dispensing troubleshooting index - WL Tech Portal

DISPENSING TROUBLESHOOTING INDEX
1. Hot Water flow, Cold Water does not flow
2. Hot Water flows, Hot Water does not flow
3. Low Flow of Water
4. Restricted Flow of Hot Water
5. No Water Will Dispense from Unit
6. Small Amount of Water Periodically Dispenses from Faucet Automatically
7. Dispense Buttons Stick
8. Water Leaks
Also includes related instruction for Hot Tank Descaling and Draining Instructions.
1. Hot Water flows, Cold Water does not flow.
Possible Reason
Solution
Disconnect power supply for one hour to allow tank to
defrost.
Flush the cold water system.
Cold Tank Frozen
Check that the cold thermostat settings are correct
Cold Water Temperature - Factory Set Point 41° - 5°C
Adjustable 1.1°- 12.2°C (34°F - 54°F)
Mechanical Water Outlet
Faucet Valve
Check that the mechanical water outlet faucet valve is
operating correctly and that water flows through it.
2. Cold Water Flows, Hot Water does not flow.
Possible Reason
Solution
Verify the pipes feeding the Hot Water Tank.
No Hot Water
WL270 Manual
Check that the mechanical water outlet faucet valve is
operating and the water flows through it.
Page 43 – Revision 1-30-2018
3. Low Flow of Water – Rated Service Flow is 1.89 Liters (0.5 gallons) per Minute
Possible Reason
Determine Flow of Water
Feed Lines too small
Solution
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 and measure the amount of water that was
dispensed.
Feed lines can restrict flow if run long distances from the
supply. It may be necessary to increase the supply line (e.g.,
use 3/8” feed line vs. ¼”.
Elbows and turns in the feed
line
Minimize elbows and turns in the feed line.
Filters
Filters with high pressure drop due to fouling or just by
design. Change filters more frequently or go to higher
micron size filter for local water conditions.
Restrictions
Follow flow path to ensure there are no undiscovered
restrictions due to debris or malfunctioning valves, including
the supply valve at the source.
Booster Pump
Add a booster pump to the supply line if the feed is slower
than needed.
WL270 Manual
Page 44 – Revision 1-30-2018
4. Restricted Flow of Hot Water
Possible Reason
Partially closed water supply
valve to the unit.
Solution
Open water supply valve.
Descale Tank.
Hot Tank outlet hole is scaled
over.
See Hot Tank Descaling Instructions that are included
further below in this Troubleshooting Section.
See instructional video on the Partner Area of the
Waterlogic.com website for more information.
See instructional video on the Partner Area of the
Waterlogic.com website for more information.
Tubing is creased or has a
“kink” in it.
Inspect and replace tubing as necessary.
Faucet nipple screen mesh has
obstruction(s)
Unscrew faucet nipple from faucet and remove any
obstruction(s) from screen mesh.
Exhausted Filter
Replace the Filter
Solenoid connection to the
Display PCB
Solenoid Valve is
Malfunctioning
WL270 Manual
Turn power off; unplug the unit and visually inspect solenoid
connections into the Display PCB. Verify the soldering points
on connections are secure into the board.
Remove the PCB to inspect the front of the board.
Inspect valve components for proper function. Replace as
necessary.
Page 45 – Revision 1-30-2018
5. No Water Will Dispense from Unit
Possible Reason
Too much water pressure.
Recommend 40 to 60 psi for
the WL270 Water Treatment
System to operate properly.
Solution
The correct input water pressure is critical to the
performance of the unit to allow solenoids to open.
Check water pressure at the inlet bulkhead with a water
pressure gauge.
Additional method of verification is to turn off water to unit
and press the dispense button. Does the solenoid open
without water pressure to the unit? Listen for solenoid to
activate, not button “click”.
Adjust water pressure to 40-60 psi.
Closed water supply valve
Open the water supply valve.
The unit is not properly
plugged into electrical outlet
Check electrical outlet connection, or for blown circuit
breaker.
Red Heater and Compressor
button on unit is in the off
position
Turn Red Heater and Compressor switch on.
I = ON
Fuse Blown
Replace the Fuse as needed.
Water is present in the bottom
Remove the top cover and front panel. Tip the unit slightly
tray, causing the leak
to drain, dry bottom tray completely.
detection to trigger.
Exhausted Filter / Membrane
WL270 Manual
Replace filters / membrane as needed.
Page 46 – Revision 1-30-2018
6. Small Amount of Water Periodically Dispenses from Faucet Automatically
Possible Reason
Too much water pressure.
Recommend 40 to 60 psi for
the WL270 Water Treatment
System to operate properly.
Solution
The correct input water pressure is critical to the
performance of the unit to allow solenoids to open.
Check water pressure at the inlet bulkhead with a water
pressure gauge.
Additional method of verification is to turn off water to unit
and press the dispense button. Does the solenoid open
without water pressure to the unit? Listen for solenoid to
activate, not button “click”.
Adjust water pressure to 40-60 psi.
Drain unit according to Drain Instructions that are included
further below in this Troubleshooting Section.
Obstruction in solenoid
housing is preventing proper
sealing of component.
Remove Reservoir Tank
Open Faucet Housing and check for Debris.
Put faucet back together, replace reservoir and fill unit. If
faucet continues to drip, replace the faucet.
7. Dispense Buttons Stick
Possible Reason
Dirt or Foreign material is
filling the gap around the
push-buttons.
Solution
Inspect the push buttons and clean surrounding area.
Inspect faucet assembly inside the unit and clean as
necessary.
8. Water Leaks
Possible Reason
Water Leak
Solution
Most leaks will be detected by the internal WL270 Water
Treatment System leak detection system that will trigger or
turn off the inlet solenoid valve.
Isolate the supply and start normal fault finding procedures.
WL270 Manual
Page 47 – Revision 1-30-2018
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
• 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. Check to ensure that the Red Heater and Compressor Power Switch is the O=OFF
position.
NOTE: Switches have internal LED that illuminates when placed in I=ON position.
2. Turn off the water supply and unplug the unit.
3. Remove top Cover
4. Remove Reservoir Lid
5. Remove Hot Tank Drain cap on back of unit and allow all water to drain from unit.
WL270 Manual
Page 48 – Revision 1-30-2018
6. When unit has finished draining, replace Hot Tank drain cap.
7. Remove reservoir from unit.
8. Mix descaler per instructions.
9. Add descaling mixture to the Hot Tank through the Hot Tank
fill portal located in the water inlet port.
Hot Tank fill portal to add
descaling mixture to.
10. Replace reservoir.
11. Turn on water supply and plug in unit.
12. Allow reservoir to fill.
13. Turn on the Red Heater and Compressor Power Switch. I=ON position.
14. Allow descaling mixture to remain in Hot Tank for 15 minutes (exposure time may
be affected by local water conditions).
15. Flush unit until all descaler is removed.
WARNING! HOT WATER HAZARD. Unit Produces Very Hot Water and Steam. Always use
insulated and chemically compatible containers and let unit cool down before draining the Hot
Tank to avoid injury.
CAUTION! MUST REPLACE HOT TANK 3-5 YEARS DEPENDING ON USAGE. The Hot Tank and
its controls must be replaced a minimum of every 3-5 years depending on usage to ensure
efficient and dependable operation.
WARNING! REINSTALL ALL PANELS AND COVERS. Always reinstall all panels, protective
covers, and fasteners after servicing equipment. Failure to do so could result in severe
personal injury and will void the certifications and warranty of the equipment.
WL270 Manual
Page 49 – Revision 1-30-2018
WL270 DRAINING INSTRUCTIONS
Drain the WL270 Water Treatment System for transportation.
WARNING! STORE UNIT EMPTY. ALWAYS SANITIZE BEFORE REUSE.
The unit must be completely drained and sealed before storing to avoid stagnation and reduce
microbial growth).
Prior to draining the Hot Tank, turn off the Red Heater and Compressor Power
Switch O = OFF, and dispense 2 liters of hot water from the machine. As hot water
is dispensed from the faucet of the unit, colder water will be introduced into the
Hot Tank. Since the Red Power switch is turned off, the heater will not energize
and heat the incoming tap water. Following this precaution prevents exposing
personnel and equipment (drains, catch basin, etc.) to scalding hot water.
Disable Cold and Hot Tanks
1. Turn off the Red Heater and Compressor Power Switch to disable the heater and
compressor.
2. Dispense 2 liters of water through the Hot Tank to cool the water temperature in
the Hot Tank and avoid burns.
WARNING! HOT WATER CAN BURN OR SCALD.
Hot water should be dispensed carefully into insulated container to avoid injury.
Turn off Water Supply and Bleed Water Pressure
3. Isolate the unit from feed water by turning off the supply.
4. Dispense cold still water to relieve any pressure built up in the system.
5. Remove the water supply line from the hose adaptor.
Drain the Cold Water Tank and Circuit
6. Remove Hose Adaptor.
7. Remove Drain Caps located on back of unit.
8. After unit drains, replace drain caps.
WL270 Manual
Page 50 – Revision 1-30-2018
Download PDF
Similar pages