U-LINE UOFZ124-S01B Compact Refrigerators User Manual
- June 16, 2024
- U-Line
Table of Contents
U-LINE UOFZ124-S01B Compact Refrigerators User Manual
WELCOME TO U-LINE
Congratulations on your U-Line purchase! Your product comes from a company
with decades of premium modular ice making, refrigeration, and wine
preservation experience. U-Line creates products focused on functionality,
style, and inspired innovations — paying close attention to even the smallest
details. Applications include residential, outdoor, ADA height compliant,
marine, and commercial. Product categories include Beverage Centers, Wine
Refrigerators, Ice Machines, Refrigerators, Freezers, and Dispensers. Our
advanced refrigeration systems, large and flexible capacities, and clean
integrated look are what makes our products Built-In to Stand Out®. Since
2014, U-Line has been part of the Middleby family of brands. Products are
designed, engineered, and assembled in Milwaukee, Wisconsin, USA, and select
products are available worldwide.
U-Line — RIGHT PRODUCT. RIGHT PLACE. RIGHT TEMPERATURE.®
PRODUCT INFORMATION
Looking for additional information on your product? User Guides, Spec Sheets,
CAD Drawings, and Product Warranty information are available digitally on
u-line.com.
PROPERTY DAMAGE / INJURY CONCERNS
In the unlikely event property damage or personal injury is suspected related
to a U-Line product, please take the following steps:
1. U-Line Customer Care must be contacted immediately at +1.414.354.0300.
2. Service or repairs performed on the unit without prior written approval
from U-Line is not permitted. If the unit has been altered or repaired in the
field without prior written approval from U-Line, claims will not be eligible.
GENERAL INQUIRIES
U-Line Corporation
8900 N. 55th Street
Milwaukee, Wisconsin 53223 USA
Monday – Friday 8:00 am to 4:30 pm CST
T: +1.414.354.0300
Email: sales@u-line.com
u-line.com
SERVICE & PARTS ASSISTANCE
Monday – Friday 8:00 am to 4:30 pm CST
T: +1.414.354.0300
Service Email: onlineservice@u-line.com
Parts Email: onlineparts@u-line.com
Designed, engineered and assembled in WI, USA
Safety
Safety and Warning
NOTICE
Please read all instructions before installing, operating, or servicing the
appliance.
Use this appliance for its intended purpose only and follow these general
precautions with those listed throughout this guide:
SAFETY ALERT DEFINITIONS
Throughout this guide are safety items labeled with a Danger, Warning, or
Caution based on the risk type:
Danger means that failure to follow this safety statement will result in severe personal injury or death.
Warning means that failure to follow this safety statement could result in serious personal injury or death.
Caution means that failure to follow this safety statement may result in minor or moderate personal injury, property, or equipment damage.
This unit contains R600a (Isobutane) which is a flammable hydrocarbon. It is safe for regular use. Do not use sharp objects to expedite defrosting. Do not service without consulting the “R600a specifications” section included in the User Guide. Do not damage the refrigerant circuit.
Service must be done by factory authorized service personnel. Any parts shall be replaced with like components. Failure to comply could increase the risk of possible ignition due to incorrect parts or improper service.
CALIFORNIA PROPOSITION 65
This product contains chemicals known to the state of California to cause
cancer and birth defects or other reproductive harm.
www.P65warnings.CA.gov
This equipment is to be installed with adequate backflow protection to comply with applicable federal, state and local codes.
Disposal and Recycling
RISK OF CHILD ENTRAPMENT. Before you throw away your old refrigerator or freezer, take off the doors and leave shelves in place so children may not easily climb inside.
If the unit is being removed from service for disposal, check and obey all federal, state, and local regulations regarding the disposal and recycling of refrigeration appliances, and follow these steps completely:
- Remove all consumable contents from the unit.
- Unplug the electrical cord from its socket.
- Remove the door(s)/drawer(s).
Installation
Environmental Requirements
This unit is designed to operate between 50°F (10°C) and 100°F (38°C). Higher
ambient temperatures may reduce the unit’s ability to reach low temperatures
and/or reduce ice production on applicable models.
For best performance, keep the unit out of direct sunlight and away from heat generating equipment.
In climates where high humidity and dew points are present, condensation may appear on outside surfaces.
This is considered normal. The condensation will evaporate when the humidity drops.
Damages caused by ambient temperatures of 40°F (4°C) or below are not covered by the warranty.
Electrical
SHOCK HAZARD — Electrical Grounding Required. Never attempt to repair or perform maintenance on the unit until the electricity has been disconnected.
Never remove the round grounding prong from the plug and never use a two-prong grounding adapter.
Altering, cutting or removing power cord, removing power plug, or direct wiring can cause serious injury, fire, loss of property and/or life, and will void the warranty.
Never use an extension cord to connect power to the unit.
Always keep your working area dry.
NOTICE
Electrical installation must observe all state and local codes. This unit
requires connection to a grounded (three-prong), polarized receptacle that has
been placed by a qualified electrician.
The unit requires a grounded and polarized 115 VAC, 60 Hz, 15A power supply (normal household current). An individual, properly grounded branch circuit or circuit breaker is recommended. A GFCI (ground fault circuit interrupter) is usually not required for fixed location appliances and is not recommended for your unit because it could be prone to nuisance tripping. However, be sure to consult your local codes.
See CUTOUT & PRODUCT DIMENSIONS for recommended receptacle location.
Cutout & Product Dimensions
PREPARE SITE
Your U-Line product has been designed for either freestanding or built-in installation. When built-in, your unit does not require additional air space for top, sides, or rear. However, the front grille must NOT be obstructed, and clearance is required for an electrical connection in the rear.
Unit can NOT be installed behind a closed cabinet door.
CUTOUT DIMENSIONS
PRODUCT DIMENSIONS
Side-by-Side Installation
Two units may be installed side-by-side.
Cutout width for a side-by-side installation is the cutout dimension of a
single unit times two.
No trim kit is required. However, 1/4″ (6 mm) of space needs to be maintained between the units to ensure unobstructed door swing.
Units must operate from separate, properly grounded electrical receptacles placed according to each unit’s electrical specifications requirements.
Side-by-Side Installation with Bracket
1. Slide both units out so screws on top of units are easily accessible.
2. Remove screws as shown below.
3. Place bracket over holes and attach to unit with two screws removed in
step 2 using a T-25 Torx driver. Tighten screws fully.
4. Gently push units into position. Be careful not to entangle the electrical
cord or water line, if applicable.
5. Re-check the leveling, from front to back and side to side. Make any
necessary adjustments. The unit’s top surface should be approximately 1/8″ (3
mm) below the countertop.
Anti-Tip Bracket
1. Slide unit out so screws on top of unit are easily accessible.
2. Remove the two screws from the opposite side of the hinge assembly using a
T-25 Torx driver (see below).
3. Place bracket over holes and attach to unit with two screws removed in
step 2 using a T-25 Torx driver. Tighten screws fully.
4. Gently push unit into position. Be careful not to entangle the electrical
cord or water line, if applicable.
5. Check to be sure the unit is level from front to back and side to side.
Make any necessary adjustments.
The unit’s top surface should be approximately 1⁄8” (3 mm) below the
countertop.
6. Secure bracket into adjoining surface.
General Installation
LEVELING INFORMATION
INSTALLATION TIP
If the room floor is higher than the floor in the cutout opening, adjust the
rear legs to achieve a total unit rear height of 1⁄8” (3 mm) less than
opening’s rear height.
Shorten the unit height in the front by adjusting the front legs. This allows the unit to be gently tipped into the opening. Readjust the front legs to level the unit after it is correctly positioned in the opening.
INSTALLATION
- Plug in the power/electrical cord.
- Gently push the unit into position. Be careful not to entangle the cord or water and drain lines, if applicable.
- Re-check the leveling, from front to back and side to side. Make any necessary adjustments. The unit’s top surface should be approximately 1/8” (3 mm) below the countertop.
- Install the anti-tip bracket.
- Remove interior packing material and wipe out the inside of the unit with a clean, water-dampened cloth.
Grille Installation
REMOVING AND INSTALLING GRILLE
Disconnect electric power to the unit before removing the grille.
When using the unit, the grille must be installed.
Removing the grille
1. Disconnect power to the unit.
2. Loosen the two screws (1).
3. Remove grille (2) from unit.
Installing the grille
1. Align cabinet and grille holes and secure, but do not over tighten grille
screws (1).
2. Reconnect power to the unit.
Door Swing
Units have a zero clearance for the door to open 90°, when installed adjacent to cabinets.
Stainless Steel models require 2-1/8″ (54 mm) door clearance to accommodate the handle if installed next to a wall.
Door Adjustments
HINGE COVER (if equipped)
Hinge cover included with the literature bag is optional.
To install hinge cover:
1. Press hinge cover squarely over hinge.
DOOR ALIGNMENT AND ADJUSTMENT
Align and adjust the door if it is not level or is not sealing properly. If the door is not sealed, the unit may not cool properly, or excessive frost may form in the interior.
NOTICE
Properly aligned, the door’s gasket should be firmly in contact with the
cabinet all the way around the door (no gaps). Carefully examine the door’s
gasket to ensure that it is firmly in contact with the cabinet. Also make sure
the door gasket is not pinched on the hinge side of the door.
To align and adjust the door:
1. Gently pry off hinge cover (if equipped) from top of unit.
2. Loosen (do not remove) top and bottom hinge screws using a Torx T-25
screwdriver.
3. Align door squarely with cabinet.
4. Make sure gasket is firmly in contact with cabinet all the way around the
door (no gaps).
5. Tighten bottom hinge screws.
6. Tighten top hinge screws and replace hinge cover.
REVERSING THE DOOR
Location of the unit may make it desirable to mount the door on the opposite
side of the cabinet.
The hinge hardware will be removed and reinstalled on the opposite side of the
cabinet.
Remove grille:
Remove the grille (see GRILLE INSTALLATION section of this guide).
Remove arrow clips or screws:
1. With a puddy knife or other flat tool, gently pry each arrow clip from
hinge mounting holes.
2. Set aside arrow clips to be reused on the opposite side.
Remove top hinge and door:
1. Hold door to keep it from falling.
2. Remove top hinge from cabinet using a Torx T-25 screwdriver to remove
three screws. Set aside and save for future use.
3. Remove door by tilting forward and lifting door off bottom hinge. Retain
shoulder washers; they will be reused.
4. Insert arrow clips or screws into holes.
Remove bottom hinge:
1. Remove bottom hinge from cabinet using a T-25 TORX screw driver to remove
three screws.
2. Remove corresponding screws on opposite side of cabinet. On some models there may be a nut behind one or both screws on either side.
Install bottom hinge:
Install two or three screws, depending on model. Replace nuts if used.
Install top hinge and door:
1. Install hinge with longer straight edge aligned to outside edge of
cabinet. Do not tighten.
2. Rotate door 180o and set on bottom hinge.
3. Align edge of the hinge with the outer edge of the unit.
4. Tighten three hinge screws using a Torx T-25 screwdriver.
Align and adjust the door:
Align and adjust the door (see DOOR ALIGNMENT AND ADJUSTMENT)
Install grille and hinge cover (if equipped)
Maintenance
Free Standing Kit
To free standing kit is an optional accessory (ULAFREESTANDS), used when unit is freestanding – not built into a cabinet. Available at u-line.com.
To install the kit:
1. Remove grille (see GRILLE INSTALLATION section).
2. Place shell accessory over front and back of cabinet base, aligning holes of shell accessory with the holes on the base. Insert sheet metal screw in back of base.
3. Align front hole wit hole in shell accessory, hole in base, and hole in grille. Tighten screw.
Operating Instructions
First Use
Initial startup requires no adjustments. If the unit was turned off, press and the unit will immediately switch on. To turn off, press and release. See CONTROL OPERATION section for more details.
NOTICE
Temperature displayed reflects actual temperature inside unit.
If the temperature displayed is different than selected, the unit is progressing towards the selected temperature. Time to reach set point varies based upon ambient temperature, temperature of product loaded, door openings, etc. U-Line recommends allowing the unit to reach set point before loading.
Approximate time required (empty unit) when converting between refrigerator and freezer:
• 38ºF to 0ºF – 1 hour
• 0ºF to 38ºF – 4 hours
Control Operation
CONTROL FUNCTION GUIDE
This unit is Star-K certified. See www.star-k.org for more details.
DOOR ALERT NOTIFICATION
When the door is left open for more than 5 minutes:
Close door to silence alert and reset
Airflow and Product Loading
NOTICE
The unit requires proper airflow to perform at its highest efficiency. Do not
block the front grille, internal fans or vents at any time, or the unit will
not perform as expected. Do not install the unit behind a door.
Interior Adjustments
FREEZER BASKETS
Freezer Basket Installation & Removal
Freezer baskets are removable for cleaning. To remove the baskets follow the
instructions below.
1. Fully extend the basket you wish to remove from the cabinet.
2. Press the left basket release lever down. At the same time, lift the matching right basket release lever up. Pull basket out until it is free of the tracks and the cabinet.
NOTICE
Do not remove the track rails from the cabinet.
To reinstall:
- Align the left and right basket channels with the tracks in the cabinet. Ensure an even track engagement on both sides by gently pushing the basket into the cabinet until it stops.
- Before reloading the basket, ensure proper movement of the travel stops in the left and right track rails by pulling the basket out gently until it stops.
- Push the basket into the cabinet.
Cleaning
Baskets may be cleaned in a soapy warm water solution.
A general household disinfectant may be used if necessary. Be sure to
completely dry your basket before reinstalling. Do not submerge basket
assembly.
NOTICE
Freezer baskets are NOT dishwasher safe.
Cleaning
Stainless Models
Stainless door panels and handles can discolor when exposed to chlorine gas,
pool chemicals, saltwater or cleaners with bleach.
Keep your stainless unit looking new by cleaning with a good quality all-in-
one stainless steel cleaner and polish monthly. For best results use Claire®
Stainless Steel Polish and Cleaner. Comparable products are acceptable.
Frequent cleaning will remove surface contamination that could lead to rust.
Some installations may require cleaning weekly.
Do not clean with steel wool pads.
Do not use stainless steel cleaners or polishes on any glass surfaces.
Clean any glass surfaces with a non-chlorine glass cleaner.
Do not use cleaners not specifically intended for stainless steel on stainless
steel surfaces (this includes glass, tile and counter cleaners).
If any surface discoloring or rusting appears, clean it quickly with Bon-Ami®
or Barkeepers Friend Cleanser® and a nonabrasive cloth. Always clean with the
grain.
Always finish with Claire® Stainless Steel Polish and Cleaner or comparable
product to prevent further problems.
Using abrasive pads such as Scotchbrite™ will cause the graining in the stainless steel to become blurred.
Rust not cleaned up promptly can penetrate the surface of the stainless steel and complete removal of the rust may not be possible.
Integrated Models
To clean integrated panels, use household cleaner per the cabinet manufacturer’s recommendation.
INTERIOR CLEANING
Disconnect power to the unit.
Clean the interior and all removed components using a mild nonabrasive
detergent and warm water solution applied with a soft sponge or non-abrasive
cloth.
Rinse the interior using a soft sponge and clean water.
Do not use any solvent-based or abrasive cleaners. These types of cleaners may transfer taste to the interior products and damage or discolor the lining.
DEFROSTING
Under normal conditions this unit does not require manual defrosting. Minor
frost on the rear wall or visible through the evaporator plate vents is normal
and will melt during each off cycle.
If there is excessive build-up of 1/4″ (6 mm) or more, manually defrost the
unit.
Ensure the door is closing and sealing properly.
High ambient temperature and excessive humidity can also produce frost.
DO NOT use an ice pick or other sharp instrument to help speed up defrosting. These instruments can puncture the inner lining or damage the cooling unit. DO NOT use any type of heater to defrost. Using a heater to speed up defrosting can cause personal injury and damage to the inner lining.
NOTICE
The drain pan was not designed to capture the water created when manually
defrosting. To prevent water from overflowing the drain pan and possibly
damaging water sensitive flooring, the unit must be removed from cabinetry.
To defrost:
- Disconnect power to the unit.
- Remove all products from the interior.
- Prop the door in an open position (2 in. [50 mm] minimum).
- Allow the frost to melt naturally.
- After the frost melts completely clean the interior and all removed components. (See INTERIOR CLEANING).
- When the interior is dry, reconnect power and turn unit on.
Cleaning Condenser
INTERVAL – EVERY SIX MONTHS
To maintain operational efficiency, keep the front grille free of dust and
lint, and clean the condenser when necessary. Depending on environmental
conditions, more or less frequent cleaning may be necessary.
Disconnect electric power to the unit before cleaning the condenser.
NOTICE
DO NOT use any type of cleaner on the condenser unit.
- Remove the grille.
- Clean the condenser coil using a using a soft brush with a “combing” action or vacuum cleaner.
- Install the grille.
Extended Non-Use
VACATION/HOLIDAY, PROLONGED SHUTDOWN
The following steps are recommended for periods of extended non-use:
- Remove all consumable content from the unit.
- Disconnect the power cord from its outlet/socket and leave it disconnected until the unit is returned to service.
- If ice is on the evaporator, allow ice to thaw naturally.
- Clean and dry the interior of the unit. Ensure all water has been removed from the unit.
- The door must remain open to prevent formation of mold and mildew. Open door a minimum of 2″ (50 mm) to provide the necessary ventilation.
WINTERIZATION
If the unit will be exposed to temperatures of 40°F (5°C) or less, the steps
above must be followed.
For questions regarding winterization, please call U-Line at 414.354.0300.
Damage caused by freezing temperatures is not covered by the warranty.
Service
Troubleshooting
BEFORE CALLING FOR SERVICE
If you think your U-Line product is malfunctioning, read the CONTROL OPERATION section to clearly understand the function of the control.
If the problem persists, read the NORMAL OPERATING SOUNDS and TROUBLESHOOTING GUIDE sections below to help you quickly identify common problems and possible causes and remedies. Most often, this will resolve the problem without the need to call for service.
IF SERVICE IS REQUIRED
If you do not understand a troubleshooting remedy, or your product needs service, contact U-Line Corporation directly at +1.414.354.0300.
When you call, you will need your product Model and Serial Numbers. This information appears on the Model and Serial number plate located on the upper right or rear wall of the interior of your product.
NORMAL OPERATING SOUNDS
All models incorporate rigid foam insulated cabinets to provide high thermal efficiency and maximum sound reduction for its internal working components. Despite this technology, your model may make sounds that are unfamiliar.
Normal operating sounds may be more noticeable because of the unit’s environment. Hard surfaces such as cabinets, wood, vinyl or tiled floors and paneled walls have a tendency to reflect normal appliance operating noises.
Listed below are common refrigeration components with a brief description of the normal operating sounds they make. NOTE: Your product may not contain all the components listed.
- Compressor: The compressor makes a hum or pulsing sound that may be heard when it operates.
- Evaporator: Refrigerant flowing through an evaporator may sound like boiling liquid.
- Condenser Fan: Air moving through a condenser may be heard.
- Automatic Defrost Drain Pan: Water may be heard dripping or running into the drain pan when the unit is in the defrost cycle.
TROUBLESHOOTING GUIDE
ELECTROCUTION HAZARD. Never attempt to repair or perform maintenance on the unit before disconnecting the main electrical power. Troubleshooting – What to check when problems occur:
CHECKING PRODUCT TEMPERATURE
To check the actual product temperature in the unit:
- Partially fill a plastic (nonbreakable) bottle with water.
- Insert an accurate thermometer.
- Tighten the bottle cap securely.
- Place the bottle in the desired area for 24 hours.
- Avoid opening the unit during the testing period.
- After 24 hours, check the temperature of the water.
If required, adjust the temperature control in a small increment (see CONTROL OPERATION).
Causes which affect the internal temperatures of the cabinet include:
- Temperature setting.
- Ambient temperature where installed.
- Installation in direct sunlight or near a heat source.
- The number of door openings and the time the door is open.
- The time the internal light is illuminated. (This mainly affects product on the top rack or shelf.)
- Obstruction of front grille or condenser.
Wire Diagram
Product Liability
Field service technicians are authorized to make an initial assessment in the
event of reported damages. If there are any questions about the process
involved, the technician should call U-Line for further explanation.
While inspecting for defects or installation issues, photos should be taken to document any damages or issues found.
During the assessment, if the service technician is able to find the source of the damage and it can be resolved by replacement of a part, the servicer is authorized to replace the part in question. The part that caused the damage must be returned to U-Line in its entirety. The part must be clearly labeled with the serial number of the unit it was removed from, the date, and the servicer who removed the part.
If the service technician determines the damage is the result of installation issues (water connection/drain, etc.), the consumer would be notified and the issues shall be resolved at the direction of the consumer.
If damage is evident and the service technician is unable to find the source, U-Line must be contacted at +1.414.354.0300 for further direction.
8900 N. 55th Street • Milwaukee, WI 53223
T: +1.414.354.0300 • F: +1.414.354.5696
Website: www.u-line.com
Right product. Right place.
Right temperature Since 1962.
Warranty Claims
The following information defines the parameters for filing a warranty claim:
- Valid serial number needed
- Valid model number needed
- Claims must be submitted online at www.U‑LineService.com
- 60 day submittal deadline from date of completed service
- Only one repair or unit per warranty claim
- Part order numbers will be required when submitting for warranty labor
Units must be registered prior to warranty submittal. Customers may register at www.U-Line.com. A proof of purchase is required. We also accept the following information to update warranty:
- New construction occupancy documents
- Closing paperwork
- Final billing – Remodel
Warranty parts will be shipped at no charge after U-Line confirms warranty status. Please provide the model, serial number, part number and part description. Some parts will require color or voltage information.
Parts
Ordering Replacement Parts
Parts may be ordered online at www.U-Line.com See our
contact information below:
www.U-LineService.com (with service login)
Phone Number: +1.414.354.0300
NOTICE
Use only genuine U-Line replacement parts.
The use of non-U-Line parts can reduce speed of ice production, cause water to
overflow from ice maker mold, damage the unit, and void the warranty.
Warranty parts will be shipped at no charge after U-Line confirms warranty status. Please provide the model, serial number, part number and part description. Some parts will require color or voltage information.
If U-Line requires the return of original parts, we will inform you when the
parts order is taken. This requirement will be noted on your packing list. A
prepaid shipping label will be emailed to you. Please enclose a copy of the
parts packing list and be sure the model and serial numbers are legible on the
paperwork.
Tag the part with the reported defect.
Customers and non-authorized servicers may order nonwarranty parts at
www.u-line.com. Authorized servicers
with a servicer login may order non-warranty parts at www.u-lineservice.com.
R-600A Specifications
For R-600a refrigerant service tips and more videos, go to:
www.u-line.com/videos.
Flammability warnings for a pure-iso-butane refrigerant.
Gloves and Eye Protection must be used.
R-600a is considered non-toxic, but is flammable when mixed with air.
Keep a dry powder type fire extinguisher in the work area.
R-600a is heavier than air, do not allow any leakage/migration to low areas such as basements and stairs.
Never use a torch on a fully charged refrigeration system.
Never substitute U-Line OEM replacement parts or methods of construction.
R-600a must be stored and transported in approved containers.
Only skilled and well trained service technicians permitted to service R-600a equipped products.
All tools and equipment must be approved for use with R-600a refrigerant.
Local, state and federal laws, standards must be observed along with proper certification and licensing.
Ventilation is required during servicing.
No conversions to R-600a from any other refrigerants. OEM R-600a equipped unit only.
Service area must be free of ignition sources.
No smoking is allowed in the service area.
All replacement electrical components must be OEM and installed properly (sealed and covered).
If the evaporator is cold prior to service, it must be thawed prior to service.
When using a vacuum pump, start pump before opening refrigeration system.
Vacuum pump and recovery equipment should be at least 10 feet from the work area.
It is recommended that a simple LPG gas detector is on site during service.
Ensure that all R-600a is removed from the system prior to brazing any part of the sealed system.
Only a clean, dry leak free system should be charged with R-600a.
R-600A SPECIFICATIONS/LABELING
R-600a equipped products are labeled (both the unit and the compressor).
R-600a is colorless and odorless.
R-600a is considered non-toxic, but is flammable when mixed with air.
Do not remove or alter any R-600a labeling on the product.
Use only a refrigerant grade R-600a from a properly labeled container.
RECOVERING/RECLAIMING R-600A
(R-600a has been exempted from recovery/reclaiming requirements by the US EPA)
Recovery/Reclaiming equipment must be approved for use with R-600a.
Ensure the evaporator is at room temperature prior to recovery/reclaiming
R-600a.
Use a common piercing pliers or piercing valve to remove
R-600a from the compressor process tube. (Note: Piercing devices must not be
left on the system and must be replaced with a Schrader type valve.)
Evacuate/reclaim via the piecing pliers to ensure the system is empty of R-600a before any system work is performed.
The recovery cylinder must be evacuated (no air inside) prior to accepting R-600a.
The recovery cylinder must not be filled more than 45% safe fill level and refrigerants must not be mixed.
The recovery cylinder must be clearly marked with R- 600a and Flammable Warning labels.
Ensure proper ventilation during recovery/reclaiming of R- 600a.
Start vacuum pump/recovery pump prior to piercing the compressor process tube.
Follow recovery/reclaim OEM instructions for the specific equipment used.
SYSTEM REPAIR
Ensure no residual R-600a refrigerant is left within the system prior to
repair (simple venting is not sufficient).
Evacuate and charge with dry nitrogen for leak checks.
Repair leaks or replace system parts as required.
When re-brazing, the system must be purged with dry nitrogen and at least one access point open to the atmosphere.
When re-brazing, proper ventilation is required along with constant monitoring for the presence of R600a refrigerant.
The filter dryer must be replaced any time the sealed system is serviced.
No system should be open to the atmosphere for longer than 15 minutes to avoid moisture migration into the system components.
LEAK DETECTION
After removal of the R-600a, the unit can be charged with dry nitrogen or
helium.
Electronic leak detection or soap solution can be used to check for
nitrogen/helium leaks.
Never use a halide torch or lighted match to check the system for leaks at any time.
The high side of the refrigeration system (compressor discharge to outlet of drier) must be leak tested with the compressor running.
The low side of the refrigeration system (evaporator, compressor and suction line) must be leak tested with the compressor off (equalized pressure).
RECHARGING
No air is ever to be allowed inside the refrigeration system (R-600a
refrigerant or dry nitrogen only).
Never use a torch on a fully charged refrigeration system.
Install a Schrader Type access port on the compressor process stub.
Evacuate the system to 100 microns prior to charging.
Weigh in the R-600a charge using a refrigerant scale. (run compressor an extra
two minutes to clear the charging hoses).
Seal the Schrader Type access port, a proper cap and seal must be used to close the system.
SUMMARY
Safely handling R-600a requires proper procedures and training.
R-600a approved service tools must be used.
R-600a labeling must not be removed or altered.
Proper ventilation during service is required.
Never apply a torch to a charged R-600a refrigeration system.
Use OEM replacement service parts and do not alter the construction of the
unit.
System Diagnosis Guide
REGRIGERATION SYSTEM DIAGNOSIS GUIDE
Compressor Specifications
Electrocution can cause death or serious injury.
Burns from hot or cold surfaces can cause serious injury. Take precautions
when servicing this unit.
Disconnect the power source.
Do not stand in standing water when working around electrical appliances.
Make sure the surfaces you touch are not hot or frozen.
Do not touch a bare circuit board unless you are wearing an anti-static wrist
strap that is grounded to an electrical ground or grounded water pipe.
Handle circuit boards carefully and avoid touching components.
*All resistance readings are + 10%
*All resistance readings are + 10%
Troubleshooting – Extended
Never attempt to repair or perform maintenance on the unit until the main electrical power has been disconnected from the unit.
SPECIFIC ERRORS AND ISSUES
The advanced diagnostic capabilities of the electronic controls utilized on
the 1, 3, and 5 Class units allow for easy and thorough troubleshooting.
Navigation of the control is the key and is explained in the CONTROL OPERATION section of the manual, along with control button layout, control function descriptions, a service mode menu and service menu selection explanations.
Verification of temperature and thermistor performance can be identified by directly viewing thermistor readings in the service mode.
Included in this section are some diagnostic tips; if additional help is required, please contact the U-Line Corp, “Customer Care Facility” at +1.414.354.0300 for assistance.
NORMAL OPERATING SOUNDS
All models incorporate rigid foam insulated cabinets to provide high thermal efficiency and maximum sound reduction for its internal working components. Despite this technology, your model may make sounds that are unfamiliar.
Normal operating sounds may be more noticeable because of the unit’s environment. Hard surfaces such as cabinets, wood, vinyl or tiled floors and paneled walls have a tendency to reflect normal appliance operating noises.
Listed below are common refrigeration components with a brief description of the normal sounds they make. NOTE: Your product may not contain all the components listed.
- Compressor: The compressor makes a hum or pulsing sound that may be heard when it operates.
- Evaporator: Refrigerant flowing through an evaporator may sound like boiling liquid.
- Condenser Fan: Air moving through a condenser may be heard.
- Automatic Defrost Drain Pan: Water may be heard dripping or running into the drain pan when the unit is in the defrost cycle.
Solenoid Valves: An occasional clicking sound may be heard as solenoid valves are operated.
TROUBLESHOOTING GUIDE
MAIN CONTROL
The main control board is very robust and is rarely the cause of system
issues. It is important to fully diagnose the board for any suspected failures
before attempting to remove the board for replacement or service. Follow the
guidelines below to fully test and diagnose the main control.
Power Fault
If the unit does not (or seems to not) power on, follow the flow chart below
to help diagnose the issue. Before beginning it is important to first verify
the unit is not simply set to sabbath mode.
Precautions must be taken while working with live electrical equipment. Be sure to follow proper safety procedures while performing tests on live systems.
PLUNGER SWITCH
A plunger switch is used to monitor door state. When the door is closed it
comes into contact with the plunger which closes a circuit which turns the
light and display off. When the door is open the plunger moves outward and
opens the circuit. If the door is left open for longer than 5 minutes the
switch will trigger an error code and set an audible warning.
Control Operation-Service
UI BUTTON LAYOUT
1. Up Button
-Increases temperature
-Navigates through service menu
-LED activated with button activation
2. Down Button
-Decreases temperature
-Navigates through service menu
-LED activated with button activation
3. Light Button
-Activates light for 3 hours on select models
-Used to select items in service menu
-LED activated with button activation
CONTROL FUNCTION GUIDE
DOOR ALERT NOTIFICATION
When the door is left open for more than 5 minutes:
- An audible tone will sound for several seconds every minute.
- “dr” will appear in display.
Close door to silence alert and reset.
VIEWING ACTUAL TEMPERATURE
In viewing temperature in these modes any offsets are taken into account. Th’s
means that if you p ace a thermistor in a known temperature, let’s say ice
water, it may not read the 320F that you would assume. If the control offset
was preset at -30F while you placed the thermistor in an ice bath, the actual
thermistor reading when viewing actual temperature would read 350F. In the
unit this would cause the cabinet to push itself 30 cooler. To view pure
thermistor readings you must go into the service menu and choose the correct
option.
To view the thermistor temperature, push and release the up and down keys. The display will show the corrected refrigerator temperature.
SHOWROOM MODE
This mode is designed to show units in a display environment. When in this
mode the only functions will be the and cabinet lights control. The
compressor, fans, etc. will not operate . To enter/exit this mode hold the
light key and the power key for 5 seconds. The display will flash
Once beep and the degree symboonce an l will begin to flash.
When the degree symbol is flashing the unit will allow the use of the control
for demonstrations. The unit can be left in this mode indefinitely.
ACCESS SERVICE MODE
To access the service menu for this model, remove the two screws that hold the
display together.
Remove display circuit board. Press and hold the far left button on the
display circuit board.
SERVICE MODE GUIDE
NAVIGATE SERVICE MODE
Use up or down arrows to scroll through the menu.
Use the light bulb key to enter or exit menu. If values have been changed,
they will be saved when exiting.
SERVICE MODE GUIDE
-
THERMISTOR 1 — ZONE
This shows the pure thermistor reading with no offsets taken into account. -
THERMISTOR 2 — EVAPORATOR
This shows the pure thermistor reading with no offsets taken into account. -
Does not apply to this model.
-
Does not apply to this model.
-
THERMISTOR 1 — ZONE OFFSET
(DO NOT MAKE AN ADJUSTMENT TO THIS WITHOUT CONTACTING TECH LINE: +1.414.354.0300)
This calibration is only to be used if actual temperature at thermistor #1 is off from set point.
By adjusting the offset higher we can force the unit to drive the temperature down below the set point. (example: adjusting from 0 to +2 will drop the unit temperature 2 degrees) -
THERMISTOR 2 — EVAPORATOR OFFSET (DO NOT MAKE AN ADJUSTMENT TO THIS WITHOUT CONTACTING TECH LINE: +1.414.354.0300)
-
THERMISTOR 3 — AMBIENT OFFSET Not adjustable.
-
Does not apply to this model.
-
THERMISTOR 2 — SET POINT MINUS OFFSET
This shows the thermistor reading with offsets taken into account. -
Does not apply to this model.
-
Does not apply to this model.
-
ADJUST DEFROST INTERVAL — 3 TO 24 HOURS
This will adjust the interval between defrosts from 3 to 24 hours. Adjusting from the factory settings may cause undesired temperature in the refrigerator section. -
ADJUST DEFROST DURATION — 0 TO 99 MINUTES
The length of the defrost can be adjusted 0 to 99 minutes long. The other defrost parameters still apply. Lengthening a defrost may cause higher than normal temperatures in the refrigerator section. -
VIEW ERROR LOG
A list of the errors in the order they occurred will scroll once on the display. All errors are logged in memory. Only door error is displayed on the display and has an audible signal.
E0: Door 1 (upper) open.
E1: Thermistor 1 open.
E2: Thermistor 2 open.
E3: Thermistor 3 open.
E4: Thermistor 4 open (Does not apply to this model).
E5: Thermistor 1 shorted.
E6: Thermistor 2 shorted.
E7: Thermistor 3 shorted.
E8: Thermistor 4 shorted (Does not apply to this model).
E9: Door 2 (lower) open.
P1: Pump Circuit open (Does not apply to this model). -
CLEAR ERROR LOG
To clear errors, press and hold (5 seconds) when CLR is flashing. -
THERMISTOR — 1 DIFFERENTIAL
This number should not be adjusted. -
EVAPORATOR FAN DELAY IN MINUTES — ON
“Fan Delay On” is the amount of time in minutes the fan will be delayed from starting from the beginning of a cooling cycle. Adjustable 0-99 minutes.
18. EVAPORATOR FAN DELAY IN MINUTES — OFF
“Fan Delay Off” is the amount of time in minutes the fan will continue to run at the end of a cooling cycle. Adjustable 0-99 minutes. -
INDIVIDUAL COMPONENT TOGGLE
SEE RELAY/OUTPUT CHART
20. MODEL NUMBER INDICATOR
Displays the two-digit model number of the specific unit. See model list
table.
21. LIGHT ALL LED SEGMENTS
This will illuminate all the LEDs on the display to ensure they work properly.
22. VIEW DEFROST CYCLES
Displays the number of defrosts that have occurred in the past 24 hours.
23. VIEW COMPRESSOR RUNTIME
This will show the number of minutes the compressor has run in the prior cycle
(or current cycle if the compressor was running when service mode was
entered).
24. ACTIVATE DEFROST/HARVEST
Turns on the hot gas bypass valve allowing hot gas to circulate through the
evaporator causing frost to melt.
25. RESTORE FACTORY DEFAULTS
Will restore all adjustable functions to their factory settings.
26. SOFTWARE VERSION — MAIN BOARD
Displays software version of the main control board.
27. SOFTWARE VERSION — USER INTERFACE
Displays software version of the user interface.
28. LOG IN PERIOD
Factory use only – do not adjust.
29. FACTORY TEST MODE
Should be 0.
0. EXIT SERVICE MODE
MODEL LIST
PROGRAMMING THE UNIT TO CORRECT
MODEL NUMBER
Relay / Output Chart
Thermistors
Thermistors are used for various temperature readings.
Thermistors provide reliable temperature readings using a resistance which
varies based on surrounding temperatures. If a faulty thermistor is suspected
it may be tested using an accurate ohmmeter.
Both thermistors in the unit are identical. If a thermistor is suspected of being defective, the resistance can be verified. Place the thermistor in an ice water bath, the resistance should read 16.1k Ohms +/-5% on your meter.
Thermistor connections must be kept clean. A thermistor connection that has become corroded can cause resistance values from the thermistor to change as they pass through a dirty connection to the board.
It is for that reason that we apply dielectric grease to all of our thermistor connections. Dielectric grease will help to keep thermistor connections clean and dry.
If you change a thermistor in the unit please re-apply dielectric grease to the connection. If you encounter a dirty thermistor connection, you should replace the thermistor and the thermistor harness.
Thermistor error information can be found in the Control
Operations – Service section.
This unit has two thermistors.
Thermistor one (Zone):
Located along the right hand side wall. It is used to maintain the operating
temperature within that zone.
Thermistor two (Evaporator):
Located on the evaporator. It is used for defrost.
THERMISTOR FAILURE
Zone Thermistor
If the zone thermistor in the unit fails, the unit will continue to cool in a
backup mode (Self Preservation Mode) to preserve the integrity of the
contents. The unit will otherwise operate normally.
Evaporator Thermistor
If the evaporator thermistor fails, the unit will rely on a preset defrost
timer during defrost cycles. The unit will otherwise operate normally. Refer
to defrost section.
Thermistor Resistance Data
Defrost
This unit defrosts, by default, every 12 hours of compressor runtime for 45
minutes. If you have verified that the unit does not have an ambient air leak,
refer to the Control Operation – Service section and adjust unit to defrost
every 9 hours for 60 minutes. Also, adjust the #2 thermistor to -4 instead of
0.
Remove Fan and Cover
FREEZER
CONVECTION COOLING
This unit is equipped with an advanced convection cooling system. Convection
cooling stabilizes cabinet temperature, cools product faster, and increases
energy efficiency.
Evaporator Fan.
The evaporator fan is responsible for circulating warm air from the refrigeration zone, past the evaporator and back into the refrigerated zone.
The evaporator fan is factory set to have a 1 minute delay at the beginning of a cooling cycle. This delay gives the evaporator time to cool properly before warm air is passed over it. The fan will continue to run for an additional 2 minutes at the end of a cooling cycle. Fan delay times can be modified through the service menu.
Evaporator fan operation is also determined by door switch state. If the door
switch circuit opens, the fan will stop.
When the door switch circuit is closed the fan will either continue running
with the cooling cycle, or if not currently cooling, the fan will run for 1
minute to circulate air.
Note: If the unit is set to sabbath mode, the evaporator fan will no longer
respond to the state of the door switch.
In order to operate efficiently, the evaporator fan blade and vents should be
unobstructed and free of any dust buildup.
Evaporator Fan Replacement
Should the evaporator fan need to be replaced follow the steps below.
1. Remove any product from the unit.
2. Turn off the unit.
3. Remove 2 evaporator cover screws in the ceiling of the unit. (See Figure
4. Grasp evaporator cover and pull forward far enough to see behind the fan
and unplug the fan. Then remove entire evaporator cover assembly.
5. The fan and fan guard are held to the evaporator cover with four screws.
Remove the four screws held in place by four lock washers and four nuts. (See
Figure 2)
Figure 2: Remove Fan Assembly from Evaporator Cover
NOTICE
Fan must be oriented to pull air in through lower evaporator cover vents and
push air out at fan mounting location.
6. Installation is the reverse of removal.
U-Line Corporation (U-Line) Limited Warranty
One Year Limited Warranty
For one year from the date of original purchase, this warranty covers all
parts and labor to repair or replace any part of the product that proves to be
defective in materials or workmanship. For products installed and used for
normal residential use, material cosmetic defects are included in this
warranty, with coverage limited to 60 days from the date of original purchase.
All service provided by U-Line under the above warranty must be performed by a
U-Line factory authorized servicer, unless otherwise specified by U-Line.
Service provided during normal business hours.
Two Year Limited Warranty (5 Class Product)
For two years from the date of original purchase, this warranty covers all
parts and labor to repair or replace any part of the product that proves to be
defective in materials or workmanship. For products installed and used for
normal residential use, material cosmetic defects are included in this
warranty, with coverage limited to 60 days from the date of original purchase.
All service provided by U-Line under the above warranty must be performed by a
U-Line factory authorized servicer, unless otherwise specified by U-Line.
Service provided during normal business hours.
Available Second & Third Year Limited Warranty
In addition to the standard one and two year warranties outlined above, U-Line
offers a one year extension of the warranties from the date of purchase, free
of charge. To take advantage of this extension, you must register your product
with U-Line within 60 days from the date of purchase at u-line.com and provide
proof of purchase. Nugget Ice Machine proof of purchase must include the
purchase of an in-line water filter and filter head to qualify for this
additional limited warranty.
Five Year Sealed System Limited Warranty
For five years from the date of original purchase, U-Line will repair or
replace the following parts, labor not included, that prove to be defective in
materials or workmanship: compressor, condenser, evaporator, drier, and all
connecting tubing. All service provided by U-Line under the above warranty
must be performed by a U-Line factory authorized servicer, unless otherwise
specified by U-Line. Service provided during normal business hours.
Terms
These warranties apply only to products installed in any one of the fifty
states of the United States, the District of Columbia, or the ten provinces of
Canada. The warranties do not cover any parts or labor to correct any defect
caused by negligence, accident or improper use, maintenance, installation,
service, repair, acts of God, fire, flood or other natural disasters. The
product must be installed, operated, and maintained in accordance with your
product’s User Guide.
The remedies described above for each warranty are the only ones that U-Line will provide, either under these warranties or under any warranty arising by operation of law. U-Line will not be responsible for any consequential or incidental damages arising from the breach of these warranties or any other warranty, whether express, implied, or statutory. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. These warranties give you specific legal rights, and you may also have other rights which vary from state to state.
Any warranty that may be implied in connection with your purchase or use of the product, including any warranty of merchantability or any warranty fit for a particular purpose is limited to the duration of these warranties, and only extends to five years in duration for the parts described in the section related to the five year limited warranty above. Some states do not allow limitations on how long an implied warranty lasts, so the above limitations may not apply to you.
- The warranties only apply to the original purchaser and are non-transferable.
- The second, third, and five year warranties cover products installed and used for normal residential or designated marine use only.
- The warranties apply to units operated outside only if designed for outdoor use by model and serial number.
- U-Line Commercial products are covered by the one year and 5 year limited warranties and are not eligible for the second and third year limited warranties.
- Replacement water filters, light bulbs, and other consumable parts are not covered by these warranties.
- The start of U-Line’s obligation is limited to four years after the shipment date from U-Line.
- In-home instruction on how to use your product is not covered by these warranties.
- Food, beverage, and medicine loss are not covered by these warranties.
- If the product is located in an area where U-Line factory authorized service is not available, you may be responsible for a trip charge or you may be required to bring the product to a U-Line factory authorized service location at your own cost and expense.
- Units purchased after use as floor displays, and/or certified reconditioned units, are covered by the limited one year warranty only and no coverage is provided for cosmetic defects.
- Signal issues related to Wi-Fi connectivity are not covered by these warranties.
For parts and service assistance, or to find U-Line factory authorized service
near you, contact U-Line:
8900 N. 55th Street, Milwaukee, WI 53223 • u-line.com •
onlineservice@u-line.com • +1.414.354.0300
Copyright U-Line Corporation. All Rights Reserved. | Publication Number 30379 | 11/2022 Rev. P
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References
- harm.P65warnings.CA
- BestShop | Best Price, Smart Shopping
- LineService.com
- Производство и продажа гибридных широкоформатных УФ принтеров . Point.by
- two.no in parked
- Kosher Certificates | Kosher Certification | STAR-K
- u-lineservice.com
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