Ro-Man 200 GPD User manual

RO-MAN REVERSE OSMOSIS SYSTEM INSTALLATION GUIDE
1
R-MANO
REVERSE OSMOSIS
SYSTEM INSTALLATION GUIDE
200 AND 300 GPD SYSTEMS
STANDARD INSTALLATION KIT (INCLUDED):
1. REVERSE OSMOSIS SYSTEM
2. MEMBRANES
3. SEDIMENT FILTER
4. CARBON FILTER
5. MULTI MEDIA FILTER
6. 2M RED PIPE
7. 2M GREEN PIPE
8. 2M BLUE PIPE
9. WASTE SADDLE
10. SADDLE VALVE MAINS ¼”
11. FILTER WRENCHROLL PTFE TAPE
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RO-MAN REVERSE OSMOSIS SYSTEM INSTALLATION GUIDE
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PLEASE READ THIS ENTIRE GUIDE
PRIOR TO BEGINNING INSTALLATION.
THIS WATER SYSTEM HAS BEEN DESIGNED FOR QUICK AND SIMPLE INSTALLATION AND MAINTENANCE.BY
CAREFULLY READING THIS INSTRUCTION MANUAL AND FOLLOWING THE OPERATIONAL GUIDELINES YOU
WILL INSURE A SUCCESSFUL INSTALLATION AND RELIABLE OPERATION.ROUTINE MAINTENANCE IS
ESSENTIAL TO THE LONGEVITY AND PERFORMANCE OF THE SYSTEM.FILTERS SHOULD BE CHANGED
EVERY TWO TO SIX MONTHS DEPENDING ON THE QUALITY OF THE FEED WATER SUPPLY AND THE QUANTITY
OF WATER PRODUCED.
CAUTION
DO NOT USE THIS SYSTEM WHERE THE WATER IS MICROBIOLOGICALLY UNSAFE OR OF UNKNOWN QUALITY.
CONDITIONS FOR OPERATION
TFC – Thin Film Composite
Source Water Supply – TEC
COMMUNITY/PRIVATE NON-CHLORINATED –OR CHLORINATED AS LONG AS THE
CARBON FILTER IS IN PLACE AND REPLACED EVERY 6MONTHS
OR AFTER RECOMMENDED GALLON THROUGHPUT,
WHICHEVER COMES FIRST.
MEMBRANES ARE DAMAGED BY CHLORINE.
SYSTEM PRESSURE (PRE-FILTRATION) 0-75 PSI
MEMBRANE PRESSURE RANGE 40-125 PSI
TEMPERATURE 4º-38º C (40º-100º F)
PH RANGE 3.0-13.0
MAXIMUM SUPPLY TDS LEVEL 1500 MG/L
TURBIDITY <1.0 NET TURBIDITY (NTU)
CHEMICAL PARAMETERS – TEC
HARDNESS (CACO.) <350 MG/L (<20 GPG)
IRON (FE) <0.1 MG/L
MANGANESE (MN) <0.05 MG/L
HYDROGEN SULFIDE (H2S) 0.00 MG/L
CHLORINE (CL2) 0.00 MG/L
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RO-MAN REVERSE OSMOSIS SYSTEM INSTALLATION GUIDE
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STARTING YOUR INSTALLATION
PREPARATION
DETERMINE THE LOCATION FOR THE INSTALLATION OF THE SYSTEM.AVOID LOCATIONS WHERE THE
SYSTEM MIGHT COME IN CONTACT WITH HOT WATER PIPES OR OTHER HAZARDS.
DETERMINE THE LOCATION FOR THE OUTLET PIPE.
DETERMINE THE LOCATION FOR THE INLET PIPE.
SOURCE &DRAIN WATER SADDLE VALVE
SHUT OFF THE WATER
LOCATE THE WATER SHUT-OFF VALVE FOR THE COLD WATER FEED LINE OF YOUR MAINS SUPPLY.
ACCIDENTALLY HOOKING UP THE SYSTEM TO THE HOT SUPPLY LINE WILL PERMANENTLY DAMAGE THE
MEMBRANE (SEE CONDITIONS FOR OPERATION). TO ASSURE YOU ARE USING THE COLD WATER LINE,
TURN ON BOTH THE HOT AND COLD TAP.AFTER THE WATER IS WARM TO THE TOUCH,FEEL THE PIPES
UNDER THE SINK.IT WILL BE EASY TO IDENTIFY THE HOT AND COLD PIPES.
CLOSE THE COLD WATER VALVE.TURN ON THE COLD WATER TAP ONLY TO ASSURE THAT THE LINE IS
COMPLETELY SHUT OFF AND THE LINE IS DRAINED…IF NO SHUT OFF VALVE IS LOCATED UNDER THE SINK,
TURN OFF THE MAIN SUPPLY AT THE ENTRY TO THE HOUSE.
INSTALLING THE DRAIN CLAMP
SELECT A LOCATION FOR THE DRAIN HOLE BASED ON THE DESIGN OF THE PLUMBING.POSITION THE
DRAIN OUTLET SADDLE ON THE DRAINPIPE.ALLOW ADEQUATE SPACE FOR DRILLING.TIGHTEN THE BOLTS
EVENLY ON BOTH SIDES.AVOID OVER TIGHTENING.
USING THE OPENING IN THE DRAIN OUTLET SADDLE AS A GUIDE,DRILL A ¼” HOLE IN THE DRAIN PIPE.
CLEAN
DEBRIS FROM THE SADDLE AND THREADS
INSTALLING SUPPLY FEED

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CONNECTING THE RED PIPE TO THE SADDLE VALVE IS NOT DIFFICULT,REMOVE THE NUT FOR THE VALVE
AND PUT IT OVER THE PIPE,THEN PUSH THE SMALL COPPER RING OVER THE END OF THE PIPE AND PUSH
THE INSERT INTO THE END OF THE PIPE.THEN PUSH THE END OF THE PIPE INTO THE VALVE ASSEMBLY
AND TIGHTEN THE NUT (DO NOT OVER TIGHTEN).
WHEN FITTING THE VALVE MAKE SURE THE SADDLE VALVE IS IN OPEN POSITION.WITH A SPANNER FIT THE
SADDLE VALVE TO A 15/9 MM PIPE.
ONCE THE SADDLE ASSEMBLY IS FITTED PUT THE OTHER END OF THE RED PIPE IN WATER CONTAINER
AND CLOSE THE TAP ON THE SADDLE VALVE TO PIERCE THE PIPE,YOU MAY NEED TO OPEN AND CLOSE
THIS SEVERAL TIMES TO CLEAN THE BORE OFF
NOTE ON FIT CONNECTIONS QUICK CONNECTORS:-
PIPE Q C FITTING
COLLET
THE PUSH FIT CONNECTORS ARE OPENED BY PUSHING DOWN ON THE COLLET RING WITH TWO
FINGERNAILS AND PULLING THE HOSE AT THE SAME TIME.IF YOUR NAILS ARE NOT USER FRIENDLY,THEN
USE A PAIR OF PLIERS,A SMALL SPANNER OR ANY TOOL THAT CAN APPLY PRESSURE ON BOTH SIDES OF
THE QUICK CONNECTORS COLLET
FITTING THE MEMBRANE
MEMBRANE
HOUSING “O” RIN
G
“O” RINGS
PRODUCTWATE
R
WASTE WATER
PRE- FILTERD
WATER
FILTER
HOUSING CAP
MEMBRANE HOUSING
NOTE PLEASE ONE MEMBRANE AT A TIME
DISCONNECT THE GREEN TUBE THAT RUNS IN TO THE TOP MEMBRANE HOUSING
UNPACK THE MEMBRANE.DO NOT REMOVE THE TAPE FROM AROUND THE MEMBRANE!

RO-MAN REVERSE OSMOSIS SYSTEM INSTALLATION GUIDE
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THE MEMBRANE HAS A PLASTIC CORE IN THE CENTER OF THE MEMBRANE MATERIAL.YOU WILL SEE THERE
ARE TWO SMALL BLACK O-RINGS.HOLDING THE HOUSING INSERT THE MEMBRANE WITH THE TWO SMALL,
BLACK O-RINGS FIRST,IT WILL STOP AT THE LARGE BLACK GASKET SEAL LOCATED ON THE OUTER EDGE
OF THE MEMBRANE MATERIAL.PUSH THE MEMBRANE INTO THE HOUSING SOMETIMES IT’S A TIGHT FIT SO
PUSH WITH ADEQUATE FORCE.YOU WILL FEEL IT “SEAT”INTO THE HOUSING.
ONCE THE MEMBRANE IS SEATED PROPERLY,MAKE SURE THE HOUSING “O RING”IS FITTED AND MOIST.
THEN SCREW THE HOUSING CAP ONTO THE HOUSING AND RE-ATTACH THE GREEN TUBE/S AS BEFORE.
REPEAT THE ABOVE IF YOUR SYSTEM HAS A SECOND/THIRD MEMBRANE (200 AND 300 GALLON SYSTEMS)
FITTING THE PIPES TO FLUSH THE CARBON FILTERS (YOU COULD DAMAGE THE MEMBRANE IF YOU DO
NOT DO THIS)
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RO-MAN REVERSE OSMOSIS SYSTEM INSTALLATION GUIDE
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RO _M AN
M EM BRANE HO USING 2
FEED WATER SUPPLY (RED)
300 GPD SYSTEM
PRE-FILTER
FLUSH MODE
200GPD SYSTEMSONLYHAVETWO MEMBRENS
GAUGE
DISCONNECTED
Sediment
CCB
CBR”
RO _M AN
M EM BRANE HO USING 1
RO _M AN
M EM BRANE HO USING 3
PRODUC T WATER (BLUE)
RESTRIC TOR
FLUSH VALVE
WASTE WATER (GREEN)
WASTE WATER (GREEN)
1. RED: -FEED WATER THIS GOES FROM THE METAL SADDLE VALVE TO THE INLINE FILTER
(THE SYSTEM HAS A RED CAP ON THE PUSH FIT FITTING)
2. GREEN:-WASTE WATER WASTE SADDLE TO THE OUT ON THE MEMBRANE HOUSING
FITTING THE PIPES FOR PRODUCTION

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RO _M AN
MEMBRANEHOUSING 2
FEED WATER SUPPLY (RED)
30 0 GPD SYSTEM
PRE-FILTER
FLUSH M ODE
2 0 0 G PD SYSTEM S O N LY HAVE TW O M EM BREN S
GAUGE
CONNECTED
Se d i m e n t
CCB
CBR2
RO _M AN
MEMBRANEHOUSING 1
RO _M AN
MEMBRANEHOUSING 3
PRO DUC T WATER (BLUE)
RESTRIC TOR
FLUSH VALVE
WASTE WATER (G REEN)
1. RED:-FEED WATER -THIS GOES TO THE METAL SADDLE VALVE (THE SYSTEM HAS A
RED CAP ON THE PUSH FIT FITTING).
2. GREEN:-WASTE WATER –THIS GOES TO THE PLASTIC WASTE SADDLE FROM THE OUT
ON THE MEMBRANE HOUSING (THE SYSTEM HAS A GREEN CAP ON THE PUSH FIT FITTING).
3. BLUE:-PRODUCT WATER -FROM THE SYSTEM TO YOUR WATER CONTAINER (THE
SYSTEM HAS A BLUE CAP ON THE PUSH FIT FITTING).

RO-MAN REVERSE OSMOSIS SYSTEM INSTALLATION GUIDE 8
STARTING THE SYSTEM FOR THE FIRST TIME
MAKE SURE ALL WATER SUPPLY /DRAIN LINES ARE SECURE AND FREE FROM LEAKAGE.BY SLOWLY TURNING THE SADDLE
VALVE COUNTER CLOCKWISE UNTIL FULLY OPEN.CHECK SEAL FOR LEAKAGE.IF NECESSARY,TIGHTEN STEM NUT LIGHTLY.
IMPORTANT NOTE:
DO NOT USE THE FIRST 10 GALLONS OF WATER
DISPENSE THIS WATER TO DRAIN.THIS PROCESS REMOVES THE FACTORY INSTALLED SANITIZING SOLUTION
FROM THE ENTIRE SYSTEM AND SENDS IT TO THE DRAIN.DO NOT DRINK THIS WATER!
MAINTENANCE-IMPERATIVE TO FOLLOW THE SEQUENCE AS OUTLINED
FLUSHING THE SYSTEM WITH THE FLUSH VALVE
ALL RO-MAN SYSTEMS ARE FITTED WITH A FLUSH VALVE,THIS VALVE IS TO EXTEND THE LIFE OF THE
MEMBRANE,THE MORE OFTEN YOU CAN PUT THE SYSTEM IN FLUSH MODE THE BETTER.DAILY FLUSHING IS
BEST BUT WEEKLY IS OK.ALL YOU NEED TO DO IS OPEN THE FLUSH VALVE FOR 2-3 MINS EACH TIME,THIS LETS
THE WATER BLAST AWAY ANY BUILD UP IN THE MEMBRANE.
WHEN TO REPLACE THE PRE-FILTERS
SEDIMENT PRE-FILTER SHOULD BE CHANGED WHEN EVER CHANGING ANY OTHER FILTER OR WHEN IT LOOKS
CONTAMINATED OR IF YOU GET REDUCED PRESSURE
CARBON FILTER AND CCB FILTERS SHOULD BE CHANGED EVERY 16666 GALLONS OF WATER THROUGH PUT
OR ON THE 300 GPD SYSTEM EVERY 8000 GALLONS OF PRODUCT WATER AND ONE THE 200 GPD SYSTEMS
EVERY 5000 GALLONS OF PRODUCTION.
ALL PRE-FILTERS SHOULD BE CHANGED EVERY 6MONTHS IF WATER CAPACITY IS NOT REACHED
CHANGING THE PRE-FILTERS
1.) TURN THE WATER OFF BY SLOWLY TURNING THE SADDLE VALVE CLOCKWISE.
2.) REMOVE THE PRE-SEDIMENT
3.) REMOVE THE CARBON CARTRIDGE
4.) REMOVE THE CBR2CARTRIDGE
5.) INSTALL THE NEW FILTERS AND RE-ASSEMBLE SYSTEM.
6.) TURN ON THE SYSTEM AND INSPECT FOR LEAKS.
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RO-MAN REVERSE OSMOSIS SYSTEM INSTALLATION GUIDE 9
TROUBLESHOOTING:
IT'S OK TO CONTACT YOUR RETAILER OR SEND RO-MAN AN EMAIL.IT IS BEST TO TRY FIRST AND REMEMBER,
WE CANNOT SEE IT FROM HERE.... DIGITAL PHOTOS ARE GREAT.... ALL PROBLEMS ARE FIXABLE AND IN
GENERAL THEY WILL SHOW UP IN THE FIRST 24-48 HOURS AFTER THE SYSTEM IS FULLY CHARGED.
1) "I HAVE LEAKAGE FROM A PUSH-IN FITTING"
SOLUTION:THE PUSH-INS NEVER LEAK (NEVER SAY NEVER???). TRY PUSHING THE LINE IN HARDER.
TAKE THE LINE OUT AND CHECK THE END OF THE TUBE.IS IT A CLEAN CUT?? IF NOT,TAKE A PAIR OF
SHARP SCISSORS (OR A SHARP KNIFE)AND CUT IT THEN PUSH IT IN AGAIN,FIRMLY.
2) "THE SYSTEM IS NOT MAKING WATER"
THIS IS ALMOST ALWAYS A PSI PROBLEM.40 PSI IS ABOUT AS LOW AS YOU CAN GO.IF THE PSI IS LOW
IT CAN BE A BAD HOLE ON THE FEED WATER PIPE.TRY DRILLING IT OUT.
IF YOU HAVE GOOD PSI TO THE INSIDE OF THE PRE-FILTERS,THEN CHECK THE FOLLOWING:
A)CHECK TO SEE IF THE WATER IS FLOWING OUT THE GREEN DISCHARGE LINE... IF SO,THEN THE
MEMBRANE IS GETTING WATER.
B)DISCONNECT THE BLUE LINE FROM THE RO MEMBRANE HOUSING.... IS THERE ANY WATER?
C)IF THE GREEN LINE IS FLOWING AND THE BLUE IS NOT,IT MAYBE BLOCKED,CHECK THE VALVE AT
THE RO HOUSING.THERE ARE TWO OUTLETS ON THE OUT END OF THE RO MEMBRANE.ONE GOES
TO THE DISCHARGE SADDLE AND THE OTHER IS PURIFIED WATER.THIS OUTLET HAS A BUILT IN CHECK
VALVE INSIDE THE CHROME PLATED BRASS PART... TAKE IT OUT ... IS THERE ANY WATER THERE?
D)IF UNIT HAS BEEN IN SERVICE FOR A WHILE,THE PROBLEM IS PROBABLY CLOGGED FILTERS.PULL
THE FILTERS OUT,TEST THEM ONE AT A TIME BY PUTTING THEM INTO THE FIRST FILTER POSITION AND
SEEING IF IT FLOWS.CLOGGED FILTERS ARE USUALLY ONLY ASSOCIATED WITH WELL WATER OR WITH
REALLY TURBID WATER.
E)THE RO MEMBRANE HAS SILTED UP.VERY RARE UNLESS VERY BAD FEED WATER.THE RO
MEMBRANE IS SELF-FLUSHING.TRY BACK-FLUSHING THE MEMBRANE.
3) "MY FILTERS ARE LEAKING"
LOOSE O-RING.TAKE HOUSING OFF AND MAKE SURE THEY ARE PROPERLY ALIGNED.
HOUSING NOT TIGHT ENOUGH... TIGHTEN.
4) "I HAVE LEAKAGE FROM A SCREW-IN CONNECTOR"
A)NOT TIGHT ENOUGH ... GENTLY APPLY PRESSURE ... TOO MUCH AND YOU WILL STRIP THE THREADS
B)IF THAT DOES NOT WORK,REMOVE AND APPLY PTFE TAPE.
GET A GOOD LIGHT AND CHECK OVER THE ENTIRE SYSTEM CAREFULLY WHEN COMPLETED. ALSO,
REMEMBER THAT WHEN THE TANK FILLS UP COMPLETELY, THE SYSTEM IS THEN FULLY UNDER
PRESSURE AND THAT ISWHEN THETINY LEAKS OCCUR---IF THEYARE GOINGTO OCCUR-SO KEEP
YOUR EYE ONIT FOR ACOUPLE OF DAYS. ALSO REMEMBERTHISIS PROBABLY THEONE AND ONLY
TIME YOU WILL DO THIS...EXPECT ACOUPLE OF BUGS... THEYWILL BE WORKED OUT.
LAST TIP: NOTHING LASTS FOREVER... THE SYSTEM YOU BOUGHT WILL WEAR OUT. THETHINGS THAT
WEAR OUT ARE THERO MEMBRANE, ...THE FLOW RESTRICTOR AND THEGREEN LINE GET CAKED WITH
THEJUNK THAT ISBEING SENT DOWNTHE DRAIN ... THE RUBBER "0" RINGS WILL GET OLD AND CRACK,
JUST LIKE GASKETS ON YOUR CAR. IF YOU START REPLACING THEM ONE BY ONE, YOU ARE GOING TO
GO CRAZY AND WILL SPEND LOTS OF TIME AND MONEY. AMEMBRANE WILL COST AROUND £40.00 TO
REPLACE. THEBOTTOM LINE IS THAT IT IS CHEAPER AND EASIER JUST TOJUNK THE SYSTEM (OR KEEP
IT FOR PARTS) AND BUY ANEW ONE EVERY FEW YEARS, ORWHEN THE RO MEMBRANE DIES. YOU WILL
KNOW WHENTHERO MEMBRANE DIES ... THEWATERWILL START TASTING BAD. WE RECOMMEND
THAT YOUINVEST IN ATDSMETER AND CHECK THETDS OF THEFEED WATER ANDTHE TDSOFTHERO
WATER. WHEN THEREIS NO DIFFERENCE, THERO ISDEAD. IT WILL NOT HAPPEN OVERNIGHT ... THERE
WILL BE AGRADUAL DECAY.
REMEMBER-CHANGE FILTERS EVERY 6MONTHS. IF YOU HAVE FAIRLY HEAVY DUTY USE, ADJUST
ACCORDINGLY TOFIT IN WITHTHROUGHPUT SPECIFICATIONS.
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RO-MAN REVERSE OSMOSIS SYSTEM INSTALLATION GUIDE 10
RO-MAN OPTIONS /FITTED ACCESSORIES
PRESSURE GAUGE
THERE ARE TWO REASONS FOR FITTING A PRESSURE GAUGE
1. TO READ THE WATER PRESSURE IN ORDER TO CHECK WHETHER IT IS WITH IN SPECIFICATION
a. SYSTEM PRESSURE IS VERY IMPORTANT TOO LITTLE PRESSURE WILL MAKE THE
PRODUCTION RATE VERY SLOW,TOO MUCH PRESSURE WILL MAKE THE SEALS FAIL.
b. LOW PRESSURE WILL MAKE THE TDS HIGHER I.E.A SYSTEM RUNNING AT 65 PSI MAY HAVE A
TDS OF 5. THE SAME SYSTEM RUNNING AT 40PSI COULD HAVE A READING HIGH AS 15
2. TO WORK OUT WHEN THE SEDIMENT FILTERS A RE BLOCKING IN POOR WATER CONDITION.
a. A PRESSURE GAUGE IS GOOD FOR SHOWING A DROP IN WATER PRESSURE
IN LINE TDS (TOTAL DISSOLVED SOLIDS)METER
TDS METERS A RE USED TO WORK OUT HOW WELL THE REVERSE OSMOSIS SYSTEM IS RUNNING.
BY MEASURING THE FEED WATER TDS AND THEN MEASURING THE OUTPUT YOU CAN WORK OUT THE
REJECTION RATE.
90% REJECTION IS OK,
95% REJECTION IS GOOD
98%+ REJECTION IS EXCELLENT.
FOR MORE INFORMATION ON TDS TAKE A LOOK AT WWW.TDSMETER.CO.UK
RO-MAN INTEGRATED PUMP BOX
WE HAVE DEVELOPED A PUMP BOX THAT WILL INCREASE THE WATER PRESSURE THAT DRIVES THE
MEMBRANE
THIS PUMP BOX CONTAINS A PUMP,HIGH PRESSURE SWITCH*AND A LOW PRESSURE SWITCH,TO PROTECT AND
HELP EXTEND THE LIFE OF THE PUMP.THE PUMP BOX ALSO HAS A SOLENOID VALVE TO STOP WATER GOING
THROUGH THE SYSTEM WHEN THE PUMP IS NOT WORKING.
*A FLOAT VALVE IS NEED ONE THE STORAGE TANK TO MAKE THE PUMP STOP UNDER HIGH PRESSURE
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RO-MAN REVERSE OSMOSIS SYSTEM INSTALLATION GUIDE
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RO _M AN
M EM BRANE HO USING 2
FEED WATER SUPPLY (RED)
300 GPD SYSTEM
WITH PUMP BOX
200GPD SYSTEMSONLYHAVETWO MEMBRENS
GAUGE
Se d i m e n t
CCB
CBR2
RO _M AN
M EM BRANE HO USING 1
RO _M AN
M EM BRANE HO USING 3
PRO D UC T W ATER (BLUE)
RESTRIC TOR
FLUSH VALVE
WASTE WATER (GREEN)
PUMP
BOX
HOW DO YOU KNOW HOW PURE YOUR WATER IS WHEN USING YOUR RO SYSTEM?
WE MEASURE HOW WELL RO SYSTEMS WORK WITH A “TOTAL DISSOLVED SOLIDS”(TDS)
METER,WITHOUT MEASURING HOW WELL YOUR WATER FILTER IS RUNNING YOU ARE GOING
THROUGH THE PROCESS OF MAKING PURE WATER WITHOUT KNOWING IF IT IS ACTUALLY
PURE…
TOTAL DISSOLVED SOLIDS (TDS) ARE THE TOTAL AMOUNT OF MOBILE CHARGED IONS,INCLUDING MINERALS,
SALTS OR METALS DISSOLVED IN A GIVEN VOLUME OF WATER,EXPRESSED IN UNITS OF MG PER UNIT VOLUME
OF WATER (MG/L), ALSO REFERRED TO AS PARTS PER MILLION (PPM). TDS IS DIRECTLY RELATED TO THE
PURITY AND QUALITY OF WATER AND WATER PURIFICATION SYSTEMS AND AFFECTS EVERYTHING THAT
CONSUMES,LIVES IN,OR USES WATER,WHETHER ORGANIC OR INORGANIC

RO-MAN REVERSE OSMOSIS SYSTEM INSTALLATION GUIDE 12
QUESTIONS AND ANSWERS ABOUT TDS IN WATER:
WHAT ARE TOTAL DISSOLVED SOLIDS?
1. "DISSOLVED SOLIDS"REFER TO ANY MINERALS,SALTS,METALS,CATIONS OR ANIONS DISSOLVED IN WATER.
THIS INCLUDES ANYTHING PRESENT IN WATER OTHER THAN THE PURE WATER (H20) MOLECULE AND
SUSPENDED SOLIDS.(SUSPENDED SOLIDS ARE ANY PARTICLES/SUBSTANCES THAT ARE NEITHER DISSOLVED
NOR SETTLED IN THE WATER,SUCH AS WOOD PULP.)
2. IN GENERAL,THE TOTAL DISSOLVED SOLIDS CONCENTRATION IS THE SUM OF THE CATIONS (POSITIVELY
CHARGED)AND ANIONS (NEGATIVELY CHARGED)IONS IN THE WATER.
3. PARTS PER MILLION (PPM)IS THE WEIGHT-TO-WEIGHT RATIO OF ANY ION TO WATER.
4. TDS IS BASED ON THE ELECTRICAL CONDUCTIVITY (EC) OF WATER.PURE H20HAS VIRTUALLY ZERO
CONDUCTIVITY.CONDUCTIVITY IS USUALLY ABOUT 100 TIMES THE TOTAL CATIONS OR ANIONS EXPRESSED AS
EQUIVALENTS.TDS IS CALCULATED BY CONVERTING THE EC BY A FACTOR OF 0.5 TO 1.0 TIMES THE EC,
DEPENDING UPON THE LEVELS.TYPICALLY,THE HIGHER THE LEVEL OF EC, THE HIGHER THE CONVERSION
FACTOR TO DETERMINE THE TDS.
WHERE DO DISSOLVED SOLIDS COME FROM?
1. SOME DISSOLVED SOLIDS COME FROM ORGANIC SOURCES SUCH AS LEAVES,SILT,PLANKTON,AND
INDUSTRIAL WASTE AND SEWAGE.OTHER SOURCES COME FROM RUNOFF FROM URBAN AREAS,ROAD SALTS
USED ON STREET DURING THE WINTER,AND FERTILIZERS AND PESTICIDES USED ON LAWNS AND FARMS.
2. DISSOLVED SOLIDS ALSO COME FROM INORGANIC MATERIALS SUCH AS ROCKS AND AIR THAT MAY CONTAIN
CALCIUM BICARBONATE,NITROGEN,IRON PHOSPHOROUS,SULPHUR,AND OTHER MINERALS.MANY OF THESE
MATERIALS FORM SALTS,WHICH ARE COMPOUNDS THAT CONTAIN BOTH A METAL AND A NON-METAL.SALTS
USUALLY DISSOLVE IN WATER FORMING IONS.IONS ARE PARTICLES THAT HAVE A POSITIVE OR NEGATIVE
CHARGE.
3. WATER MAY ALSO PICK UP METALS SUCH AS LEAD OR COPPER AS THEY TRAVEL THROUGH PIPES USED TO
DISTRIBUTE WATER TO CONSUMERS.
4. NOTE THAT THE EFFICACY OF WATER PURIFICATIONS SYSTEMS IN REMOVING TOTAL DISSOLVED SOLIDS WILL
BE REDUCED OVER TIME,SO IT IS HIGHLY RECOMMENDED TO MONITOR THE QUALITY OF A FILTER OR
MEMBRANE AND REPLACE THEM WHEN REQUIRED
1. TASTE/HEALTH HIGH TDS RESULTS IN UNDESIRABLE TASTE WHICH COULD BE SALTY,BITTER,
OR METALLIC.IT COULD ALSO INDICATE THE PRESENCE OF TOXIC MINERALS.
THE RECOMMENDED MAXIMUM OF TDS IN WATER IS 500MG/L (500PPM).
2. FILTER PERFORMANCE TEST YOUR WATER TO MAKE SURE THE REVERSE OSMOSIS OR OTHER TYPE
OF WATER FILTER OR WATER PURIFICATION SYSTEM HAS A HIGH REJECTION
RATE AND KNOW WHEN TO CHANGE YOUR FILTER (OR MEMBRANE)
CARTRIDGES.
3. HARDNESS HIGH TDS INDICATES HARD WATER,WHICH CAUSES SCALE BUILD-UP IN PIPES
AND VALVES,INHIBITING PERFORMANCE.
4. AQUARUMS ACONSTANT LEVEL OF MINERALS IS NECESSARY FOR AQUATIC LIFE.THE
WATER IN AN AQUARIUM SHOULD HAVE THE SAME LEVELS OF TDS AND PHAS
THE FISH AND REEF'S ORIGINAL HABITAT.
5. HYDROPONICS TDS IS THE BEST MEASUREMENT OF THE NUTRIENT CONCENTRATION IN A
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HYDROPONICS SOLUTION.
6. POOLS AND SPAS TDS LEVELS MUST BE MONITORED TO PREVENT MAINTENANCE PROBLEMS.
7. COMMERCIAL/INDUSTRIAL HIGH TDS LEVELS COULD IMPEDE THE FUNCTIONS OF CERTAIN
APPLICATIONS.
8. COLLOIDAL SILVER WATER TDS LEVELS MUST BE CONTROLLED PRIOR TO MAKING COLLOIDAL SILVER.
RO-MAN THIN FILM MEMBRANE INFORMATION
Permeate Flow Rate
Gals/Day US Litres/Day Minimum Salt
Rejection (%) Stabilized Salt Rejection (%)
100 380 96 98
75 283 96 98
50 189 96 98
36 136 96 98
.
DIMENSIONS
L
Inches Cm
I
Inches Cm
D
Inches Cm
11.63 295 10.0 250 1.8 46
RECOMMENDED OPERATION CONDITIONS
Maximum Operating Pressure 125 PSI (0.86
MPa)
Maximum Feed Flow Rate 2 gpm
Maximum Operating
Temperature 113°F (45°C)
Maximum Feed Water Turbidity 1 NTU
Maximum feed water silt density index
(15 min.) 5
Chlorine Tolerance 0
Feed water pH range 2-11
Minimum brine flow to permeate flow
atior 4:1
Temperature Correction Factor

RO-MAN REVERSE OSMOSIS SYSTEM INSTALLATION GUIDE 14
PERFORMANCE OF THE REVERSE OSMOSIS MEMBRANE ELEMENT IS AFFECTED BY TWO KEY FACTORS;
TEMPERATURE OF THE FEED WATER AND THE NET DRIVING PRESSURE ACROSS THE ELEMENT. THESE TWO
FACTORS MUST BE TAKEN INTO ACCOUNT BEFORE COMPARING OR EVALUATING THE PERFORMANCE OF A
MEMBRANE ELEMENT OR A REVERSE OSMOSIS SYSTEM.
THE WATER TEMPERATURE IS ONE OF THE KEY FACTORS IN THE PE5RFORMANCE OF THE REVERSE OSMOSIS
MEMBRANE ELEMENT. THE HIGHER THE TEMPERATURE,THE MORE THE PRODUCT FLOW AND VICE VERSA. ALL
REVERSE OSMOSIS MEMBRANE ELEMENTS AND SYSTEMS ARE RATED AT 77º FAHRENHEIT (25ºCELSIUS). TO
FIND THE MEMBRANE PERMEATE RATE AT A DIFFERENT TEMPERATURE,FOLLOW THESE STEPS:
FIND THE TEMPERATURE CORRECTION FACTOR (TCF) FROM THE TABLE BELOW.
DIVIDE THE RATED PERMEATE FLOW AT 77 DEGREES FAHRENHEIT BY THE TEMPERATURE CORRECTION
FACTOR. THE RESULT IS THE PERMEATE FLOW AT THE DESIRED TEMPERATURE.
Feed Water
Temperature
ºC ºF Correction Factor
5 41.0 2.58
6 42.8 2.38
7 44.6 2.22
8 46.4 2.11
9 48.2 2.00
10 50.0 1.89
11 51.8 1.78
12 53.6 1.68
13 55.4 1.61
14 57.2 1.54
15 59.0 1.47
16 60.8 1.39
17 62.6 1.34
Feed Water
Temperature
ºC ºF Correction Factor
18 64.4 1.29
19 66.2 1.24
20 68.0 1.19
21 69.8 1.15
22 71.6 1.11
23 73.4 1.09
24 75.2 1.04
25 77.0 1.00
26 78.8 0.97
27 80.6 0.94
28 82.4 0.91
29 84.2 0.88
30 86.0 0.85
EXAMPLE
QUESTION
FOR A THIN-FILM MEMBRANE PERMEATE RATE AT 77 DEGREES FAHRENHEIT =100 GALLONS/DAY. WHAT IS
THE PERMEATE RATE AT 59 DEGREES FAHRENHEIT?
ANSWER
TEMPERATURE CORRECTION FACTOR (FROM TABLE)=1.47
PERMEATE FLOW AT 59 DEGREES FAHRENHEIT = 100÷1.47 =68.03 GALLONS (US)/DAY
Net Pressure Correction
PERFORMANCE OF THE REVERSE OSMOSIS MEMBRANE ELEMENT IS AFFECTED BY TWO KEY FACTORS;
TEMPERATURE OF THE FEED WATER AND THE NET DRIVING PRESSURE ACROSS THE ELEMENT. THESE TWO
FACTORS MUST BE TAKEN INTO ACCOUNT BEFORE COMPARING OR EVALUATING THE PERFORMANCE OF A
MEMBRANE ELEMENT OR A REVERSE OSMOSIS SYSTEM.
THE HIGHER THE NET PRESSURE ON A MEMBRANE ELEMENT,THE HIGHER THE PERMEATE RATE. THE OSMOTIC
PRESSURE OF WATER CAN BE CALCULATED ROUGHLY BY THE FOLLOWING RULE OF THUMB:
OSMOTIC PRESSURE (PSI) =TOTAL DISSOLVED SOLIDS (TDS) ÷100
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RO-MAN REVERSE OSMOSIS SYSTEM INSTALLATION GUIDE 15
TO ESTIMATE THE EFFECT OF NET PRESSURE,FOLLOW THESE STEPS:
CALCULATE THE NET PRESSURE AT WHICH THE MEMBRANE IS RATED (PR)
PR=(RATE PRESSURE)-(OSMOTIC PRESSURE OF TEST SOLUTION)
Nominal Rejection Characteristics of Thin Film Composite Reverse Osmosis Membranes
Ion % Rejection
Calcium 93-99
Sodium 92-98
Magnesium 93-98
Potassium 92-96
Manganese 96-98
Iron 96-98
Aluminium 96-98
Copper 96-99
Nickel 96-99
Cadmium 93-97
Silver 93-96
Zinc 96-98
Mercury 94-97
Hardness Ca&Mg 93-97
Radioactivity 93-97
Chloride 92-98
Ion 92-98
Bromide 90-95
Phosphate 95-98
Cyanide 90-97
Sulphate 96-99
Thiosulfate 96-98
Silicate 92-95
Silica 90-98
Nitrate 90-95
Boron 50-70
Borate 30-50
Fluoride 92-95
Polyphosphate 96-98
Orthophosphate 96-98
Chromate 85-95
Bacteria 99+
Lead 95-98
Arsenic 50-90
NOTE: THE ABOVE PERCENT REJECTION IS FOR REFERENCE ONLY.ACTUAL REJECTION WILL DEPEND
HEAVILY ON THE EXACT CHEMISTRY,TEMPERATURE,PRESSURE AND TDS CONTENT OF THE FEED WATER.
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