GC Water NEX RO 500 User Manual Download Page 14

TROUBLESHOOTING OVERVIEW:

SYMPTOM 

OR STATE

LIKELY 

CAUSE

REMEDY 

OR CORRECTION

Yellow lever on system is in 

“Emergency By-Pass” position.

Consult previous shift log. Verify Service has been called.

Minor Leak around system.

Filter seals need replacement.

Call for service.

Major leak or flooding.

Place unit in bypass and call for service immediately.

Less than 35 psi reading on the 

“System Delivery” Gauge. 

No electrical power or insufficient City 

Water Pressure to system.

Perform Steps 2 through 4.

Coffee Urn short batching or 

“System Delivery” Gauge reads less 

than 35 psi.

Filters plugged and need replacement.

Call for service  (If above 35 psi, problem 

may be with POU equipment).

System INLET Gauge reads 0 psi.

Check water supplied to location

Verify City Feed is open; still having 

issues. Call for Plumber.

TDS levels do not stay at factory 

levels

Too High TDS
Too Low TDS

Call for Service.
Out of Formula. Replace Formula by calling 

GC Water 805.484.1589.

TROUBLESHOOTING GUIDE

Step by step troubleshooting guide  is designed for the store operator to avoid unnecessary service calls and expenses. Do 

not hesitate to call for Technical Support if using this guide fails to fix the problem.  

Please have the results of these step by step 

checks ready before you call. Often the symptom or problem is not with the system itself, but with the power to the building or 

city water pressure to the system. If no water is available to one POU (espresso or brewer) this is a sure sign the problem is not 

with the system, but rather with the equipment the system supplies. Do not operate espresso machine or brew coffee during 

troubleshooting procedures, equipment damage may result. 

Y-STEP INSTRUCTIONS:

1.  Check the system pressure gauge reading. If the pressure reading is normal, (35-60 psi), then there is no immediate problem 

with the system. If the pressure moves below 35 psi or is at 0 psi, this means the city water pressure to system is too low 

or the electric and/or water is turned off to system. See step 2. 

2.  Verify if power monitor is on. Check the system digital monitor to see if it is turned on. If not, push in the green button.  If 

the system now has electrical power, go to Step 3. If not, check to see if yellow switch is on; if not, or you had to plug in the 

system, reset store electrical circuit breaker.  Once power is returned, see step 3.

3.  Check that water to the building is running by turning on a sink faucet. If water is running, check all water valves to the system 

are turned on fully. If both steps show water is on and available to system, see step 4. If water to the system was not available 

and is now restored to the system, wait 5 minutes for delivery pressure (above 35 psi) to be restored and for system pump 

to begin running normally. See step 4.

4.  If steps 1-3 fail to get the system producing water to the POU, call your Store Facility Service Center or GC Water immediately.  

To supply water temporarily to the POU (points of use) (brewer, espresso, etc.,) bypass the system which will send city water 

to the system instead of the system water. Turn the system into bypass by turning the yellow bypass handle on the front 

faceplate from off

 

to the bypass position.  

NOTE:

 Tank will not refill while in bypass. System Pressure will read zero psi.

Do not place the system into “EMERGENCY BYPASS MODE” without informing the Store Management immediately.

PAGE 14

Summary of Contents for NEX RO 500

Page 1: ...info gcwater com 20 Opportunity Road Camdenton MO 65020 805 484 1589 www GCWater com NEX RO 500 User Guide ...

Page 2: ...urposes without specific written permission from GC Water Contents 2 Unit Information 3 RO Unit Diagram 4 Installation Hardware 5 Installation Tools 5 Installation Notes 6 Installation Instructions 7 Hand Held TDS Meter 8 Emergency Bypass 9 Filtered Bypass 10 Filter Membrane Replacement 11 Production Rate Check 12 Routine System Check Guide 13 Troubleshooting Guide 14 Gauge Info 15 Warranty 16 CON...

Page 3: ...get total draw Operating Parameters Open Flow Rate 0 35 GPM Daily Production Rate 500 GPD Sound Emission 50dB max Unit Dimensions Height 19 5 Width 19 5 Depth 9 25 Ship Weight 25 lbs Wet weight 37 lbs Production rates are calculated with incoming water pressure at 70 psi and temperature at 77 F Warning Do not use where water is microbiologically unsafe or of unknown quality Replacement components ...

Page 4: ... Sediment Pre Filter 5 Carbon Pre Filter 6 Membrane 7 Membrane Drain 8 City In Fitting 9 Unit Connection Plug 10 Drain Fitting 11 Filtered Bypass Fitting 12 RO Out Fitting 13 Solenoid Incoming Pressure Outgoing Pressure 1 2 4 5 6 7 3 City In Filtered Bypass RO Out Drain 8 11 10 9 12 13 PAGE 4 ...

Page 5: ...TION TOOLS RO Unit Mounting Bracket Tubing Cutters 7 Unit Connection Cord 20 of 3 8 Tubing 2 1 1 4 x 1 1 2 Lag Bolts 2 1 4 Lag Bot Washers 1 4 Wrench Not Included 3 32 Drill Bit Not Included Electric Power Drill Not Included PAGE 5 ...

Page 6: ... level rim of the receptor The vertical distance between the conveyor and receptor shall be no less than 1 inch 7 Installation must comply with existing local plumbing codes Air gaps must comply with drawings or an approved air gap device may be used In addition some local plumbing codes require back flow devices Both the air gap device and back flow device are not supplied as part of the unit The...

Page 7: ...y In 8 in RO Unit Diagram on page 4 on the RO unit Do not turn on the city water at this time 7 Run 3 8 tubing from the RO Out 12 in RO Unit Diagram on page 4 on the RO unit to RO In on the storage tank 8 Run 3 8 tubing from Drain 10 in RO Unit Diagram on page 4 on the RO unit to a city drain NOTE When connecting the drain make sure there are no obstruction for the flow of the water The drain shou...

Page 8: ...ored in water or a solution Changing the Batteries 1 When the meter displays a flashing battery symbol your batteries are getting weak and should be replaced soon To change the batteries 2 Pull out the blue battery compartment using your thumb nail 3 Remove the three batteries 4 Insert new batteries in the direction as depicted inside the compartment The flat side of the battery is the positive si...

Page 9: ...Location will be in the unit guide that came with the water processing unit 3 Turn the yellow handle located on the water processing unit towards ON 3 in RO Unit Diagram on page 4 Note Tank will not refill while in bypass System pressure will read zero psi Removing the system from bypass 1 Turn the yellow handle located on the water processing unit towards OFF 3 in RO Unit Diagram on page 4 2 Turn...

Page 10: ...handle located on the front panel of the water storage unit Location on the water storage unit towards ON 9 Turn the feed water going to the unit ON The Incoming and Outgoing gauges should both begin to read pressure Removing the system from filtered bypass 1 Turn the feed water going to the unit OFF 2 Turn the yellow bypass handle located on the front panel of the water storage unit Location on t...

Page 11: ...nstall apply pressure to the top of one hand and insert the filter with the other 1 Remove blue cap on new filter and line up notches on filter to match placement on head Push up snugly on filter while holding the top of the processing unit Turn the filter to the right to lock 3 4 Repeat for all other filters you are installing 2 If membranes were replaced reinstall the drain fittings by pushing t...

Page 12: ...essing system is filling the storage tank 7 Place the RO Out line into the 500 ml graduated cylinder for 15 seconds 8 Note amount of water in graduated cylinder and use the calculation method below for gallons per day GPD Multiply by 4 then multiply by 60 then multiply by 24 and then divide by 3785 ____ gallons per day 9 When your calibration is completed turn off the incoming water to the unit 10...

Page 13: ...asis Verify that all the gauges are reading the correct psi Make sure that the system bypass handles are in the off position Please contact your service provider when bypass handle is moved into bypass Only emergency situations require putting the bypass handle into the bypass position Listen for any changes in the sounds coming from the unit Check on a weekly basis Verify that there are no leaks ...

Page 14: ...sso machine or brew coffee during troubleshooting procedures equipment damage may result Y STEP INSTRUCTIONS 1 Check the system pressure gauge reading If the pressure reading is normal 35 60 psi then there is no immediate problem with the system If the pressure moves below 35 psi or is at 0 psi this means the city water pressure to system is too low or the electric and or water is turned off to sy...

Page 15: ...at is coming out of the filters on the water processing unit This gauge should be relatively close to the incoming pressure gauge It will typically sit about 5 psi less then the incoming pressure gauge If it is showing a difference of 20 psi with the incoming pressure gauge your filters will need to be replaced right away The outgoing pressure gauge will have a resting psi of 0 psi when the storag...

Page 16: ...s installed and used in compliance with the instructions enclosed with the system The Warranty does not cover any non GC Water parts the costs of repairs or adjustments to the unit that may be needed because of the use of improper parts equipment or materials unauthorized alterations of the unit or failure of a unit caused by such alter ations or by unauthorized repairs The Warranty does not cover...

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