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INSTALLATION & SERVICE MANUAL 
 
Reverse O DI  Water Systems 
 
Model: 
 
RD-322 

6-Stage RO+DI system, 260 GPD, single output 

 
 
Note: 
System must be maintained and serviced using manufacturer’s original replacement filters and parts.  Using 
other brands of replacement filters may shorten the life of RO membrane and damage the auto-shut-off valve. 
 
Made by:  WaterGeneral Mfg. Co.

   

 

 

 

 

 

 

Made in U.S.A.  

 

 

 

 

 

 

 

 

 

 
 

PRODUCT SPECIFICATION 

 

System Requirements 

 

Working pressure: 50 to 80 psi feed water pressure required, if below 50 psi, a booster pump is 
recommended.  We have a RO system with booster pump assembly. If the input pressure is above 80 
psi, you MUST put a pressure regulator to reduce the pressure below 80 psi. 

 

Working temperature:  100 ~ 40 deg. F  ( 37 ~ 4 deg. C ) 

 

pH range:  2-11 

 

If feed water has hardness level above 300 ppm, we recommend putting a water softener prior to the RO 
system. 

 

If feed water has iron, rust problem, we recommend putting a iron filter prior to the RO system. 

 

If feed water has bacteria problem, we recommend putting an ultra violet sterilizing system prior to RO 
system. 

 
Filter Service Life 

 

1

st

 Stage Sediment filter:  Recommend changing every 6 ~12 months.   

 

 

2

nd

 Stage Carbon block filter: Recommend changing every 6 ~12 months.   

 

 3

rd

 Stage Carbon block filter:  Recommend changing every 6 ~12 months.  

 

 

4

th

 & 5

th

 Stage TFC membranes:  Recommend changing every 2~3 years.    

 

 

6

th

 Stage Inline DI filter (RD-322 only):  Recommend changing when TDS reading is undesirable. 

 

Warranty 

 

1 year Limited Warranty on parts, components.  Filters are not under warranty.  System must be 
maintained and serviced using manufacturer’s original replacement filters and parts.  Using 3-party 
replacement filters may shorten the life of RO membrane and damage the auto-shut-off valve. 

 

Purification Processes/ Filter specifications 
Removes microbiological contaminants like Cysts (protozoan), inorganic/Radiological contaminants like 
Barium, Cadmium, Copper, Chromium (hexvavalent), Chromim (trivalent), Fluoride, Lead, Radium 
226/228, Selenium, etc. 
Ammonia, Arsenic, chloramines, chlorine, copper, lead, nitrate, phosphate, silica, hardness, calcium, 
magnesium, other dissolved solids.  

Summary of Contents for RD-322

Page 1: ...If feed water has bacteria problem we recommend putting an ultra violet sterilizing system prior to RO system Filter Service Life 1st Stage Sediment filter Recommend changing every 6 12 months 2nd Sta...

Page 2: ...F 1 4 RECOMMENDED TOOLS LIST Variable speed drill 1 8 1 4 7 16 1 2 and 5 8 drill bit 5 8 9 16 open end wrench or adjustable wrench pliers Phillips screwdriver Utility knife or scissor Teflon tape OPER...

Page 3: ...mL min using a flow restrictor This drain rate is constant independent of input pressure How to attach tubing to the system There are two types of fittings in the system Compression and quick connect...

Page 4: ...nnect to garden hose valve garden hose or laundry room hose valve cold side 2 Connect the drain line to a open sink laundry room drain floor drain Or connect the drain line to a drain pipe using the d...

Page 5: ...t pipe Many times it is easier to use the existing cone washer than using the new one If there is not enough space under the sink base or it s difficult to get to you can disconnect the riser from the...

Page 6: ...th the two bolts 1 Tighten the two bolts evenly 2 Connect tubing STEP 5 SYSTEM START UP 1 Make sure all tubing are not kinked 2 After the water supply tubing drain tubing and pure water tubing are con...

Page 7: ...p is needed for input water pressure less than 50 3 the system makes water slower at cold temperature 4 Replace filters Low water production 1 Clogged filters 2 Kinked tubing 3 Clog flow restrictor 1...

Page 8: ...the tubing to its elbow fittings Turn on the water supply and tank valve to restart the system Check for leaks if there is a leak tighten the cap Wait 2 to 3 hours for the tank to be filled then you...

Page 9: ...usions Manufacturer will not be responsible for any implied warranties including those of merchantability and fitness for a particular purpose Manufacturer assumes no liability whatsoever for any inci...

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