A.O. Smith ADR75-V-ET-1 User manual

MODEL
ADR75-V-ET-1

2

3

=OZNINORJRUIQL[TIZOUTZUVXK\KTZINORJXKTLXUS
4
1:1
Pure water : Waste water
Child Lock
Max.92đ
Min.9đ

9GLKZ_/TLUXSGZOUT
6XUJ[IZ/TZXUJ[IZOUT
6XUJ[IZ'VVKGXGTIK
:KINTOIGR6GXGSKZKXY
9ZX[IZ[XGR*XG]OTM
+RKIZXOIGR)OXI[OZ*OGMXGS
=GZKX,RU]*OGMXGS
6XUJ[IZ/TZXUJ[IZOUT
.U]ZU/TYZGRR
'JP[YZSKTZ6XUIKJ[XKY
5VKXGZOTM/TYZX[IZOUTY
6XK/TYZGRRGZOUT6XKVGXGZOUT
/TYZX[IZOUTLUX6XUVKX/TYZGRRGZOUT
3GOTZKTGTIK;VQKKV
,ORZKX2OLK
.U]ZU8KVRGIK,ORZKX
4UZKY




















5
:XU[HRKYNUUZOTM
6GIQGMK)UTZKTZY
=GXXGTZ_:KXSY)UTJOZOUTY

Don’t disassemble or
modify this water
purifier on your own.
Unplug the unit before repair,
inspection, or replacement.
Unauthorized disassembly
or modification of the
machine could lead to
machine malfunctions or
leaks.
Electrical shock may occur
if you do not unplug the
unit.
Don’t use a power source
exceeding the machine's specified
value, only use 220V AC power.
Keep the water purifier away from
high temperatures and humidity.
Overheating or fire may result
if the power source and
machine’s current are
incompatible.
Electrical shock, a short
circuit, fire or damage to the
machine's housing may
occur as a result.
Don’t make the machine wet. Don’t damage power cord or socket.
Leakage, fire, or electrical
shock may occur.
Electrical shock, a short
circuit, fire may occur as a
result. If power cord is
damaged, it must be
replaced by maintenance
staff or professional
technicians authorized by
our company.
Keep the water purifier away from
fire.
Don’t contact power plug with wet
hand.
Damage to the machine's
housing, even severe personal
injury or property loss may
occur as a result.
Electrical shock may
occur.
6
);:5,,

Do not operate the water purifier
when the sewer is blocked.
Do not block water proportioner.
Wastewater backflow and
pollution of the water
purifier may result.
Higher TDS of produced
water, RO membrane
blocking or no water
production may occur.
Don’t put things on top of the
machine.
Don’t contact with corrosive
material.
Damage to the machine or
fire may occur as a result of
hindering heat dissipation .
Corrosive material might
corrode inner
components. Or if some
toxic substances
penetrate into water
purifier pipeline,
pollution, water leakage,
even severe personal
injury and property loss
may result.
7
Don’t operate this water purifier
under high water pressure
conditions.
Operating under high water
pressure conditions may
cause the water purifier
pipes to rupture, resulting in
leaks, machine
malfunctions, or even
serious property damage.
Recommended inlet
pressure is 0.1MPa to
0.35MPa.

Before moving the unit, empty the
water inside. Do not tip the
machine beyond 45°.
Place the unit on a level surface
and keep the cooling fin in the
back at least 10cm from walls or
other objects.
This will prevent
backflow of refrigeration
fluid in the compressor
and water tank leaks
that could damage the
circuit.
This will facilitate the
release of heat.
8
Feed water should be municipal
tap water and cannot exceed 38đ.
Don’t place the unit in a place
where temperature is below 5đ.
If the inlet water exceeds
38℃, damage to the RO
membrane and membrane
failure may result.
When ambient temperature
is below 5℃, make sure
anti-freezing measures,
such as turning on the heat
or air conditioner, should be
adopted. Otherwise, water
freezes in the machine due
to low temperature. As a
result, pipe cracking, water
or electricity leakage might
occur.
Don’t put it in direct sunshine.
Please replace filters regularly. Disconnect water source and power
immediately and call our hot line .
Don’t store or operate the water
purifier outdoors.
Microorganism breeding,
water quality decrease,
pollution of internal
components may occur.
$Q\SDUWVRUSLSHVOHDN
$Q\SDUWVRIWKHV\VWHPPDOIXQFWLRQ
$Q\VWUDQJHSKHQRPHQDRUPDOIXQFWLRQVRFFXU
Accelerated aging of the
water purifier pipes and
parts may result,
leading to leakage or
machine failure.

1.Product Appearance
2.Technical Specifications
Model
Function
Voltage
Heating /Cooling/Gross power
Suitable water pressure
Feed water temperature
Max. feed water TDS
RO Membrane
Quality of produced water
Execution standard code
Health Permit Document No.
Purified water flow
Flush Method
Electric shock protection type
Electric shock protection type
L*W*H（mm）ADR75-V-ET-1
Heating Refrigerating Normal temperature
AC 220V 50Hz
500W/85W/630W
0.1MPa~0.35MPa
ađ
ŏ330
*3'
Accord with requirements of Sanitary Standard for Hygienic
Safety and Function Evaluation on Treatment Devices of
Drinking Water——reverse osmosis Treatment Device.
Q/3200 AONJ 007-2012
Wei Shui Zi (2010) No.0092
0.15L/min
Auto flush
Type I
Municipal tap water, accord with GB5749
380×420×1220
Note: the above-mentioned specifications may change due to product update, and the specifications shall be
subject to the nameplate.
The purified water flow is tested under environmental temperature of 25℃±2℃and water temperature 25℃±1℃.
9

Display panel
water release
button
USB panel
button panel
Water pump
Inlet water solenoid valve
Flush solenoid valve
Tank intlet solenoid valve
Cold path backwater solenoid valve
Hot water solenoid valve
Normal temperature solenoid valve
Cold water solenoid valve
Anti-dry temperature
controller
Overload
protector
Heating test
Fuse
Power plug L incoming line
Power adaptor
Switching power
supply
Refrigerating
test
Main control
panel
Power
panel
M
3.Structural Drawing
4.Electrical Circuit Diagram
10
LED screen
Hot water switch
Power switch
Hot tank
Cold tank
Hot tank drain
Overflow outlet
Feed water inlet
Cold water switch
USB operation panel
Compressor
Cold tank drain
Drain
Foot fixture
Display panel
Water outlet
Top panel
water collector cover
Water collector
Power adaptor
Water pump
Pre-filter
RO membrane
Post filter
Foot pad
Diagram 1
Diagram 2

5.Water Flow Diagram
6.Function Introduction
(1)Panel button function
Hot water button: Push this button to release hot water. Press it again, then stop producing water.
Note: Hot water button is only effective when child lock indicator is off.
Room temperature water button: Push this button to release room temperature water. Press it again, then stop
producing water.
cold water button: Push this button to release cold water. Press it again, then stop producing water.
Child lock button: Hold this button for 3 seconds to switch between locked and unlocked. The default status is
unlocked.
Note: Pressing hot water button/ room temperature button can get corresponding water (can only choose one
type). Push it again, then former operation is cancelled. if water is released for 1 min, system will implement
automatic water break protection.
11
Diagram 3
Diagram 4
Room temperature water button
Child lock button (indicator)
Cold water button
Hot water button
Waster water
Flow restrictor
High
pressure
pump
Post
activated
carbon
ȝP33ILOWHU
Tap water
Tee joint
Granular
activated carbon
Low pressure
switch
ȝP33ILOWHU
Inlet solenoid valve
Water tank
Hot water
Normal
water
Cold
water
Flush solenoid valve

(2) LED Screen Function
1) Power On: display in full screen for 5 seconds and twinkle for 3 times, then the unit enters into initialized
state.
2) Produce water: if water grid on flashes from top to below and indicator on icon
keeps on, it shows that product is purify water. Otherwise, systerm is not working.
3) Water level: three lines on represent different water levels of water tank. One line indicates low
water lever. Two lines represent medium water level while three lines mean the tank is full.
4) Lack water: All water grids on light off.
5) heating: -heating, - heating standby. icon turns off when heating system is
closed.
6) refrigerating: -refrigerating. -refrigerating standby. icon turns off when
refrigerating system is closed.
7) child lock icon: stays on when it is locked.( hot water button becomes invalid). Turns off when it is unlocked.
(hot water button becomes effective.)
8) water temperature: hot water temperature: red, real-time display of water temperature in the tank.
9) filter life: Use different colors to show the status of filter in
corresponding stage. Green: normal state. Red: filter needs to be replaced immediately. Orange：early
warning, filter needs to be replaced after some time (please call our hot line and prepare for machine
maintenance)
12
Heat Working Cold
Working
Working
Cold
Working
Cold

(3) USB panel Function
(4) Our primary water quality treatment components adopt the most advanced
RO technology in the world. Please find below their configurations.
"Select" button: can select 1st, 2nd, 3rd ,4th, 5th stage filter. Corresponding icon stays on.
"Reset" button: Hold it for over 3 seconds to activate it. Reset selected filter life and corresponding filter
indicator flashes in green. Do nothing for 10 seconds to exit this status.
Note: reset button can only be operated when replacing filter, otherwise, it is not
permitted.
13
2. Alarming function: After buzzer makes alarm, alarming code displays on and the whole screen
flashes. (please call our hot line and prepare for machine maintenance)
1) filter life alarm: The icon turns red when corresponding filter is reaching
the end of its life. And it turns orange to make early warning. Early warning: alarm buzzes 4 times when
entering into water production state. It will make the second warning after 24 hours. Alarming: alarm buzzes 8
times when entering into water production state and F1 shows on .
2) water leakage alarm: F2 shows on and alarm keeps buzzing.
3) overflow alarm:F3 shows on . Alarm buzzes 3 times with 2 seconds as a cycle.
4) super high temperature alarm: F5 appears on .Alarm buzzes 5 times with 2 seconds as a cycle.
5) Ultra low temperature alarm: F6 appears on . Alarm buzzes 6 times with 2 seconds as a cycle.
6) Lacking water alarm: F7 appears on . Alarm buzzes 7 times with 2 seconds as a cycle.
7) Hot water NTC failure: E1 appears on . Hot water NTC is short circuited, open circuited or the unit
doesn't stop working after heating for 45mins.
8) cold water NTC failure: E2 appears on . Cold water NTC is short circuited or open circuited.
9) High and low floater failure: E4 shows on ,high and low floater is abnormal.
machine maintenance)
The PP filter has a 5 micron pore size that
can effectively filter rust, sand, other solid
impurities, and larger particles in water.
The carbon filter can effectively adsorb free
chlorine, organic matter, disinfection byproducts,
smells,discoloration, and other substances in
water.
The 1-micron PP filter can further remove
particles of a smaller size, such as suspended
solids and colloids.
Effectively remove bacteria, viruses, heavy
metals, pesticide residues, and other harmful
substances from the water
1st stage ȝP33ILOWHU
2nd stage Granular activated carbon filter
ȝP33ILOWHU
Reverse osmosis
membrane
Post activated carbon
filter
Removes odor and adjusts taste.
3rd stage
4th stage
5th stage
Stage Product type and
material Function

The company recommends professionals install the machine for you because the product
needs to be installed and adjusted according to on-site situations of the user.
How to install inlet metal hose and tee joint
How to install water inlet pipe
Turn off tap water valve and unscrew end cap of water pipe. Take tee joint out off
accessory box and wrap its male thread with Teflon tape. Then screw the tee joint into water
pipe. At last, wrap the male thread of end cap with Teflon tape and screw it into the other end of
tee joint. (see diagram 6)
Take the 1/4'' water pipe out of accessory box and cut a suitable length of water pipe.
Connect one end of water pipe with the inlet of tee joint (refer to Diagram 6) and screw the metal
nut to right position; connect the other end of water pipe with the inlet interface on the back of the
machine. Please be noted that the water pipe shall be plugged in and match with the quick joint
properly to prevent tube burst and water leakage.
Monkey wrench
Electric drill
6.2mm drill
Philips and flathead screw driver
Scissors
14-16mm wrench
19-21mm wrench
Nipple pliers
1 piece
1 piece
1 piece (drain hole)
1 piece for each
1 piece
1 piece
1 piece
1 piece
1)
2)
14
(5) ON/OFF function: Turn off " power switch" to cut off power of the whole unit. Turn
off " hot water switch" to stop heating function. Users can choose ON/OFF according
to different needs.
(6) Foot pad function: There are four foot pads at the bottom of this machine to adjust
stability when ground is un-level.
user end of tap water
tee joint
end cap
metal nut
inlet pipe
Diagram 6

Take the water inlet pipe from the quick joint of membrane housing and unscrew the
membrane housing with its wrench. Then take RO membrane out of vacuum package and
install the end with four O rings into membrane housing tightly (see Diagram 8), in the end
install the housing cover and tighten it with cover wrench. Reconnect the water inlet pipe into
the quick joint of membrane housing and then lock the membrane housing clip into the large
single clip.
How to install RO membrane
Warning:
5)
Pay attention to RO membrane direction during installation;
Check whether one end of the membrane has 4 O rings or not when installing RO membrane.
If it is installed properly, RO membrane can be installed into membrane housing easily. if it is
difficult for membrane to install into it, don’t insert RO membrane into membrane housing
violently which might cause permanent damage to membrane housing and membrane element
(The manufacturer is not liable for any damage to membrane caused by improper installation);
Damage to membrane housing and RO membrane caused by above-mentioned reasons is not
included in the warranty scope.
15
Take out two suitable lengths of 1/4'' water pipe and connect them with the wastewater
RXWOHWDQGRYHUIORZRXWOHWDWWKHEDFNRIWKHPDFKLQH8VHDijPPGULOOWRSXQFKWZRVPDOOKROHV
into the sink drain pipe. Place the other ends of the wastewater pipe and overflow pipe just
inside the holes. Put some silica gel where the 6mm pipes and the drain pipe connect to prevent
leakage and use a cable tie to attach the wastewater pipe and overflow pipe to the drain pipe.
Notice: The highest point of overflow water pipe cannot be higher than overflow
outlet. Otherwise, water is not able to flow down.
Notice : Use a bigger container to hold water before installing the 3rd stage
super dense filter cotton. Install the 3rd stage filter until there is no black water
coming out.
How to install waste water pipe and overflow pipe3)
First, take out water collector and remove two screws. Press
plastic padlock and dismantle panel of the unit. Unscrew the
1st, 2nd and 3rd filter cartridges from air purifier interior, and
install corresponding dense filter cotton and pre-carbon filter.
When the 2nd activated carbon filter is used for the first time,
some activated carbon powder from the activated carbon
filter will flow into the 3rd stage dense cotton filter or even RO
membrane, resulting in filter and membrane component
damage. So before installing dense filter cotton, place a
bigger container in the installation place of the 3rd stage filter
cartridge, then turn on inlet valve and switch, power on and
flush pre-activated carbon. When there is no black water
coming out, turn off power switch and install dense filter
cotton into the 3rd stage filter cartridge. (see Diagram 7)
How to install filter4)
Diagram 7

How to install foot fixture
Remove screws at the bottom of machine back. Take foot fixture out of accessory bag
and fix it on the machine. Then screw on and Fix it on the floor with plastic expansion screw
(See Diagram 9)
Please confirm whether water pipe is connected properly and whether there is water/
power supply. Please confirm whether water pipe is connected properly and whether there is
water/ power supply. Then follow below adjustment procedures.
6)
To prevent some activated carbon from entering
into pure water tank when post activated carbon is
used for the first time, after finishing the installation
of filter and RO membrane, cut off a certain length
of 1/4'' water pipe and connect it into outlet end of
post activated carbon. Then turn on inlet valve and
inlet switch (Diagram 10) and switch the power on.
Flush RO membrane and post activated carbon for
15mins and connect it to former 1/4''pipe. Continue
to product water. When water production stops,
turn on hot water switch. Press room temperature
water button and hot water button to release
corresponding water.
1)
Adjustment Procedures
Diagram 8: Total have 4 O rings
Membrane housing
Water inlet Reverse osmosis membrane Membrane housing
cover
Water
inlet
Waster water
outlet
pure water
outlet
16
Foot fixture
Diagram 9
Diagram 10
Tee joint
Turn on Turn off

Check whether connection between joints are reliable and if there is any water/electric
leakage phenomenon on the joints of membrane housing and filters.
When the unit stops producing water, check whether water drainage stops.
Turn off hot water switch. Then check whether heating function stops.
Turn off power switch. Then check whether the whole unit powers off.
2)
3)
4)
5)
Please often observe the completion of whole unit to ensure safe use. When you will
not use the machine for an extended period of time, disconnect water and power source to
avoid microbial breeding. Remove screws and drain block plate with Philips screwdriver.
Unscrew nut of hot tank outlet and take down drain plug(refer to Diagram 11). Drain water
out of hot tank and restore drain plug, drain nut and block plate to the former position.
1)
When you use the machine again, turn on inlet valve and inlet switch. After make sure
that there is no water leakage, turn on power switch. When the unit stops producing water,
switch hot water on.
The ‘Operating’ in this ‘Operating Instructions’ means turning on power supply and/or
opening inlet valve to make the water purifier under working conditions.
2)
3)
This machine has the function of automatic filer replacement reminder. (Please see
page 12) The recommended filter life is based on the average indexes of tap water in
various districts. If users' actual water quality and using frequency have a great
discrepancy with average index, actual filter life differs greatly from estimated time, such
as early clogging or invalidity of filters. The customer should arrange for replacement with
their local service center based on the machine's actual usage conditions.
1)
1.Filter Life
Operating Instructions
Maintenance & Upkeep
17
Note: Prevent burns when draining hot water out.
drain plug screw
drain block plate
drain nut
drain
Diagram 11

2.How to Replace
The estimated filter life of this purifier is calculated based on household use. Please do
not use this purifier in a public place with much higher water consumption. In those
cases, we recommend that you choose our commercial model.
2)
Based on the assumption that the feed water is municipal water and daily water
consumption is 12.5L, the suggested filter life is as follows(below data is for reference
only):
Note: Since water quality exerts great influence upon filter life, and RO membrane life
is also affected by various factors, filter life might be higher or lower than above-mentioned
in reality, and thus above data is only for reference. The customer should consider
replacing filters under below circumstances:
◆ The taste of the pure water is bad and the TDS value has increased.
◆The pure water flow has decreased. Check whether the filters or membrane are
blocked (make sure it is not because of low inlet water temperature).
Please call our hot line for filter replacement. After-sales service staff will help you
replace filter to avoid misoperation. The manufacturer is not liable for any losses caused by
improper operation, or operation not following instruction.
1) Replacement of the 1st and 3rd stage filter cotton and the 2nd stage front activated carbon
Firstly turnoff water inlet valve and unscrew corresponding filter cartridge with filter cartridge
wrench. Take out old filter and place new filters into the filter cartridges (note: dense filter
cotton is installed in the 1st filter cartridge; front activated carbon is installed in the 2nd stage
filter cartridge and the end with silicone cushion shall be upward; super dense filter cotton is
installed in the 3rd stage filter cartridge). Then tighten cartridge cover with wrench.
Before front activated carbon filter is replaced, flush it firstly to prevent activated carbon
powder from entering into the 3rd stage filter or RO membrane, which will damage filter and
membrane elements. The detailed operation procedures are as follows:
(1) Turn off inlet switch of water purifier.
(2) Remove the 3rd stage cartridge with cartridge wrench;
(3) Collect water at the 3rd stage filter cartridge cover with a big container;
(4) Turn on inlet switch and wait until the outlet water from the 2nd filter is not black
anymore;
(5) Turn off inlet switch, place the filter into filter cartridge and then tighten the 3rd stage filter
cartridge cover.
◆The filter is covered by mud or its color has changed.
◆No pure water comes out of the water purifier.
3)
Stage Period
1st stage: ȝP33ILOWHU 12 months
2nd stage: Granular activated carbon filter 24 months
3rd stage: ȝP33ILOWHU 24 months
4th stage: Reverse osmosis membrane 36 months
5th stage: Post activated carbon filter 12 months
18

Note: when the machine is restarted after filter replacement, the machine will alarm shortly for
water shortage. However, this is completely normal because the machine hasn't been filled
with water yet. It will stop alarming and return to normal quickly.
2) Please refer to " How to Install RO Membrane" (page 16) for replacement of the 4th stage
RO Membrane.
3) Replacement of the 5th stage post activated carbon
Firstly, turn off inlet switch and take out the water pipes on the two sides of the post activated
carbon to be replaced. Get a new filter and install it according to original water inlet and outlet
direction. Turn on inlet switch and the unit starts producing water normally. Yet produced water
can’t be used until the new post activated carbon is flushed for 15 minutes.
3.Notes
1) Water output of RO membrane
Water output of RO membrane is subject to inlet pressure and inlet temperature. Nominal
75GPD of this machine is tested when the net pressure before RO membrane is 0.5MPa
and inlet water temperature is 25℃. If net pressure is less than 0.5MPa or water inlet
temperature is lower than 25℃, water output of RO membrane will be less than 75GPD.
The rated gross pure water output is 1000L (Tested according to requirements of Sanitary
Standard for Hygienic Safety and Function Evaluation on Treatment Devices of Drinking
Water——Reverse Osmosis Treatment Device.)
2) Treatment of old filter
The replaced old filter can’t be cleaned or recycled. So it is recommended that old filter
shall be abandoned as solid household garbage and treated by professionals.
3) When you will not use the machine for an extended period of time, disconnect the
water and power source of water purifier.
4) When any of the following situations occur, immediately disconnect the water source
(and/or the power source from the purifier and call our national hot line.
◆If the water purifier pipes or related components are leaking.
◆If the water purifier’s related components stop working.
◆If electricity leaks from any components.
◆if water leakage protector makes alarm. (See Diagram 12)
◆If there are any other anomalies or failures.
◆If related component of the water purifier is damaged, please contact with national
service hot line and our after-sale service staff will replace it for you to avoid damage. Our
company is not liable for any loss caused by operation not following this user manual.
19
Diagram 12
disconnect the water sou
al
g.
as
e
co
nt
ac
t
wi
th
n
at
io
na
l
al hot line.
g.
nt
t
wi
th
at
io
l
D
i
a
g
r
a
m
12

Trouble shooting
The machine
can’t be started.
Refrigerating
fails
The machine
keeps powering
ơ
repeatedly after
standby
Small or no pure
water output
The high pressure
pump works
normally but no
water is produced
Power supply is not connected
Refrigerating system is not powered on
No water or low-level water in pure
water tank
Refrigerant leakage
Machine vibrates. water level in the
tank is not stable. High and low level
ƪǤ
ƪ
Hot water temperature sensor failure
Cold water temperature sensor failure
ƪ
Replace hot water temperature sensor
Replace cold water temperature
Filter blocking
Inlet solenoid valve failure
Check valve blocking
Lack of pressure in high pressure
pump
High pressure pump failure
Inlet solenoid valve fail to open (no
pure water or wastewater)
ǦƤ
RO membrane blocking
Control box failure. Can not turn
ơƪǤ Check whether there is input voltage. Replace control box.
Replace RO membrane
Measure pump's outlet pressure. Replace pump.
Replace inlet solenoid valve
ƪǤ
ǦƤǤ
System stops but
waste water
doesn't stop
Heating fails
Inlet solenoid valve fails. Can not
ƪǤ
Decompression of check valve
ȋƪȌ
Heating system is not powered on.
Heating rod failure Replace hot tank
No water or low-level water in
pure water tank
Observe waste water. Replace inlet solenoid
valve
Observe waste water and replace check valve.
Power on and turn on hot tank rocker switch
Wait till water level in the water tank meets the
requirement.
RO membrane blocking
Ƥ
Replace inlet solenoid valve
Replace check valve
Measure pump's outlet pressure.
Replace high pressure pump.
Replace RO membrane
Operate the machine after placing it in
Compressor failure
Check power supply or power supply socket
low feed water pressure or no water
supply Check feed water pressure.
Measure resistance after feed water is
connected. Replace low pressure switch.
Measure resistance after decompression.
Replace high pressure switch.
Measure output voltage, replace power switch.
Measure output voltage, replace control unit.
Power on and turn on cold tank rocker switch
wait till water level in pure water tank
meets the requirement
Change compressor
Ƥ
of refrigeration system
Low pressure switch fails. Power
supply cannot be connected.
High pressure switch can’t reset
Power switch is burned out
No output voltage from control unit
20