Spectra Watermakers Aquifer 200 DC User manual

1
Katadyn Desalination, LLC
Spectra Watermakers
PH 415.526.2780
FX 415.526.2787
www.spectrawatermakers.com
Revised 09.15.20
PT-SMN-AQ
Aquifer 200 DC
Operation Manual

2

3
Table of Contents
Installaon
Operaon
Geng Started.................................................................................................................... 4
Introducon ........................................................................................................................ 5
Feed Water Path ................................................................................................................. 6
Product Water Path ............................................................................................................ 7
Seng Up the Aquifer ........................................................................................................ 8
Electrical.............................................................................................................................. 9
Page Number
New Systems Start Up and Tesng................................................................................... 10
Normal Operaon ............................................................................................................ 11
Maintenance..................................................................................................................... 12
Service & Maintenance
Short Term Storage Procedures........................................................................................ 14
Introducon to Spectra Chemicals………………………………………........................…………...…..15
Long Term Storage............................................................................................................ 16
Winterizing........................................................................................................................ 17
Membrane Cleaning.......................................................................................................... 18
Suggested Spares .............................................................................................................. 19
Troubleshoong…………………………………………………………………………................................. ..20
Poor Water Quality ........................................................................................................... 21
Flow Test........................................................................................................................... 22
Service Bullens........................................................................................................... 24-28
Plasc Tube Fing Instrucons………………………………………………………...........................….29
High Pressure Tube Fing Assembly Instrucons…………………………...................……………30
Parts breakdown for Aquifer systems ......................................................................... 31-37

4
Unpack the system and inspect it to make sure that it has not been damaged in shipment.
Refer to the shipping list for your system to make sure you have received all of the compo-
nents listed. Do not discard any packaging unl you have found and idened all of the
parts. The small installaon parts are listed on the kit list.
Warning! Spectra Watermakers will not be held responsible for shortages and or freight
damage that are not reported within thirty days of the ship date.
Study the system layout diagram, component photos and descripons before beginning
your installaon. This will assist you in understanding the funcon of each component.
Geng Started
Aquifer Shipping List
• Aquifer Portable Watermaker in Pelican Case
• Hand held Salinity monitor
• Sucon hose (25’) with strainer and Banjo connector
• Brine discharge hose (25’) with Banjo connector
• 1/4 product hose (15’)
Intake Screen
and Filter
Sucon Hose
Product hose
Brine discharge
hose

5
Originally developed for ocean voyaging yachts, the Spectra Aquifer 200 Portable
Watermaker is both a desalinator and a water purier. It is capable of producing high quality,
good tasng drinking water from virtually any feed water source including ocean, rivers, lakes,
or brackish wells. It will eecvely separate out salts, organic chemicals, inseccides and
pescides, parasites and their cysts, bacteria, and viruses. It does not remove non-ionized
heavy metals or gases.
The watermaker pumps approximately 1.5 gallons (6 liters) of feed water per minute to the
reverse osmosis membrane and ten percent of this water passes through the membrane as
puried product water and the remaining water is returned to the feed water source as
slightly concentrated brine. The brine contains whatever was in the feed water with 10% of
the fresh water removed.
Feed water is ltered using a three-stage process. A strainer rst keeps out large debris, and
keeps the sucon hose several inches o the boom, then the water passes through an 80
mesh screen, then a 5 micron pre-lter protects the Clark pump from silt, algae and abrasive
parcles before water goes through the membrane and is separated into pure fresh water and
the brine discharge .
Aquifer Power Pack is equipped with a baery, solar charge control and an AC power supply
that will charge the baery when connected to any AC source (100-300vac). The system also
comes with a collapsible solar panel that will run the unit as long as there is direct sunlight.
If the baery is fresh and fully charged the watermaker can be operated directly from the
baery for two or more hours without an external power source.
In order to prevent damage to the watermaker, the feed water should never contain chlorine,
bleach, or any other strong oxidizer, which will damage the membrane. The watermaker
should never be used with feed water saler than sea water, such as is found in the Great Salt
Lake, as operang pressures will be too high. Oil in the feed water will also damage the
membrane.
Introducon to the Aquifer 200 PPS
Fold-out prelter
Feed Pump with
baery underneath
Solar Charge Control
AC power Supply Membrane pressure vessel
Clark Pump
Accumulator

6
Feed Water Strainer and
Screen
5 micron lter and
housing
Spectra Clark Pump &
Membrane Assembly
Pressure Relief Valve
Brine Outlet
Aquifer 200 Feed Water Path
Quick Disconnect
Pressure Gauge
Accumulator
Feed Pump
Product Water Outlet

7
Product Water Path
Product Outlet.
Make sure that there is no restricon in the product line.
The hose should be lling vessels or a tank through an air
gap. Do not plumb this hose into the boom of a tank,
allow the water to fall into the top of the tank. Pressure
in the product tubing must never exceed 5psi (0.3bar) at
any me, (running or stopped) or the membrane will be
permanently damaged.
There are four (1/8” NPT)
product water ports (2 in each
end cap)
Clear product water tubing with quick-connect
Product Flow meter

8
SETTING UP THE AQUIFER
CHOOSING A SITE
Your water source should be as free of suspended sand, silt, algae etc., as possible for longer
prelter life. If making water from a bay, lake, or stream choose a locaon as deep as possi-
ble. Avoid areas with surf or chop. The Aquifer Feed Pump is capable of liing the feed water
not more than 10 vercal feet. When seng up the watermaker choose a spot as near the wa-
ter as possible, but do not place the case in the water. It is beer to run a long extension cord
from your power source than to run long hoses to the feed water source. When making water
on a sand beach a small pit can oen be dug in the sand which will ll with clean water. The
water owing into the pit can be used as feed water and the water will be quite clean aer the
system has been running for a short me.
SETTING UP
Note: When connecng the sucon hose Quick Connect ngs be sure they are clean and
free of sand or debris so the seals on the ngs are not damaged! The at end of the male
ng seals against the at rubber seal inside the female ng so both surfaces need to be
clean.
Using the quick connect ngs aach the three hoses: Sucon hose with strainer and lter
basket, brine discharge, and product hose.
You can run the system (as shown below) into a bucket to check operaon. In this case the
stub hoses will be long enough to reach the bucket without aaching the hose extensions.
This is also the process used for cleaning or storage
soluon. When fresh water ushing the system the
black spiral sucon hose is used to draw in the ush
water.
Brine Discharge
Sucon Hose
Product Hose

9
Electrical
The AC power supply accepts input voltages from 100-
300 Volts AC, 50/60Hz. Connector supplied is for US-
style 110V AC. Other connectors may be aached to
the input connector. The AC power supply charges the
baery through the Solar Controller. To charge the
baery or run the system on AC power just plug it into
an outlet and turn on the main power switch. The
baery is not connected if the MAIN POWER switch is
o.
There are two 15A fuses, one for the baery and one
for the pump.
Baery Fuse
Note: Unit is shipped with the baery fuse removed
Pump Fuse
For purchased Solar Power
Pack models only, the
included Solar panel ts into
the lid of the case. Unfold and
connected to the cables in the
case.
The Solar Power connectors
are unique and they will only
connect one way.
The Solar Charge Controller will show when the
baery is charging (the green light ashes) and the
level of baery charge.
The baery must be fully charged for
storage.
Note that the Main Power switch must be on for
the baery to charge or for the system to operate.
The power switch may blink if it is not turned on
and power is connected.
The pump is controlled by the switch on the right.
Both lights must be o for storage or
the baery will lose it’s charge.

10
Warning! Your watermaker shipped from the factory with a non-toxic potable water system pre-
servave. Damage may occur if this preservave is not ushed out and the membrane is pres-
surized with preservave in it.
DO NOT OPERATE the Aquifer system if the feed water could contain oil.
1. Locate a non-chlorinated water source. If the water has been chlorinated or chemically
treated, replace the 5 micron lter with a Charcoal Filter element .
• Place the strainer end of the Feed Water Hose into the feed water source far enough
below the surface to prevent air from being pulled in. Place the end of the brine hose at
lease 2 meters (6 .) away so that the brine does not mix directly back in with the feed
water.
• Aach the product hose and place the end of it so that any product will drain on the
ground (with the system unpressurized the amount of product during the ush will be
small)
• Ensure that the pressure relief valve is open 1 turn.
• Plug in the AC power cord, connect solar panel, or ensure that the baery is fully charged.
2. Turn on the pump and check that it is primed by inspecng the brine discharge. About 1.5
gpm (6 lpm) of water should be being discharged with a pulsaon every few seconds.
3. Run the system without pressure for 20 minutes to purge the storage chemicals (4-6 hours
if stored for an extended period with propylene glycol). The system should have an open
ow pressure on the gauge of about 20 PSI (1.2 bar). Water may drip from the product tube.
4. Close the pressure relief valve. The pressure should rise to 60-80 PSI (4.2-5.7 bar) if the
feed water is sea water. If the feed water is brackish or fresh the pressure will be lower. Aer
several minutes, water should begin to ow out of the product water tube.
5. Allow the system to run for 5-10 minutes to purge the product water of preservave, and
then test the product with your handheld salinity tester. When the product is below 750
PPM it is considered potable and may be diverted to the water container for human
consumpon.
Aquifer New System Start-Up and Tesng
Open one turn to Purge PreservaveRemove Tag and split washer

11
Normal Operaon From a Large Body of Water
If the system has been pickled or stored or contains cleaning compounds, use the “New Sys-
tem Startup” procedure.
1. Any source of oil-free feed water not saler than sea water may be used. Do not use wa-
ter containing large amounts of heavy metals, such as mine tailing runo.
2. Place the intake strainer and screen in the feed water source and the brine discharge hose
at least 2 meters (6.) away from it. Connect the product tube so you are prepared to col-
lect it (let the rst 5 minutes of product water run onto the ground).
3. Open the pressure relief valve 1 full turn and start the feed pump. When there is good
ow and no bubbles in the brine discharge close the valve.
4. Aer 5 minutes check the product water with your handheld salinity tester. When it is be-
low 750 ppm the water is good to drink and you may begin to ll containers.
5. Run the system unl you have lled your container or have made enough to meet your
requirements and 10 liters (3 gallons) for ushing.
6. Make a note of the feed pressure with a clean lter element and change the lter when
the pressure rises more than 5 psi (0.3 bar).
Shung Down
1. You will need 10 liters (3 gallons) of water in a container, which will be used to ush the
watermaker. Use only non-chlorinated water for ushing, product water is ideal.
2. Place the sucon hose in the ush water (see page 9) and start the feed pump.
3. Flush unl the container is empty and then stop the feed pump.
4. Disconnect the hoses and connect the short sucon hose to the brine discharge so water
does not leak into the case. Leave the lid open unl the inside of the case is dry.
The system can sit for up to ve days without further aenon. The system should be ushed
aer every use. You may noce that the system output is higher while is plugged in to AC
power, as the pump will run faster with more power.
Always ensure that the baery is fully charged aer the watermaker is shut down to extend
baery life.
Aquifer Operaon
Prelter
Product (Fresh)
Water Hose
Brine Discharge
Hose
Feed water
sucon Hose
Main Power Switch
Pump On/O Switch
Pressure Gauge
Product Flow Meter

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Maintenance
The Seawater Strainer
The sea water strainer’s stainless steel element should be inspected, opened, and cleaned as
needed. Check frequently during operaon.
The Prelter
Service the prelter on a regular basis. The pressure will rise on the pressure gauge when the
lter becomes dirty. Extremely dirty lters will harm system performance and may cause the
feed pump to cycle on the high pressure cut-out switch. Do not leave dirty lters in the ma-
chine during long idle periods, as biological contaminaon will result.
To service the lter, swing it out of the case, open the housing, and discard the old lter. Clean
out the housing bowl, reassemble the housing with a new 5 micron lter element. Leave dry
unl next startup.
Use only Spectra approved lters or you may void your warranty. The lter may be cleaned
several mes by soaking it in water in a bucket. Occasionally, lightly lube the lter housing O-
ring with silicone grease.
General
Periodically inspect the enre system for leakage and chafe on the tubing and hoses. Re-
pair any leaks you nd as soon as praccal. Some crystal formaon around the Clark Pump
blocks is normal. Wipe down any salt encrusted areas with a damp cloth. If any rust ap-
pears at the stainless steel ngs, clean them up promptly. Keep the inside of the case dry
and salt free to protect the electrical components inside.
The Feed Pump and Clark Pump
The feed water pump and the Clark Pump require no roune maintenance except inspecon
for leaks. Tighten any hose clamps or ngs that show signs of leakage. The high pressure
ngs threaded into the Clark Pump have O-ring seals with a straight thread. These should
never leak and should never be over ghtened. If one of the tube nuts starts to leak, it can be
un-threaded, sealed with a bit of silicone grease or silicone seal, and ghtened with two
wrenches very ghtly.

13
The Membranes
The membranes need to be cleaned only when feed pressure begins to rise due to fouling or
the product quality degrades. The primary causes of fouling are biological growth and scaling.
Biological growth occurs when the system is le unused without ushing or pickling. Fouling
from mineral scaling will form when the feed water is “hard” or high in carbonates. Very small
“colloidal metal” and metal oxide parcles can also plug the pores in the membrane. Monitor
the product salinity and feed pressure for higher than normal readings for the exisng condi-
ons. Other condions can cause high pressure such as cold feed water or clogged lters. Low
product ow is usually due to low voltage, damaged feed pump or Clark Pump. Look for all
other causes before cleaning the membrane. Membrane life can be shortened by excessive
cleaning.
There are two types of cleaners: acid and alkaline. The acid cleaner (SC-3) will remove mineral
scaling. The alkaline cleaner (SC-2) is used to remove biological by-products, oil, and dirt par-
cles that get past the prelters. If membrane performance is reduced and it has not been
“pickled” recently, cleaning with both chemicals is recommended. The acid cleaner should be
used rst. Colloidal Metals and Metal Oxides are very dicult to remove. If the membrane
fails to respond to both cleanings, this is an indicaon of another problem with the system, or
that it is me to replace the membrane. Contact Spectra Watermakers before removing a
membrane.

14
Short Term Storage
Fresh Water Flush
The purpose of the fresh water ush is to replace the sea water in the watermaker with fresh
water whenever the system is not operang. The watermaker will last longer and operate
beer if it is always lled with fresh water between uses. If the watermaker is not used for
more than ve days it should be ushed again to ensure that the water inside stays fresh and
oxygenated. In this way, the water maker can be kept ready for immediate use indenitely.
1. You will need 10 liters (3 gallons) of water in a container, which will be used to ush the
watermaker. Use only non-chlorinated water for ushing, product water is ideal.
2. Place the sucon hose in the ush water (see page 9) and start the feed pump.
3. Flush unl the container is empty and then stop the feed pump.
4. Disconnect the hoses and connect the short sucon hose to the brine discharge so water
does not leak into the case. Leave the lid open unl the inside of the case is dry.
If the only fresh water available is chlorinated then a Charcoal (or Carbon) lter is required in
the lter housing. Flushing with chlorinated water will damage the membrane.
Aer ve days, if the watermaker has not been used, re-ush following the above procedure.
Remove the hoses, drain them, and stow them away in the case. Insert the hose connecon
plugs in the hose ngs.

15
Introducon to Spectra Chemicals
We use four types of chemicals: SC-1, SC-2, SC-3, and propylene glycol anfreeze. SC-1 and
propylene glycol are for system storage, while SC-2 and SC-3 are for membrane cleaning.
Note: Never use any chemicals with the system pressurized! Always open the pressure relief
valve 1/2 turn. Always follow the instrucons for purging the chemicals as shown in the New
System Startup secon of your owner’s manual.
Storage: SC-1 prevents biological growth when your system is idle. It should not be used as a
cleaning chemical, nor will it protect your system from freezing. A jar of SC-1 is mixed with 1 to
2 gallons of product or dechlorinated fresh water in a bucket and circulated through the sys-
tem for 10 minutes. This treatment will protect the system for six months, aer which the SC-1
treatment must be repeated. To use SC-1, follow the instrucons for Ventura MPC Storage
Procedure on the following page.
Spectra systems should be stored with propylene glycol if freezing is likely to occur. This is a
food grade anfreeze used to winterize RV’s, boats, and cabins. Propylene glycol also works
very well for prevenng biological growth in warm climates and is good for one year. See Win-
terizing with Anfreeze (OP-1 document on the Spectra website).
Note: Do not use metasodium-bisulfate, Citric Acid, or any other storage chemical not sup-
plied by Spectra. These chemicals, used to store other watermaker brands, are very acidic and
will damage the Clark Pump and void the warranty.
Cleaners: Cleaning can be detrimental to the membrane and shorten its life. Avoid unneces-
sary cleaning, and avoid cleaning as a diagnosc tool.
SC-2 is an alkaline cleaner used to remove light oil, grime and biological growth. It is most
eecve if heated to 120 deg. F, which is dicult on a boat. In most cases the water quality
will increase in PPM (salinity) aer an SC-2 cleaning. Aer a few hours it should recover to
near the level it produced before the cleaning.
SC-3 is an acid cleaner used to remove mineral and scale deposits. In most cases this is used
rst and if there is no improvement, go on to the SC-2. SC-3 will in most cases lower the prod-
uct PPM and overall pressures. Scaling is a slow process that may take several months or
years. SC-3 is less harmful to the membrane and will almost always improve the performance
of an older membrane.
For cleaning with either SC-2 or SC-3, see the Cleaning Procedure.

16
Long Term Storage Procedures
Watermakers are best run connuously. When not in use, biological growth in the membrane
is the leading cause of membrane fouling. A warm environment will cause more growth than a
cold environment. If the system is to be le unused for more than ve days, perform the fol-
lowing storage procedure. The procedure introduces a chemical compound into the system
that prevents biological growth. This procedure requires de-chlorinated water. Spectra SC-1 a
special storage compound, formulated to be compable with the modern engineering plascs
and composites in the Spectra pumps. Do not use any substute except propylene glycol
(with no Ethyl Alcohol). If you wish to use glycol for storage, follow the winterizing instrucons
on the container. SC-1 storage compound must be mixed at a rao of 1 packet to 3 gallons
(12L) of fresh water to have the proper soluon for up to six months storage.
Cauon! Avoid contact with skin, eyes, or lungs with the storage chemical.
Aquifer Storage Procedure
The watermaker can be stored for periods up to six months using this procedure.
1. Make or buy 4 gallons of chlorine-free water and put it in a bucket.
2. Place the end of the feed hose in the bucket and the brine hose to drain.
3. Start and run the feed pump unl you have one gallon of fresh water le in the bucket.
4. Mix 1 packet of SC-1 storage compound with the water in the bucket and place the end of
the brine service hose in the bucket.
5. Make sure the pressure relief valve on the
Clark Pump is OPEN (unpressurized)
by turning 1/2 turn counterclockwise
6. Turn on the feed pump. Circulate the storage
chemical in the system for approximately 10
minutes. Turn o the feed pump when n-
ished.
Clean Up
• Remove the 5 micron lter element from its housing and put in a dry one.
• Rinse and dry the inside of the case, being careful not to get water inside the pump motor.
• Charge the baery.
• Remove the hoses, drain them, and stow them away in the case. Insert the hose connec-
on plugs in the hose ngs.

17
Storage and Winterizing with Anfreeze
The watermaker can be stored for up to one year in any climate using this procedure.
1. Put 3 gallons of chlorine-free fresh water into a bucket. Perform a fresh water ush as de-
scribed in the normal operaon secon. Run the feed pump unl the bucket is empty.
2. Pour 2 gallons of low temperature propylene glycol (with no Ethyl Alcohol) potable water
system anfreeze into the bucket.
3. Make sure the pressure relief valve on
the Clark Pump is OPEN (unpressurized)
by turning it 1/2 turn counterclockwise.
4. Start and run the feed pump unl an-
freeze begins to come out of the brine dis-
charge hose.
5. Stop the feed pump. Direct the brine out
put into the bucket.
6. Start the Feed pump and circulate the re-
maining anfreeze for a few minutes unl
well mixed.
7. Stop the feed pump and discard any an-
freeze remaining in the bucket.
8. Blow out or drain the product tubing, as it will not contain anfreeze.
9. Leave the pressure relief valve open.
Clean Up
• Remove the prelter from its housing and replace with a clean dry lter element.
• Rinse and dry the inside of the Aquifer case to prevent corrosion. Do not get the Feed pump
motor wet.
• Remove and drain the service hoses and stow them away in the case. Insert the hose con-
necon plugs in the hose ngs.
• Charge or remove the baery for storage.
Recommissioning
Propylene glycol can be dicult to ush from a membrane, especially aer extended storage
periods. This results in high salinity water (high PPM) and residual avor in the product water.
We recommend ushing the system WITH THE PRESSURE RELIEF VALVE OPEN for 4-6 hours
aer storage with propylene glycol—the longer the beer. If, aer extended ushing, you sll
experience low product water quality, cleaning with SC-2 usually removes all traces of propylene
glycol and returns the salinity to the level it was before storage with propylene glycol. See the
Cleaning Procedure on page 20.

18
Membrane Cleaning
Membrane Cleaning
For normal cleaning, the SC-3 Acid Cleaning Compound is used rst, then the SC-2 Alkaline
Cleaning Compound. If known bio-fouling is present, the SC-2 may be used rst. Using hot
water if possible, up to 120° (45C) is recommended, as it greatly enhances the ability of the
cleaners to do their jobs.
If the history of the system is unknown or it has been le “unpickled” for an extended length
of me and biological growth is present, it is recommended that the system is cleaned with
SC-2, using unchlorinated fresh water before the system is run under pressure. If the housing
is full of smelly discolored water, the system was not properly stored. Install a clean lter.
Check the membrane by running the system for a few minutes in a bucket (see pg.8) and
then examine the brine water: if it’s discolored and smells bad, perform an SC-2 cleaning. If
the brine is fairly clean, the system can be purged, run normally, and checked for perfor-
mance. Clean the membranes only if indicated.
Heang the water is preferable. One way to do this is to nd a camp stove and use a large
stainless steel pot to heat the soluon in. The cleaning soluon throughout the system will
heat as it circulates in and out of the pot. An alternave is to heat the one or two gallons of
inial water to 120° on a stove before mixing in the cleaner and circulang it into the system.
Periodically stop and reheat the soluon.
Spectra cleaning compound (SC-2 or SC-3) must be mixed with fresh water at a rao of 1
container of compound to 3 gallons (12L) of unchlorinated water. When this concentrate is
circulated through the system the chemicals will mix with the water in the system and get
to the correct rao of 8 oz. (250g packet) to 5 gallons (20 liters) of water.
The cleaning procedures are the same for the SC-2 and SC-3 cleaners;
1. Flush the system as shown in the Normal Operaon Secon and make cleaning soluon
as above.
2. Place the inlet service hose, brine discharge service hose, and product hose in the bucket.
3. Make sure that the pressure relief valve is OPEN (un-pressurized).
4. Mix the cleaning chemical in the bucket.
5. Start the system and circulate the chemical through the system for 20 minutes.
6. Allow the system to soak for an hour; or overnight if the chemicals are cold.
7. Run the pump for another 20 minutes.
8. Stop the pump, move the brine discharge hose to a drain and start the pump unl the
bucket is empty.
9. Flush the system using the instrucons for “New System Startup.”

19
Suggested Spares
Short term use, weekends etc.
We suggest a basic cruise kit A. This kit consists of six 5 micron lters, and 2 SC-1 storage
chemicals.
Use for 2 to 6 months at a me.
Two basic cruise kits, one replacement feed pump head.
Longer than 6 months
Addional lters, Oshore Cruising Kit consisng of Clark Pump seals, O-rings, tools and
membrane cleaning chemicals. One replacement strainer.
Spectra Watermakers parts list:
SC-1 STORAGE CHEMICAL KIT-CHEM-SC1
SC-2 CLEANER KIT-CHEM-SC2
SC-3 CLEANER KIT-CHEM-SC3
BASIC CRUISE A KIT-BCK-A
5 MIC FILTER FT-FTC-5
CHARCOAL FILTER FT-FTC-CC
FEED PUMP HEAD PL-PMP-SFPH
FILTER HOUSING O-RING SO-FHS-10H
OFF SHORE KIT KIT-OFFSH
20” MEMBRANE FT-MB-20
SUCTION STRAINER KIT-AQ-ATNASSEM
Part Number

20
Troubleshoong
Symptom Cause Remedy
Feed pump runs but no pressure
No lights on the switches
Pump will not run
Feed pump air locked
Pressure relief valve open
Baery fuse blown
Baery dead
Main Power switch o
Pump Fuse blown
Open pressure relief valve, run unl
there are no bubbles in the line and
then close valve
Close valve
Replace fuse
Be sure baery is charged before
storage
Be sure lights are o on switches
when storing
Main Power switch on
Replace Fuse
Feed pump starts but shuts down
on high pressure
Prelter clogged
Closed valve or blockage in ow
Change lter
Check ow path for closed valve or
kink in hose
Low water producon
High feed pressure
Strainer or prelter clogged Service prelter and strainer
Low water producon,
Low pressure
Pressure relief valve parally open
Worn pump head
Close valve
Check ow, should be 1.4 GPM
Close o discharge hose and pres-
sure should build to 120psi, if not
the pump head needs to be re-
placed
Water producon normal, but
high feed pressure and/or high
amperage
Cold seawater temperature
Fouled membrane
Normal condion
Clean membrane
Water producon normal, but
lower pressure, and lower amper-
age
Warm sea water or brackish water. Normal condion
Asymmetrical pressure and ow
readings between pump shis
Check valve leaking
Failed annular ring
Sha seal leaking
Contact dealer or see the Clark
Pump repair manual.