User Manual
09/2024
178UBB48GHC
Back Bar Refrigerators
Base Models:
#178UBB36HC
#178UBB48HC
#178UBB60HC
#178UBB72HC
#178UBB1HC
#178UBB2HC
#178UBB3HC
#178UBB4HC
#178UBB378
(Variations listed on page 3)
Note:
Read the manual thoroughly prior to equipment setup, operation, and maintenance.
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Table of Contents
Model Variations ..............................................................................................................3
Warnings ............................................................................................................................ 4
Installation ......................................................................................................................... 5
Cabinet Location Guidelines ........................................................................................ 5
Electrical ............................................................................................................................ 6
Adjusting Temperature .................................................................................................. 6
Safety / Warning .............................................................................................................. 7
Operation / Maintenance .............................................................................................. 8
Troubleshooting ............................................................................................................... 10
NEMA 5-15P
30290793029079
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Model Variations
Base Model Black Stainless Steel Galvanized Top
178UBB36HC
178UBB36GH 178UBB36GHCS —
178UBB36GHC 178UBB36HCS —
178UBB48HC
178UBB48GHC 178UBB48GHCS 178UBB48GT
178UBB48SHC 178UBB48HCS 178UBB48GTS
— 178UBB48SHCS 178UBB48GTG
— — 178UBB48GTGS
— — 178UBB48SGT
— — 178UBB48SGTS
178UBB60HC
178UBB60GHC 178UBB60GHCS 178UBB60GT
178UBB60SHC 178UBB60HCS 178UBB60GTS
— 178UBB60SHCS 178UBB60GTG
— — 178UBB60GTGS
— — 178UBB60SGT
— — 178UBB60SGTS
178UBB72HC
178UBB72GHC 178UBB72GHCS 178UBB72GT
178UBB72SHC 178UBB72HCS 178UBB72GTS
— 178UBB72SHCS 178UBB72GTG
— — 178UBB72GTGS
— — 178UBB72SGT
— — 178UBB72SGTS
178UBB1HC 178UBB1GHC 178UBB1HCS —
178UBB2HC
178UBB2GHC 178UBB2GHCS —
— 178UBB2HCS —
178UBB3HC
178UBB3GHC 178UBB3GHCS —
— 178UBB3HCS —
178UBB4HC
178UBB4GHC 178UBB4GHCS —
— 178UBB4HCS —
178UBB378
178UBB378G 178UBB378GS —
— 178UBB378S —
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Warnings
DANGER – RISK OF FIRE OR EXPLOSION. FLAMMABLE REFRIGERANT USED. TO BE REPAIRED ONLY BY
TRAINED SERVICE PERSONNEL. DO NOT PUNCTURE REFRIGERANT TUBING.
PELIGRO – RRIESGO DE INCENDIO O EXPLOSION. REFRIGERANTE INFLAMABLE UTILIZADO. PARA
SER REPARADO SOLAMENTE POR PERSONAL DE SERVICIO CALIFICADO. NO PINCHAR LA TUBERÍA
REFRIGERANTE.
DANGER – RISQUE DE FEU OU D’EXPLOSION. LE FRIGORIGÈNE EST INFLAMMABLE. CONFIER LES
RÉPARATIONS À UN TECHNICIEN SPÉCIALISÉ. NE PAS PERFORER LA TUBULURE CONTENANT LE
FRIGORIGENE.
CAUTION – RISK OF FIRE OR EXPLOSION. FLAMMABLE REFRIGERANT USED. CONSULT REPAIR MANUAL/
OWNER’S GUIDE BEFORE ATTEMPTING TO SERVICE THIS PRODUCT. ALL SAFETY PRECAUTIONS MUST BE
FOLLOWED.
ATENCION – RIESGO DE INCENDIO O EXPLOSIÓN. REFRIGERANTE INFLAMABLE
UTILIZADO. CONSULTE EL MANUAL DE REPARACIÓN / GUÍA DEL PROPIETARIO ANTES DE INTENTAR DAR
SERVICIO A ESTE PRODUCTO. DEBEN CUMPLIR CON TODAS LAS PRECAUCIONES DE SEGURIDAD.
ATTENTION – RISQUE DE FEU OU D’EXPLOSION. LE FRIGORIGÈNE EST INFLAMMABLE. CONSULTER LE
MANUEL DU PROPRIÉTAIRE/GUIDE DE RÉPARATION AVANT DE TENTER UNE RÉPARATION. TOUTES LE
MESURES DE SÉCURITÉ DOIVENT ÊTRE RESPECTÉES.
CAUTION – RISK OF FIRE OR EXPLOSION DUE TO PUNCTURE OF REFRIGERANT TUBING; FOLLOW
HANDLING INSTRUCTIONS CAREFULLY. FLAMMABLE REFRIGERANT USED.
ATENCION – RIESGO DE INCENDIO O EXPLOSIÓN DEBIDO A LA PERFORACION DE LA TUBERÍA
REFRIGERANTE; SIGA LAS INSTRUCCIONES DE MANIPULACIÓN CON CUIDADO. REFRIGERANTE
INFLAMABLE UTILIZADO.
ATTENTION – RISQUE DE FEU OU D’EXPLOSION SI LA TUBULURE CONTENTANT LE FRIGORIGÈNE EST
PERFORÉE; SUIVRE LES INSTRUCTIONS DE MANUTENTION AVEC SOIN. LE FRIGORIGÈNE EST
INFLAMMABLE.
CAUTION – RISK OF FIRE OR EXPLOSION DUE TO FLAMMABLE REFRIGERANT USED. FOLLOW
HANDLING INSTRUCTIONS CAREFULLY IN COMPLIANCE WITH LOCAL GOVERNMENT
REGULATIONS.
ATENCION – RIESGO DE INCENDIO O EXPLOSIÓN DEBIDO A REFRIGERANTE INFLAMABLE UTILIZADO.
SIGA LAS INSTRUCCIONES DE MANIPULACIÓN CON CUIDADO CONFORME A LAS REGLAS DE LA
MUNICIPALIDAD.
ATTENTION – RISQUE DE FEU OU D’EXPLOSION SI LE FRIGORIGÈNE EST INFLAMMABLE. SUIVRE
LES INSTRUCTIONS DE MANUTENTION AVEC SOIN CONFORMÉMENT AUX RÈGLEMENTATION
GOUVERNEMENTALE LOCAUX.
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Installation
This unit is intended for use in a temperature-controlled environment less than 75ºF and
60% relative humidity.
IMPORTANT – Read Before Installation:
• If the shelf has a raised lip, the lip needs to be installed facing up towards the rear of the cabinet to
promote proper airflow. Failure to install the shelves properly is considered user-error and is not
covered by warranty.
• If the unit has recently been transported on its side, let the unit stand upright for a minimum of
24 hours before plugging it in.
• Make sure that the unit has reached the desired temperature before loading the unit with products.
This unit is meant for keeping cold products cold, not chilling warm products.
• Make sure that there is proper ventilation around the unit in the area where it will operate.
• Make sure all accessories are installed (i.e., shelves, shelf clips, casters) before plugging the unit in.
• Do not attempt to remove or repair any component of the unit. Consult an authorized service
technician for servicing/repair.
• Do not hang on doors or sit inside the unit.
• Do not store flammable, explosive, or corrosive liquids or gas in or near the cooler.
• Read through the manual in its entirety.
• This unit is designed to perform in a temperature-controlled environment at 60% relative humidity.
The unit should be located away from doors, air ducts, and fans that could disrupt airflow and
negatively impact performance.
Cabinet Location Guidelines
• Install the unit on strong, level surface.
- If the surface is uneven, the unit may be noisy.
- The unit may malfunction if the surface is uneven.
• Install the unit in an indoor, well-ventilated area.
- For best performance, maintain clearance of 3” on the back and sides of the unit.
- Do not use outdoors. For indoor use only.
- Avoid direct sunlight.
• Avoid installation in a high humidity and/or dusty area.
- Humidity above 60% can cause the unit to rust, collect condensation, and may decrease eciency.
- Dust collected on the condenser coil will cause the unit to malfunction.
• Select a location away from heat and moisture-generating equipment.
- Ambient temperatures above 75ºF may cause the compressor to malfunction.
- For optimal performance, this unit should not be used in environments with ambient temperatures
exceeding 75ºF.
- The unit should not be placed in areas with an ambient temperature over 90ºF.
- Equipment malfunctions due to ambient temperatures above 90ºcould void the warranty.
- Do not install this unit inside a closet or alcove.
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Electrical
• Ensure that the required voltage is being supplied at all times.
• The unit should be plugged into a grounded and properly-sized electrical outlet with appropriate
over-current projection. NEVER USE AN ADAPTER PLUG! Refer to the electrical requirements
on the unit’s nameplate.
• This unit should have its own dedicated circuit.
• Do not use extention cords.
• Do not unplug your cooler by pulling on the power cord. Grip the plug firmly and pull straight out
from the outlet.
• Ensure the unit is not resting on or against the electrical cord.
• If the unit is not in use for a long period of time, unplug the unit from the outlet.
• To avoid shock and fire hazards, do not plug in or unplug the unit with wet hands.
• After unplugging the unit, wait at least 10 minutes before plugging it back in. Failure to do so could
cause damage to the compressor.
Adjusting Temperature
Your new refrigerator is already factory set to run at
optimum temperatures for food safety and should
require no adjustments.
Refrigerators are set to cycle between a minimum temperature of 33ºF and a maximum temperature of 40ºF.
Adjusting the temperature changes the minimum temperature your unit will run at. Your unit will not run
constantly at this setting. To change it, follow these instructions:
set
mute
Digital Control Units
• Hold “SET” for 1 sec. The display will flash the current minimum temperature.
• Use the arrow buttons to adjust the minimum temperature.
• Press “SET” again to save your settings.
Always remember to calculate the dierential if you change the minimum temperature setting. The cabinet
temperature will fluctuate up to +7 degrees over your set minimum temperature as the compressor runs and
shuts o. Setting the temperature too high will result in unsafe maximum temperatures and possible health
code violations.
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Running a Manual Defrost Cycle
This unit is pre-programmed to run automatic defrost cycles at preset intervals. However, if you would like to
run a manual defrost cycle at any time, follow the steps below:
1. Press the defrost button (snowflake symbol and down arrow) for approximately 3 seconds.
2. Repeat to stop the defrost cycle.
Defrost System:
Refrigerator coils are kept below the freezing point (32ºF). During compressor downtime, the evaporator
fan continues to circulate air through the evaporator coil. This air circulation raises the coil temperature
above the freezing point, melting any accumulated frost. Run-o water is drained into the evaporator pan
and evaporated. Automatic defrost timers automatically initiate at pre-set intervals and for a pre-determined
duration.
Safety / Warning
Pay close attention to the safety notices in this section. Disregarding these notices may lead to
serious injury and/or damage to the unit.
ATTENTION
• To minimize shock and fire hazards, be sure not to overload outlet. Designate one outlet for
your unit.
• Do not use extension cords.
• Do not put your hands under the unit while it is being moved.
• When the unit is not in use for a long period of time, unplug the unit from the outlet.
• After unplugging the unit, wait at least 10 minutes before plugging it back in. Failure to do so could
cause damage to the compressor.
UNPLUG CORD
• To minimize shock and fire hazards, do not plug or unplug the cord with wet hands.
• During maintenance and cleaning, unplug the unit.
PROPER GROUNDING REQUIRED
• To minimize shock and fire hazards, make sure that the unit is properly grounded.
WARNING
• Do not attempt to remove or repair any component unless instructed by factory.
• Make sure that the unit is not resting on or against the electrical cord and plug.
• To minimize personal injury, do not hang on the doors.
• Do not store any flammable and explosive gas or liquids inside the unit.
• Do not attempt to alter or tamper with the electrical cord.
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Operation / Maintenance
WARNING: DISCONNECT POWER CORD BEFORE CLEANING ANY PARTS OF THE UNIT.
NOTE: We strongly recommend that any servicing be performed by an authorized service technician.
Loading Product
• Do not block the air duct/fan at the top of the unit. Maintain a minimum of 4" of clearance between
products and the fan at all times.
• Ensure all shelves are sitting level and properly secured before loading products.
• Do not store flammable and explosive gas or liquids inside the unit.
Cleaning the Condenser Coil
• For ecient operation, keep the condenser surface free of dust, dirt, and lint.
• We recommend cleaning the condenser coil at least once per month.
Cleaning the Fan Blades and Motor
• If necessary, clean the fan blades and motor with a soft cloth.
• If it is necessary to wash the fan blades, cover the fan motor to prevent moisture damage.
Cleaning the Interior of the Unit
• When cleaning the cabinet interior, use a solvent of warm water and mild soap.
• Do not use steel wool, caustic soap, abrasive cleaners, or bleach that may damage the interior finish.
• Wash door gaskets on a regular basis, preferably weekly. Simply remove the door gasket from the
frame of the door, soak in warm water and soap for thirty (30) minutes, dry it with a soft cloth, and
replace it.
• Check door gaskets for proper seal after they are replaced.
• Periodically remove the shelves and pilasters from the unit and clean them with mild soap and warm
water. To remove the pilasters, first, remove the shelves and shelf brackets. Then, simply lift the
pilaster up and out.
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Condenser Coil Cleaning Instructions:
A dusty condenser may lead to high energy consumption, less cooling eectiveness,
and compressor damage.
The condenser coil is located at the bottom behind the panel.
1. Disconnect the electrical power from the unit.
2. Remove the front cover and base cover with a screwdriver.
3. Using a soft brush and/or vacuum, remove the dirt, lint, etc. from the finned condenser coil in a
vertical direction.
4. Clean the condenser with a commercial condenser coil cleaner, available from any kitchen equipment
retailer. Ex. Noble Chemical Tech Line
5. After cleaning, straighten any bent condenser fins with a fin comb.
6. When finished, be sure to reinstall the front cover and base cover.
7. Reconnect the electrical power to the unit.
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Troubleshooting
Problem
Possible Cause
Possible Solution
Compressor not
running.
Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.
Power cord unplugged. Plug in power cord.
Thermostat set too high. Set thermostat to lower temperature.
Cabinet in defrost cycle. Wait for defrost cycle to finish.
Condensing units
run for long periods
of time.
Excessive amount of warm product
placed in cabinet.
Allow adequate time for product to cool down.
Prolonged door opening or door ajar.
Ensure doors are closed when not in use. Avoid opening
doors for long periods of time.
Door gasket(s) not sealing properly.
Ensure gaskets are snapped in completely. Remove gasket
and wash with soap and water. Check condition of gasket
and replace if necessary.
Dirty condenser coil. Clean the condenser coil. (Page 9)
Evaporator coil iced over.
Unplug unit and allow coil to defrost. Make sure thermostat
is not set too cold. Ensure that door gasket(s) are sealing
properly.
Cabinet temperature
is too warm.
Thermostat set too warm. Set thermostat to lower temperature.
Airflow blocked.
Re-arrange product to allow for proper airflow. Make sure
there is at least 4" of clearance from evaporator.
Excessive amount of warm product
placed in cabinet.
Allow adequate time for product to cool down.
Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.
Low refrigerant levels. Contact a service technician to check refrigerant levels.
Prolonged door opening or door ajar.
Ensure doors are closed when not in use. Avoid opening
doors for long periods of time
Interior light is not
working.
Poor switch connection. Turn o light switch and turn it back on.
Bulb is not connected. Make sure the bulb is correctly inserted in the socket.
Bulb has burned out. Replace the bulb.
Condensation is
collecting on the
cabinet and/or floor.
Gasket is not sealing properly. Clean, repair, or replace the gasket as necessary.
Relative humidity is above 60%.
Move unit to area below relative humidity or lower humidity
level.
Other common
problems.
Low refrigerant levels.
Contact a service technician to check refrigerant levels.
Door is slightly ajar.
Make sure door is completely closed.
