summary of Contents for WL380

Page 1: ...ming out of Faucet Vent Hole 7 Low Flow of Water 8 Hot Water Drip out of Faucet 9 Dispenses Hot and Cold Water at the same time 10 No cold water available 11 Water does not dispense from unit 12 No Wa...

Page 2: ...Water Pressure to 40 60 psi Loose or bad connection on the Front Dispensing PCB or Solenoid Connector Check that they are connected properly and tightened Solenoid If both the Water Pressure and PCB...

Page 3: ...or Faulty Solenoid Replace Solenoid 4 Steady Drip Out of Faucet Possible Reason Solution Debris in Solenoid Inspect Solenoid for debris and clean out as needed 5 Hot Water or Steam Coming out of both...

Page 4: ...e Reason Solution Determine Flow of Water Rated Flow Rate is 1 89 Liters 0 5 gallons per minute Check flow rate by dispensing into a container to measure for one minute Measure the amount of water tha...

Page 5: ...ucet The Hot Tank Outlet Tube has a Restrictor in its base This ensures the reservoir is always full by allowing more water in than out There is a small hole in the side of the Hot Tank Outlet Tube th...

Page 6: ...oid Replace Solenoid as necessary 10 No Cold Water Available Possible Reason Solution Closed Water Supply Valve Open the Water Supply Valve Cold Water Solenoid Valve malfunction Inspect the valve comp...

Page 7: ...ch on I ON 15 Amp Fuse Blown Replace the 15 Amp Fuse as needed Water is present in the Bottom Tray causing the Leak Detection to trigger Remove the Top Cover and Front Panel Tip the unit slightly to d...

Page 8: ...w dispenses from the opposite side this is an indication that there is a PCB problem Replace PCB Solenoid If both the Water Pressure and PCB have been ruled out then it is the Solenoid Replace Solenoi...

Page 9: ...the tank to flush out the contaminant s 15 Dispense Buttons Stick Possible Reason Solution Dirt or Foreign material is filling the gap around the Dispense Buttons Inspect the Dispense Buttons and clea...

Page 10: ...cet The inlet solenoid controls flow into the tanks The tanks will depressurize once the dispense button is released the inlet solenoid closes A small amount of water will Run On through the faucet as...

Page 11: ...ot Tank is made from stainless steel Ensure descaling solution is compatible with stainless and always flush the unit completely Dispose in an environmentally safe manner Materials Needed Personal Pro...

Page 12: ...er above 52o C 125o F can cause severe burns or scalding Keep unauthorized people and children away from the unit to avoid accidental dispensing of hot water CAUTION MUST REPLACE HOT TANK 3 5 YEARS DE...

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