Atosa MWF9007 User manual

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INSTRUCTION MANUAL
for Solid Top Chest Freezer
MWF9007
MWF9010
MWF9013
MWF9016
Please read this user’s manual thoroughly before using.
Keep this manual handy for further reference.
NOTICE: This equipment is intended for the storage and display of packaged products only.

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Warranty Information
One YEAR WARRANTY
All claims for parts or labor must be made directly through Atosa. All claims must include: model number of the unit.
the serial number. proof of purchase, date of
installation. and all pertinent information supporting the alleged defect. In case of compressor replacement under
warranty. either compressor or compressor tag must be returned to Atosa along with above listed information. Failure
to comply with warranty policies will result in voiding claims.
One Year Parts & Labor Warranty
Atosa warrants all new refrigerated components. such as the cabinet and all parts, to be free from defects in materials
or workmanship. Atosa's obligation under this
warranty is limited to a period of one (1) years from the date of original installation or 15 months after shipment date
from Atosa. whichever occurs first. All parts covered under this warranty that are defective within one(1) years of
original installation or fifteen (15) months after shipment date from manufacturer, whichever occurs first, are
limited to repair or replacement (including labor charges, of defective parts or assemblies) The labor warranty shall
include standard straight time labor charges only and reasonable travel time, as determined by Atosa.
Additional Four Year Compressor Warranty
In addition to the one(1) Year warranty stated above. Atosa warrants its sealed compressor to be free from defects in
both material and workmanship under normal and proper use and maintenance service for a period of four (4)
additional years from the date of original installation,but not to exceed five (5) years. Compressors that have been
determined to be defective from Atosa within this extended period will be either repaired or replaced with a
compressor or compressor parts of similar design and capacity according to Atosa's discretion . The four (4) year
extended compressor warranty applies only to sealed parts of the compressor and does not apply to any other parts
or components. This includes. the cabinet, paint finish, temperature control, refrigerant, metering device, motor
starting equipment, fan assembly and other electrical components, etc.
404A / 134a Compressor Warranty
The five-year compressor warranty detailed above will be void if the following procedure is not carefully adhered to:
1 .This system contains R404A or R134a refrigerant and lubricant. The lubricant has rapid moisture absorbing qualities.
2.Drier replacement is very important and must be changed when a system is opened for servicing.
3.Micron level vacuums must be achieved to insure low moisture levels in the System.
4.Compressor must be obtained through Atosa unless otherwise specified in writing through Atosa's warranty
department.
What is Not Covered by This Warranty
Atosa's sole obligation under this warranty is limited to either repair or replacement of parts, subject to the additional
limitations below This warranty neither assumes nor authorizes any person to assume obligations other than those
expressly covered by this warranty.
NO CONSEQUENTIAL DAMAGES: ATOSA IS NOT RESPONSIBLE FOR ECONOMIC LOSS; PROFIT LOSS; OR SPECIAL. IN
DIRECT, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOSSES. OR DAMAGES ARISING FROM
FOOD OR PRODUCT SPOILAGE,REGARDLESS OF WHETHER OR NOT THEY RESULT FROM REFRIGERATION FAILURE.
WARRANTY IS NOT TRANSFERABLE: This warranty is not assignable and applies only in favor of the original purchase
/user to whom delivered. ANY SUCH ASSIGNMENT OR TRANSFER SHALL VOID THE WARRANNTIES HEREIN
AND SHALL VOID ALL WARRANTIES. EXPRESS OR IMPLIED. INCLUDING ANY WARRANTY OF MERCHANTABILITY OR

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LABOR COVER AGE FOR COMPONENT FAILURE OR OTHER THE WARRANTY PACKET PROVIDED
WITH THE UNIT.
ALTERATION. NEGLECT. ABUSE. MISUSE, ACCIDENT, DAMAGE DURING TRANSIT OR INSTALLATION, FIRE, FOOD, OR
ACTS OF GOD:
Atosa is not responsible for the repair or replacement of any parts that are determined to have been subjected after
the date of manufacture to alteration, neglect, abuse, misuse, accident, damage during transit or installation, fire,
flood, or act of God.
IMPROPER ELECTRICAL CONNECTIONS: Atosa IS NOT RESPONSIBLE FOR THE REPAIR OR REPLACEMENT OF FAILED OR
DAMAGED COMPONENTS RESULTING FROM ELECTRICAL POWER FAILURE, THE USE OF EXTENSION CORDS, LOW
VOLTAGE, OR VOLTAGE DROPS TO THE UNIT.
THE ONE(1) YEAR PARTS & LABOR WARRANTY AND THE ADDITIONAI FOUR (4) YEAR COMPRESSOR WARRANTY ARE AS
DESCRIBED ABOVE. THESE WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, INCLUDING
IMPLIED WARRANTY AND MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. THERE ARE NO WARRANTIES
WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE HEREOF.
Outside U.S. and Canada: This warranty does nor apply to areas ourside the continent of the United States. Atosa is
not responsible for any warranty claims made on products sold or used in such areas.
*In some cases. a 25 % restocking fee may be charged to a buyer for returned items.*
Atosa may at any time modify our equipment in order to provide and insure a superior product. Change
is sometimes necessary to keep up with today’s high standards in our industry. Atosa reserves the final
interpretation of all public material.
Important Child Safety
Destroy or recycle the carton, plastic bags, and any exterior wrapping material
immediately after the unit is unpacked. Children should never use these items
to play.

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Product Information
--Preface
This instruction manual provides all the necessary information regarding:
 Use of the freezer
 Technical specifications
 Installation and handling
 Operator procedures and instructions
 Maintenance operation
The manual is to be considered an integral part of the freezer and should be stored in a safe place
for future references to insure a long life of the freezer.
ATTENTION
The manufacturer cannot be held liable in the following cases:
 Improper installation(not in accordance with the guidelines indicated herein)
 Misuse of the freezer
 Power supply defects
 Improper or inadequate maintenance
 Unauthorized modification or tampering
 Use of non-original spare parts
 Partial or total failure to comply with the instructions
All electrical equipment can be hazardous to health. Current standards and legal requirements
must be complied with during the installation and use of any equipment.
--Use of this equipment
The freezers are for preserving packaged foods (foods that are bottled, canned, cartoned, securely
bagged, or securely wrapped in a container).
The operating temperature for frozen food maintenance is:
■ Between -8°F and -1°F at room temperature of 109°F and 60% RD.
--Technical Specification
Model MWF9007 MWF9010 MWF9016
Rated Electric 115v, 60Hz, 1.3A 115v, 60Hz, 1.35.0A 115v, 60Hz, 1.75A
Refrigrant(Ounces) R600a / 2.29 R134a / 6.70 R134a / 7.76
Design
Pressure(High/Low)
105 psig / 54 psig 305 psig / 105 psig 305 psig / 105 psig
Net weight(KG) 38 48 72

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Installation Instruction
--Unpacking and Handling
The freezer is in the package of cardboard box with foam boards protect when it arrives at user’s place.
The freezer must be transported and handled with care to avoid posing a hazard to persons or property.
Never place a freezer on its side or turn it upside down as this may damage or impair operation of the
refrigerated unit.
We can not held liable for any damage or defects arising directly or indirectly from improper handling
of the equipment or non-compliance with the safeguards illustrated above.
-- Side clearance for the freezer
Install the freezer in an indoor and well-ventilated area with even flat ground.
Keep side clearance for the freezer, leave a 3 inch
(75mm) clearance at each side of the freezer for
adequate air circulation.
--Electric connection
WARING Electric connection must be carried out by professional and qualified persons
The mains voltage corresponds to the voltage on the freezer 115V/60Hz/1Ph; to ensure proper
operation it is essential for the power supply voltage to come within a range of +/-10% of the unit’s
rated voltage.
The freezer should be plugged into a grounded and properly-sized electrical outlet with appropriate
overcurrent protection. Please refer to the electrical requirements on the nameplate.
Make sure that your unit has its own dedicated outlet. Do not use an extension cord.
Do not cut, remove or bypass the grounding prong

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--Door handle Installation
Model MWF9010, MWF9013 and MWF9016 have extension door handle, it need to be installed at field
when the freezer is located in the user place, the door handle parts are packed in a bag inside cabinet
when freezer arrive at user location.
The procedure of handle installation is:
 Install the handle frame at the front edge of door according to existing screw hole located at door;
 Install door lock latch on the cabinet according to screw holes located at front of cabinet;
 Install the handle cover on the handle frame.
Operation Instruction
--Setting temperature control
For safe food storage, let the freezer run for 4 hours continuously, before placing food into the cabinet.
The temperature setting of the freezer can be adjusted by moving the thermostat axis position. It can be
changed with screw driver or a coin shaped tool. The recommended setting for the freezer is at position
“4”. Turn axis to its original position when the articles are frozen. Do not fast freeze for more than 4-5
hours. To decrease the temperature (colder), turn towards position close “1”. To increase the temperature
(warmer), turn towards position close “7”.
CAUTION
Setting the temperature control to the coldest setting may cause the evaporator coil to freeze and ice up.
This will eventually result in a warmer cabinet temperature.

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Maintenance Instruction
--Care and Cleaning
The freezer should be cleaned periodically; generally clean it every 30-45 days. Unplug before cleaning
and use a soft cloth with a solution of warm water and mild soap to scrub inside and outside of the
cabinet.
Do not use acids, chemical thinner, gasoline or benzene for cleaning any part of the chest freezer. Dr y
it with a soft cloth. Never use water to rinse the freezer.
--Defrost
If the frost on the interior walls is more than 1/4”, defrosting should be done.
Method of defrosting:
1) Unplug the unit. Remove all contents of the freezer. After the freezer temperature rises, frost will melt
or scale off.
2) To speed up defrosting, place a pan of hot water into the unit and close the door. After defrosting,
drain the water through the drain hole at bottom of cabinet, and then use a soft cloth to dry the interior
walls. Plug unit in and resume operation. Wait until unit reaches desired temperature before returning
product to the freezer.
Remember replace the drain plugs when defrosting and cleaning are completed. If the drain is left open,
warm air may enter the freezer.
Note: Never use sharp utensils or ice scrapers to scrape off frost.

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Technical Service Information
--Explore view
--Service part list
No in explode view Description Service Part No
1
Door for MWF9007 MWFP901
Door for MWF9010 MWFP902
Door for MWF9013 MWFP903
Door for MWF9016 MWFP904
2
Door Gasket for MWF9007 MWFP905
Door Gasket for MWF9010 MWFP906
Door Gasket for MWF9013 MWFP907
Door Gasket for MWF9016 MWFP908
3 Control Panel MWFP909

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Continue part list
No in explode view Description Service Part No
4
Compressor for MWF9007 MWFP910
Compressor for MWF9010
&9013 MWFP911
Compressor for MWF9016 MWFP912
5 Thermostat MWFP913
6 Filter MWFP914
7
Compressor apartment
Cover(9007) MWFP915
Compressor apartment
Cover(9010above) MWFP916
8 Outter Drain plug MWFP917
9 Inner Drain plug MWFP918
10
Basket for MWF9007 MWFP919
Basket for MWF90010-9016
MWFP920
11 Hinge Cover MWFP921
12 Door Hinge MWFP922
Not showed in explode view Door Handle MWFP923
Not showed in explode view
Caster MWFP924
Not showed in explode view
Caster with brake
MWFP925

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--Electric Connection Diagram
MWF9007 Diagram
MWF9010/9013/9016 Daigram

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--TroubleShooting
Problem or Concern Possible Cause Common Solution
The indicator is not on.
The compressor doses not
start.
The plug isn’t connected to the
socket really.
Replug it.
no power Connect the socket with power.
The indicator is on ,but the
compressor doesn’t work and
buzzes only
The power voltage is＜98V.
Connect a voltage-regulator
(with more than 1000w
capacity).
The compressor stops a minute
after start, and restart after a
few minutes, and so repeatedly.
The power voltage is＞132V.
The compressor works
normally, but the temperature
in the cabinet goes down too
slowly.
The door is opened too
frequently.
Reduce open times.
The food in the cabinet is too
much, and placed improperly.
Place foods properly keep place
between them for ventilation of
cold air.
The frost layer is too thick. Take out foods and defrost.
The surface of the condenser is
too dirty.
Stop and clean the condenser.
The door seals badly. Adjust the door seal.
The noise is too loud
The freezer is placed unstably. Place it stably.
The fixing of the freezer is
loose.
Tighten the fixing.
there’s contact between pipes. Separate them.
The following are not faults:
 When the freezer is working or after is stops for a while, the refrigerant in the pipes is cycling and gives out
running water＂sounds.
 The surface temperature of the compressor may be up 150°F when it is working.
 The back side of step freezer gives out heat.
 In rainy season, the outer surface of the cabinet may have dew, which makes no defects on normal use. Just
dry it with a piece of cloth.