Precision Water Distillers PWS 12-20 User manual

Part No. 097124-
Series: 0015
Printed in Canada
01-20-2006
Copyright © 2003
Precision
Water Distillers
Owners’ Guide
Model: PWS 12-20
Part No. 510001
Series: 0015
Manufactured By:
Precision Design & Manufacturing Inc.
9024-100 Street,
Westlock, AB, Canada
T7P 2L4
http://www.precisioncanada.com
e-mail: [email protected]
Phone: [phone]
FAX: [phone]
Please read this Owners’ Guide
completely
before installing or operating
your Precision Water Distiller.
Specifications are subject to change
without notice.

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TABLE OF CONTENTS .................................................................................................................................................... 3
INTRODUCTION............................................................................................................................................................... 4
RECORDS......................................................................................................................................................................... 5
PRECISION WATER DISTILLER WARRANTY ................................................................................................................ 6
IMPORTANT SAFETY PRECAUTIONS............................................................................................................................ 7
ADDITIONAL SAFETY RECOMMENDATIONS ......................................................................................................................... 7
PRECISION WATER DISTILLER OWNERS' SUMMARY................................................................................................. 8
WATER DISTILLER FEATURES ...................................................................................................................................... 9
10 FACTORS THAT WILL AFFECT YOU WATER DISTILLER PRODUCTION ............................................................. 10
UNDERSTANDING HOW PURE WATER IS PRODUCED.............................................................................................. 12
FINDING A GOOD INSTALLATION LOCATION ............................................................................................................ 13
UNPACKING YOUR WATER DISTILLER....................................................................................................................... 14
WATER DISTILLER INSTALLATION TOOLS ................................................................................................................ 16
STORAGE TANK ASSEMBLY........................................................................................................................................ 17
MANUAL DRAIN VALVE TUBE INSTALLATION........................................................................................................... 20
FEED WATER LINE CONNECTION ............................................................................................................................... 21
BOILING TANK LID INSTALLATION ............................................................................................................................. 24
STORAGE TANK LID REMOVAL AND INSTALLATION................................................................................................ 24
WATER DISTILLER WALL STABILIZER ....................................................................................................................... 25
OPERATION ................................................................................................................................................................... 26
CONTROLS -POWER,FAN,WATER,OVERHEAT RESET AND FUSE..................................................................................... 26
STORAGE TANK DRAIN VALVE........................................................................................................................................ 28
BEFORE INITIAL WATER DISTILLER OPERATION ............................................................................................................... 29
NORMAL OPERATION ..................................................................................................................................................... 30
MAINTENANCE AND CLEANING .................................................................................................................................. 31
REGULAR INSPECTION AND CLEANING OF BOILING TANK ................................................................................................. 31
CLEANING THE BOILING TANK USING CLEANER DESCALER............................................................................................... 32
REPLACING CHARCOAL IN CHARCOAL FILTER CANISTER.................................................................................................. 34
STERILIZATION............................................................................................................................................................... 35
Liquid Sterilization of Storage Tank and Optional Pump Water Line System..................................................... 35
Steam Sterilization of Water Distiller Head ........................................................................................................... 36
Steam Sterilization of Water Distiller Head, Filter Canister and Storage Tank ................................................... 38
Maintenance Schedule Table................................................................................................................................. 40
Owner Maintenance Record Table......................................................................................................................... 40
TROUBLESHOOTING .................................................................................................................................................... 41
OPTIONAL ACCESSORIES ........................................................................................................................................... 46
PWS APK-1 PUMP KIT.................................................................................................................................................. 46
PWS APK-1 PUMP KIT INSTALLATION ............................................................................................................................ 47
PWS AED-1 AUTOMATIC ELECTRIC DRAIN KIT INSTALLATION ......................................................................................... 53
ADDITIONAL OPTIONS .................................................................................................................................................... 57
Sediment Pre-Fitler Assembly, Charcoal Post-Filter Assembly, Pressure Accumulator, Water Distiller Cleaner
and Descaler, Pure Activated Coconut Charcoal for Refillable Charcoal Filter Canisters and Tee Valve ........ 57
SPECIFICATIONS AND TECHNICAL INFORMATION................................................................................................... 59
WIRING LIST AND SCHEMATIC ........................................................................................................................................ 60
INDEX ............................................................................................................................................................................. 62
WARRANTY REGISTRATION CARD............................................................................................................................. 63
Table of Contents

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Introduction
Congratulations on the purchase of the most advanced water distiller in the
industry! When installed and maintained properly, your Precision Water Distiller
will provide years of safe, trouble free service. It is important to observe and
follow the safety and maintenance instructions carefully. If you have any
questions or concerns regarding installation or operation of your water distiller,
please contact your dealer.
All 120 VAC Precision Water Distillers are certified to cCSAus Classes 2831-02
and 2831-82 under the Canadian and American Electrical Code.
All water distillers are factory tested with a high voltage ‘Dielectric Strength Test’
and ground fault test prior to shipping.
Precision Water Distillers have been tested by EnviroTest Laboratories which
found the water distillation units to be very effective water treatment systems
capable of removing both harmful pathogens and toxic chemicals from water. In
their study all pathogens were eliminated and none were found in the distilled
water. The water distillation system also effectively removed all of the soluble
inorganic chemicals tested. Removal efficiencies of 99% or greater were
achieved for almost every chemical tested.
All Precision Water Distillers are operated and tested at the factory and have
produced distilled water to make sure all components are functioning properly.
All water distillers are wiped clean before shipping, but there may be a water ring
inside the boiling tank. There may also be an off-colour line at the seams of the
storage and boiler tank. This is caused by the TIG welding process used during
manufacturing. This is normal and is not a sign of a problem. Follow all the
Before Initial Water Distiller Operation procedures and you will have pure
water in no time.
Your Precision Water Distiller must be installed according to any Local, State or
Provincial Regulations.

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Records
Please record all of the important information below to assist you and the service
center in case there is any service work required in the future. All of the
information is required to properly identify your water distiller and will make
servicing much easier. The information is located on the serial plate on the side
of the water distiller head. The Serial Plate Location Diagram below shows a
sample serial plate.
Serial Plate Location Diagram
Model: PWS 12-20
Series: eg: 0013
Serial Number: eg: 0123012
Date of Purchase: ___________________________________________________
Dealer Purchased From: _____________________________________________
Optional Pump Serial No: __________________________________________
Series: __________________________________________
Optional Drain Serial No: __________________________________________
Series: __________________________________________
SERIAL PLATE LOCATION DIAGRAM - 8GPD

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Precision Water Distiller Warranty
-The warranty for your Precision Water Distiller
covers defects in materials for two (2) years on
all parts and labor to the original purchaser.
-Stainless Steel parts are covered by a 15 year
pro rated warranty. This covers all stainless
steel parts such as the boiling and storage
tank. With this warranty it is the
responsibility of the distiller owner to properly
maintain the distiller. If there is any misuse
or abuse the lifetime warranty will be void.
-Precision Water Systems does not warrant any
transportation charges incurred to complete
the repair. The distiller owner is responsible
for all shipping charges to and from the
service center.
-Warranty is void if the distiller is found to
have been consumer damaged or misused,
caused by acts of God, unauthorized
alteration, repair or vandalism.

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Important Safety Precautions
When using electrical appliances, basic safety precautions should always be
followed including the following:
1. Read all instructions.
2. Do not touch hot surfaces. Use handles or knobs.
3. To protect against electrical shock do not immerse cords or plugs in
water or other liquid.
4. Close supervision is necessary when any appliance is used near
children.
5. Do not allow children to operate this appliance.
6. Unplug from outlet when not is use and before cleaning. Allow to cool
before putting on or taking off parts.
7. Do not operate any appliance with a damaged cord or plug or after the
appliance malfunctions or has been damaged in any manner. Return
appliance to the nearest service facility for examination, repair or
adjustment.
8. The use of accessory attachments not recommended by the appliance
manufacturer may cause injuries.
9. Do not use outdoors.
10.Do not let cord hang over edge of table counter, or touch hot surfaces.
11.Do not place on or near a hot gas or electric burner, or in a heated
oven.
12.Extreme caution must be used when moving an appliance containing
hot water.
13.Always attach plug to appliance first, then plug cord into the wall
outlet. To disconnect, turn any controls to “off”, then remove plug
from wall outlet.
14.This appliance is intended for household use.
15.Save these instructions.
Additional Safety Recommendations
1. Always unplug appliance before servicing.
2. Do not use extension cords with appliance.
3. Ensure there is adequate air space around the appliance to allow the heat
from the appliance to be removed and supply adequate fresh air for
cooling.

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Precision Water Distiller Owners’ Summary
The following is a summary of the information contained in this
Owners’ Guide and required to install and operate your Water
Distiller
1) Find a good location for installing your Water Distiller –
See Finding a Good Installation Location.
2) Unpack the water distiller and parts - See Unpacking
Your Water Distiller.
3) Assemble the Water Distiller –See
Storage Tank Assembly
Manual Drain Valve Tube Installation
Feed Water Line Connection
Boiling Tank Lid Installation
Water Distiller Wall Stabilizer
4) Install all purchased Options - See Optional
Accessories for installation instructions.
5) Steam sterilize boiling tank and storage tank –See
Steam Sterilization in the Maintenance and
Cleaning section.
6) Load Charcoal Filter Canister –See Replacing
Charcoal in Charcoal Filter Canister in the
Maintenance and Cleaning section.
7) Follow procedure in Normal Operation section.
8) Enjoy pure, distilled water!

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Water Distiller Front View
Water Distiller Rear View
Water Distiller Features
CONDENSING COIL SHIPPING STRAP
(REMOVE BEFORE USE) CONDENSING COIL (INSIDE)
GAS RELEASE VENT
(HIDDEN)
BOILING TANK LID KNOB
BOILING TANK (INSIDE)
BOILING TANK LID
OVERHEAT RESET SWITCH
WATER DISTILLER HEAD
STORAGE TANK
LEGS
ADJUSTABLE FEET
SIGHT GAUGE AND
DRAIN VALVE
STORAGE TANK
STORAGE TANK LID
CHARCOAL FILTER
CANISTER BODY
POWER SWITCH
FAN SWITCH
WATER SWITCH
OPTIONAL PUMP KIT
PANTRY FAUCET
REPLACEABLE
FUSE
ACCESSORY
PUMP
CONNECTION
ACCESSORY DRAIN
CONNECTION
IMPURITIES DRAIN
BALL VALVE
(OPEN POSITION)
DRAIN TUBE
FLOOR DRAIN

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1. Water Volume Measurement
a) How are you measuring your water? The most accurate is by weight.
1 litre of pure water = 1 kg = 1000 g = 2.2046 lbs
b) Water distillers are rated in US gallons, NOT Imperial Gallons.
1 US Gallon = 3.785 litres = 3.785 kg = 8.344 lbs = 0.833 Imp. Gallons
c) Most distilled water holding tanks do not completely drain from the tap.
Ensure this volume of water is included in your calculation by completely
draining the tank or starting your production check with this volume pre-
filled.
2. Line Voltage
The line voltage at the outlet where the distiller is connected should be checked
with a voltmeter. Line voltage is often much less than expected, especially in
rural areas. Line voltage will also usually drop off dramatically when the daily
commercial load hits the grid from approximately 8 am to 5 pm (often when the
distiller owner is not home and unable to check the line voltage). Line voltage
lower than the distiller rated voltage (on the serial plate) will drastically lower the
water production.
3. Fill Water Temperature
The water used to fill the machine may affect the water production. Cooler fill
water will take more time/energy to heat to the boiling point than hot water.
4. Ambient Air Temperature
Water distillers with cooling fans must have sufficient ventilation so that the boiled
steam can be cooled and condensed into distilled water. Restriction of air flow
(such as a closed cupboard) will result in a hot ambient air build up which will not
allow all of the steam to condense into distilled water and some water production
may escape as steam into the atmosphere through the charcoal filter or volatile
gas release vent. This steam loss can also occur in hot summer periods or very
warm climates.
10 Factors That Will Affect Your Water Distiller
Production

11
5. Heating Element and Boiler Cleanliness
As the water distiller removes impurities some of the impurities may cling to the
boiler tank and the heating element. Any of this scale may build up around the
heating element and actually insulate it, which will drastically decrease the
thermal efficiency of the heating element and require more time/energy to boil
water, which will decrease the water production.
6. Altitude
The water distiller is rated at the altitude of the manufacturer, which is
approximately 675 m (2214 ft) above sea level. Locations lower than this (closer
to sea level) will have reduced water production due to the higher boiling point of
water at higher atmospheric pressures at lower altitudes.
7. Operating Time, Warm-up Period & Suitable Storage
When checking the water distiller production, the start time should be when the
first few drops of water have entered the charcoal filter canister. Do not start
timing when the distiller turns on as it takes a few minutes for the heating
element, boiler tank and water to heat up. The distiller production rating does
NOT account for this time, but rather the continuous production after the distiller
is up to temperature. Ensure when checking production that you have suitable
water storage for holding the amount of water that will be produced.
8. Manual Fill Boiling Tank Fill Level
When checking the water distillation production on manual fill water distillers, the
amount of water initially poured into the boiling tank will affect the production.
Water should be filled to the water level pin so that once the water is hot the
maximum amount of water can be distilled without having to heat up and refill.
Under-filling the boiler will decrease the amount of water distilled. Again, the
warm-up time should not be included in the production rate.
9. Boiling Tank Heating Element
Once all other factors have been eliminated or checked, have an authorized
service center check that the proper heating element has been installed in your
distiller. Always replace heating elements with the manufacturers supplied
heating elements. Other elements are available from hardware stores, home
repair centers, etc. and look like the same element but they are almost always
not the same. Even if the voltage and wattage are the same, they usually have
different wattage densities and most likely different element sheath materials,
which will result in premature heater burnout in continuous water distillation of
raw water. These heating elements will also likely affect your water distillation
capacity.
10. Combination of the above Factors.
Often a reduced water distiller’s production is a combination of many or all of the
above factors. To ensure maximum production from your water distiller, keep
your water distiller clean and operate it in a well-ventilated area and use room
temperature feed water where possible.

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Your water distiller operates the same as Nature’s hydrological cycle. See
the Hydrological Cycle Diagram below. Nature uses the heat of the sun to
vaporize surface water and draw it into the atmosphere leaving the impurities
behind. As the vapour cools it condenses and returns back to the earth as rain or
snow. When rain or snow falls it passes through smog, dust and many other
types of contaminants. These contaminants can be picked up by the falling rain
or snow. Additional contamination of water can occur when it moves through the
ground.
Hydrological Cycle Diagram
Water Distillers complete their own hydrological cycle. The advantage of
a water distiller over Nature is that the water is produced in a closed environment
free of pollution and contaminants.
Your water distiller uses the boiling tank to heat the feed water to create
steam. The steam rises from the boiling tank leaving almost all of the impurities
behind. The steam enters the condensing coil and is cooled by the fan. As the
steam cools it condenses into pure distilled water and is stored in a stainless
steel storage tank. The charcoal filter between the condensing coil and storage
tank and the volatile gas vent remove any contaminants that boil at lower
temperatures than the boiling point of water. The impurities from the process
remain in the boiling tank and are drained to a suitable drain.
CONDENSATION
EVAPORATION
SMOG, DUST, ETC.
ROCK DEEP PERCOLATION
GROUND WATER
SURFACE WATER
HYDROLOGICAL CYCLE DIAGRAM
PRECIPITATION
Understanding How Pure Water is Produced

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Before installing your water distiller it is important to find a good location.
Following the points listed below will provide the best location for your water
distiller:
1. The water distiller must be plugged directly into a dedicated 120VAC, 15
Amp wall outlet.
2. The water distiller requires sufficient airflow around it to operate. The air
is used to cool the water distiller condensing coil. Locate the water
distiller in an area that will provide enough room for good air flow. Do not
place the water distiller in an enclosed area like a closet.
3. When using the Automatic Feed Water Line Connection to the water
distiller, locate the water distiller close to a household cold water line (after
a water softener if available).
4. Locate the water distiller where a pail or suitable container can be used
for the impurities drain. Close to a floor drain (sewer) is best especially if
the Automatic Drain Kit is installed.
5. When unpacking the water distiller and options note the sizes and
consider this when picking an installation location.
6. Locate the water distiller away from a bedroom or other area where the
noise of the water distiller may be undesirable.
7. Locate the water distiller close to the kitchen faucet area if the automatic
pump option is being used.
8. Locate the water distiller in an area that is clean and free of dust so the
cooling coils remain clean when the fan is drawing fresh air.
Finding a Good Installation Location

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Your Water distiller has been shipped in one box. Any optional
accessories have been shipped in a separate box(s). The Water Distiller Box
Components Diagram shown as follows displays all of the parts that will be in
the water distiller box.
Water Distiller Box Components Diagram
Water Distiller Box Check List
Check
List
(A) 1 –PWS 12-20 Water Distiller Head and Storage Tank
(B) 1 –Sight Gauge and Valve, HT, 23”
(C) 4’ – 1” x 1 ¼” Drain Tube
(D) 1 –Parts Box with UNPACKING INSTRUCTIONS
(Water Distiller Parts Box Components Diagram shown as follows)
(D) 1x(A) 1x
(B) 1x
(C) 1x
UNPACKING DISTILLER BOX DIAGRAM
Unpacking Your Water Distiller

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Water Distiller Parts Box Components Diagram
Water Distiller Parts Box Check List
Check
List Part No.
(A) 080115 1 –Sample Descaler/Cleaner
(B) 080116 1 –Sample Coconut Charcoal
(C) 500306 1 –Stainless Steel Canister
(D) 036005 1 –Valve Kit, Self Piercing
(E) 500184 1 –Boiling Tank Lid
(F) 054020 1 –1 ¼” Distiller Support Clip
(G) 010008 1 –No. 10 x 1” Screw
(H) 080121 1 –1 ¼” Gear Clamp
(I) 052002 2’ – Clear Sterilization Drip Tube
(J) 052000 16’–¼” Feed Line
(k) 097124 1 –PWS 12-20 Owners Guide
1. Remove all loose pieces from the water distiller box and save all
packaging until all the parts are identified and located.
2. Check inside boiler tank and storage tank for any parts that may be
shipped in that area. If any parts are missing or if you feel you have been
given the wrong part, DO NOT return the water distiller unit. Contact your
dealer for the required parts. They will be pleased to assist you.
3. Remove all protective plastic from water distiller head, storage tank,
boiling tank lid and storage tank lid.
(C) 1x (D) 1x(B) 1x(A) 1x
(F) 1x (G) 1x (H) 1x
(E) 1x
(J) 1x(I) 1x (K) 1x
PWS12-20
PWS WATER DISTILLER
OWNERS' GUIDE

16
Shipping Tie Removal Diagram
4. Refer to Shipping Tie Removal Diagram above. Cut/Remove the
shipping tie located on the top of the water distiller head. Be careful not to
scratch the water distiller when removing. This tie supports the cooling
coil during shipping only.
TOOLS REQUIRED FOR DISTILLER INSTALLATION
(A) (B) (C) (D)
10"
TOOLS REQUIRED:
For Water Distiller Installation
(A) #2 Phillips screwdriver
(B) Slotted screwdriver
Water Distiller Installation Tools
COIL SUPPORT TIE
SHIPPING TIE REMOVAL DIAGRAM
WATER DISTILLER HEAD

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1. Disconnect the Control Cable that is between the water distiller head and
the storage tank by loosening the locking ring and unplugging. See the
Control Cable Disconnect Diagram below.
Control Cable Disconnect Diagram
2. Remove the water distiller head from the storage tank by lifting the water
distiller head straight up from the storage tank. See the Water Distiller
Head Removal Diagram below
Water Distiller Head Removal Diagram
Storage Tank Assembly
WIRES
BOX
CONTROL
CABLE
CHARCOAL FILTER
CANISTER BODY
TUBE, SS, 3/8" X 1-1/2"
FILTER CAP
BULKHEAD, 3/8"JG
(INSIDE DISTILLER)

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3. Remove the sight gauge with valve from the parts box.
Sight Gauge Installation Diagram
4. Refer to Sight Gauge Installation Diagram above. Remove the plastic
hex jam nut from the threaded body of the valve (leaving washer gasket
on threads).
5. Remove the storage tank lid by holding down on the lid and turning the
black knob counter clockwise while lifting, approximately five turns. Slide
the lid to one side and turn the knob and lid together while tilting. This
should allow the Tee Bar bracket under the lid to come out of the tank
opening. Slide the lid out.
6. Push the gasket tightly up against the valve.
7. Insert the threaded valve end with gasket attached through the hole on
the front of the storage tank.
8. While holding the sight gauge with valve in the storage tank hole with one
hand, insert your other hand with the plastic hex jam nut through the
storage tank lid opening.
9. Place the hex nut onto the threaded end of the valve.
10.Hand tighten the hex nut clockwise onto the valve.
STORAGE TANK
#10-24 MACHINE SCREW
STAINLESS STEEL
3/8" JAM NUT
GASKET
THREADED FAUCET END
SIGHT GAUGE
VALVE HANDLE
DRAIN VALVE
SIGHT GAUGE INSTALL DIAGRAM
SIGHT GAUGE
SUPPORT

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Tightening Sight Gauge Nut Diagram
11.Refer to the Tightening Sight Gauge Nut Diagram above. To fully
tighten the nut, turn the valve counter-clockwise1/4 of a turn to the start
position and ensure that the jam nut is still hand tight. Holding the jam
nut, turn the valve clockwise until upright at the finish position.
12.Remove the #10-24 screw from the sight gauge support and install
through the inside of the storage tank using a Phillips screwdriver.
Tighten until snug only.
13.Make sure the storage tank is free from any dust or material and replace
the storage tank lid.
14.Check for leaks when storage tank begins filling.
NOTE: The sight glass is fragile, do not push on the gauge (push on
bottom near threaded area).
SIGHT GAUGE INSTALLATION DIAGRAM

20
G
1. Refer to the Manual Drain Valve Tube Installation Diagram shown
below. Push the drain tube onto the elbow and secure with gear clamp
using a slotted screwdriver. Run the drain tube to a container or suitable
floor drain like the sewer.
Manual Drain Valve Tube Installation Diagram
Manual Drain Valve Tube Installation
NOTE: If you have purchased the Automatic Electric Drain Kit, Go to the
PWS AED-1 Automatic Electric Drain Kit Installation section of the
guide and install it now.
TUBE TO SEWER GEAR CLAMP (SHIPPED IN PARTS BOX)
MANUAL DRAIN VALVE INSTALL DIAGRAM
BACK OF THE
DISTILLER
BALL VALVE ASSEMBLY