Midea MRO1686B-50G User manual

WATER PURIFIER
Instruction Manual
Model: MRO1686B-50G
The diagram above is just for reference. Please take the
appearance of the actual product as the standard.
Before installing and operating your water purifier, please read the instruction
manual carefully and keep it for future reference.

1
pretreatment
device
1-1.Intruction
tap water
1. PRECAUTION
This section records the important content of security concerns to avoid the damage to the
consumers and even cause property loss. Please read the text based on fully understanding
of the marks and icon, and observe all the security concerns.
Sarning: the water purifier might be damaged seriously or causes the death of user when
the operation is incorrect, and it may cause electrical hazards or fire hazards.
If the fexible wire is damaged,
to avoid hazard, it must be
replaced by professional
fromafter-sale service of
manufacturer. To avoid fold
and power cord damage.
Replaced by professional
fromafter-sale service of
manufacturer.To avoid
fold and power cord damage.
Store the unit far away from
strong sunlight which is easy
to age the components. Avoid
to store or expose the unit
under 0°C environment.
The best working pressure
of the unit is 0.1-0.4Mpa,
please install the
supercharging device and
relief device when the
actual pressure is lower
or higher than the best
one.
Plug out the unit
immediately and
cut off the water
resource, contact
the local service
or call the National
service hotline.
When the inlet water quality
(dust and residual chlorine)
cant meet the tap water
standard, one pretreatment
device should be installed
before the unit.tap water
standard, one pretreatment
device should be installed
before the unit.
The unit shall be installed or
removed by professional. It ’s
easy to damage the inner
parts or cause electric shock
hazard if the unit is
disassembled by the
consumers themselves.
It’s easy to cause unit damage
if it’s removed with wrong.

2
Please turn off the power and
3-way ball valve if the unit will
be long- term unused. Dispense
water for 3 to 5 mins and then
reuse it.
The unit equipped with full-auto
water producing system, it starts
to producing water or flush
automatically When the unit is
not used for a long time. This
phenomenon is normal
There should be one 110-240V
power outlet for the unit within
the scope of 1.85m, And make
sure power outlet and adapter
locate in the interior to prevent
humid weather.
Please don’t turn off the
power or plug out the
power cord frequently.
It’s normal that there will be
slight noise and vibration
when the unit is producing
water.
The flow rate will be reduced
when the environmental
temp gets lower. This is the
inherent feature of RO
membrane.
The unit may catch
fire or be damaged,
and cause circuit
failure when it is
installed close to
strong magnetic
device.
The place with too much
dust and humidity may
cause circuit damage.
1.85m
Install the unit as
close as possible
to the floor drain

3
Security notice: the operator may get injured when the operation is wrong.
adapter
Plug out the unit and turn
off the 3-way ball valve
when there’s no water or
the pipes are in maintenance.
Open the other faucets and
drain the dust, and then 3-way
ball valve when the water
supply recovers, or the dust
may block the filter.
Please don’t let the children
operate, touch, climb and get
close to the unit. Children and
intellectual disabilities should
operate it with guardian.
Don’t pull power cord
directly to prevent
fracture.
Please make sure the plug
is clean and never plug in
and out the plug with wet
hand.
Store the unit far away
from flammable and
volatile substance.
Store the unit far away
from heat source and
open flames.
Clean the unit and
change the filter
regularly.
Don’t place heavy object
on the unit.
DonЎЇt use boosting
transformer to connect
the plug.

4
Water storage tank(1pc)
Faucet(1pc)Power adapter(1pc)
User manual(1pc)1/4" PE pipe(5m) Quick Fitting(1pc)
1.wash valve
2.inlet valve
3.electric appliance box
4.pump
5. cover plate of pump
6.power adapter
7.front panel
8.RO filter
9.PAC filter
10. post carbon filter
11.holder for filter
12.water flow system
13.back panel
14.electric appliance
box’s cover
15.hign pressure switch
1
2
3
4
5
6
7
9
10
11
8
12
1313
14
15
Warter Purifier(1set)
Packing box
Materials bag
1-2.Packing list
2-1.Part name of water purifier
2.YOUR DIRECT DRINKING WATER PURIFIER
Note: Please use the product in a place with temperature of 4-38°C and relative humidity
less than 90%.
* To enhance product performance, product parts may be changed without notice.
The object shall prevail.

5
2-2. Water processing graph
2-3. Electrical schematic
RO purified water outlet
Water tank outlet
RO concentrated water outlet
Tap water inlet
Booster pump
RO filterPAC compound filter Post Carbon filter
high-tension switch
Flushing valve
Water
inlet
valve
high-tension switch
Power adapter
Flushing
valve Inlet
valve
Booster
pump
2-4. How to use
Connect the water
resource and open
the water inlet valve,
connect to the tap
water.
Starting up: Plug in the unit. Water dispensing: Close the water
tank valve and open the faucet for
the first usage or after the postposition
carbon filter is replaced, there will be
a little bit black water which is normal.
Keep the unit running for 5-10mins
until the water is clear and without
odor. Open the water tank valve and
producing water normally.
Remark: the unit will flush automatically producing water every time

6
3.USE GUIDE AND MAINTENANCE
3-1. Trouble shooting
Issues Reason Trouble shooing
No flow or low flow
1. Filter blocks
2.The filter lifetime
is expired.
Producing water
exceeds 8 hs.
No halt
1. The control part
is damaged
2. No water in the
line.
• To ensure the water quality, The unit will be maintained by the professional
regularly and the filter material will be changed at the same time.
• Please don’t use soap, detergent, diluent, petrol and alcohol, it may cause crack,
scratches and color change.
• Please don’t clean the unit with splashing water on it directly.
3-2. Clean and maintenance
Plug out the unit and close the water
resource, please contact local distribution
and service office.
1. Plug out the unit and close the water
resource, please contact local distribution
and service office.
2.check the tap water.
water purifier
Remarks: The unit should always be standing( the top cover should always turn upwards),
the unit cant be placed horizontally or tilt to one direction
3-3. Fixing guide

7
Post Carbon filter
PAC compound filter
Model Function
Filter the dust, rust , suspended matter, residual chlorine and odor
effectively.
The theoretical filter precision can reach 0.0001-0.001 micron which
can filter the organicmatter (trichloromethane, carbon tetrachloride),
heavy metal (AS,lead and cadmium).
RO filter
Improve the water taste and absorb the abnormal color and odor in the
water.
Special tips:
1.The filter maintenance period is not the same as quality guarantee period, the original water
should meet the national standard and based on the normal domestic filter maintenance period.
2.The filter maintenance period is estimated which varies from places, water quality, usage
amount and seasons. The filter should be replaced regularly.
3-4. Filter introduce
Close the inlet
ball valve
Turn o ffthe power Close the tank
ball valve
1. When the filter lifetime is expired and the filter should be changed in time. Close the inlet ball
valve, turn o ffthe power and close the tank ball valve.
2.Take out the filter by the filter handle, inset the bottom part of filter into the groove and push
forward until it clicks the filter receptacle well.
3. When the filter replacement is finished. follow the “HOW TO USE”step to operate.
3-5. Filter change guide

7
MODEL
rate voltage
rate power
clean water flow rate
inlet pressuer
pressure before RO filter
MRO1686B-50G
110-240V~
30W
0.13L/min
30 - 60 PSI
60- 115 PSI
tap water
4.TECHNICAL PARAMETERS
4-1. Basic parameter
total clean water 2000L
0.1-0.4MPa
TDS≤350ppm
5-38°C
Inlet water pressure
applicable water temperature
require of the inlet water

The product is subject to change without notice.
Please keep this manual properly.
No.68 GuangLe Road, BEIJIAO, SHUNDE, FOSHAN,
GUANGDONG, R.P.CHINA
Foshan Midea Chungho Water purification
Equipment Co., Ltd