Duke RBC 48 48 Inch Refrigerated Back Counter Instruction Manual
- June 9, 2024
- Duke
Table of Contents
Installation and Operation Manual
48” REFRIGERATED BACK COUNTER (RBC 48) DIGITAL
60” REFRIGERATED BACK COUNTER (RBC 60) DIGITAL
RBC 48 48 Inch Refrigerated Back Counter
CAUTION:
Please read this manual completely before attempting to install, operate or
service this equipment
WARNING: Cancer and Reproductive Harm – www.p65warnings.ca.gov
This manual is Copyright © 2019 Duke Manufacturing Co. All rights reserved.
Reproduction without written permission is prohibited. Duke is a registered
trademark of the Duke Manufacturing Co.
IMPORTANT SAFETY INSTRUCTIONS
Throughout this manual, you will find the following safety words and symbols
that signify important safety issues with regards to operating or maintaining
the equipment.
WARNING: Indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION: Indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.
CAUTION: Indicates Important Information
Indicates electrical shock hazard which, if not avoided, could result in
death or serious injury and/or equipment damage.
Indicates hot surface which, if not avoided, could result in minor or
moderate injury.
Indicates risk of fire or explosion. Flammable refrigerant used which, if not
avoided, could result in death or serious injury.
CAUTION: Electrical shock hazard. Do not wash with water jet or hose.
In addition to the warnings and cautions in this manual, use the following
guidelines for safe operation of the unit.
- Read all instructions before using equipment.
- For your safety, the equipment is furnished with a properly grounded cord connector. Do not attempt to remove or disconnect the grounded connector.
- Install or locate the equipment only for its intended use as described in this manual.
- Do not use corrosive chemicals on this equipment.
- Do not operate this equipment if it has a damaged cord or plug, if it is not working properly, or if it has been damaged or dropped.
- This equipment should be serviced by qualified personnel only. Contact the nearest Duke authorized service facility for adjustment or repair.
- Do not immerse cord or plug in water.
- Keep cord away from heated surfaces.
- Do not allow cord to hang over edge of table or counter.
The following warnings and cautions appear throughout this manual and should be carefully observed.
- Turn the unit off, disconnect the power source and allow unit to cool down before performing any service or maintenance on the unit.
- The procedures in this manual may include the use of chemical products. You must read the Material Safety Data Sheets before using any of these products.
- The unit should be grounded according to local electrical codes to prevent the possibility of electrical shock. It requires a grounded receptacle with dedicated electrical lines, protected by fuses or circuit breaker of the proper rating, in accordance with all applicable regulations.
- Disposal of the unit must be in accordance with local environmental codes and/or any other applicable codes.
- This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
- Minimum clearances must be maintained from all walls and combustible materials.
- Keep the equipment area free and clear of combustible material.
- Adequate clearance for air openings.
- Unit exhausts air to the bottom and the rear.
- Do not set unit on a curb or seal to the wall.
- Do not block the slots in the front kickplate
- Operate equipment only on the type of electricity indicated on the specification plate.
- Top of unit weight load limit not to exceed 500 lbs.
- Do Not move unit with equipment loaded on top.
- Retain this manual for future reference.
INTRODUCTION
This publication contains information regarding the installation and operation
of Duke Refrigerated Back Counter units. The information contained within
applies to the models RBC 48 and RBC 60. Please read this manual completely
before attempting to install and/or operate this equipment.
Model number RBC 48 describes the 48” wide version of the Refrigerated Back
Counter. (Fig. 1)
Model number RBC 60 describes the 60” wide version of the Refrigerated Back
Counter. (Fig. 2)
SPECIFICATION
Model| Volts| Frequency
(Hz)| Amps| Watts
(Label)| Refrigerant| HEIGHT
in, (cm)| WIDTH
in, (cm)| LENGTH
in, (cm)
---|---|---|---|---|---|---|---|---
R BC-48| 120| 60| 4.| 530| R-513A| 40.0 (101.6)| 29.50 (74.9)| 48.0 (121.9)
RBC-48| 220| 60| 3.| 616| 134A| 40.0 (101.6)| 29.50 (74.9)| 48.0 (121.9)
RBC-48| 230| 50| 3.| 600| 134A| 40.0 (101.6)| 29.50 (74.9)| 48.0 (121.9)
RBC-48| 230| 50| 2.| 530| R290| 40.0 (101.6)| 29.50 (74.9)| 48.0 (121.9)
R BC-60| 120| 60| 4.| 530| R-513A| 40.0 (101.6)| 29.50 (74.9)| 60.0 (152.4)
RBC-60| 220| 60| 3.| 616| 134A| 40.0 (101.6)| 29.50 (74.9)| 60.0 (152.4)
RBC-60| 230| 50| 3.| 575| 134A| 40.0 (101.6)| 29.50 (74.9)| 60.0 (152.4)
RBC-48| 230| 50| 2.| 530| R290| 40.0 (101.6)| 29.50 (74.9)| 60.0 (152.4)
SERIAL NUMBER
Always have the serial number of your unit available when calling for parts or
service.
RECEIVING & INSPECTING THE EQUIPMENT
Care should be taken during unloading so the equipment is not damaged while
being moved into the building.
- Visually inspect the exterior of the package and skid or container. Any damage should be noted and reported to the delivering carrier immediately.
- If damaged, open and inspect the contents with the carrier.
- In the event that the exterior is not damaged, yet upon opening, there is concealed damage to the equipment notify the carrier. Notification should be made verbally as well as in written form.
- Request an inspection by the shipping company of the damaged equipment. This should be done within 10 days from receipt of the equipment.
- Check the lower portion of the unit to be sure legs/casters are not bent.
- Also view compressor compartment housing and visually inspect the refrigeration package. Be sure lines are secure and base is still intact.
- Freight carriers can supply the necessary damage forms upon request.
- Retain all shipping material until an inspection has been made or waived.
INSTALLATION
INSTALLATION – Location
Units represented in this manual are intended for indoor use only. Be sure the
location chosen has a floor or counter strong enough to support the total
weight of the units. Reinforce the floor or counter if necessary to provide for
maximum loading. For the most efficient operation, be sure to provide good air
circulation inside and out. These units should be located so that they can be
moved for service. Major service to the refrigeration system is done from the
end of the cabinet.
The outline dimensional drawings for the units are shown in Figures 1 and 2.
INSTALLATION – Inside Unit
Take care not to block air flow to the fans and allow space along the front,
back and sides.
INSTALLATION – Outside Unit
Be sure that the unit has access to ample air; avoid hot corners and locations
near stoves and ovens.
CAUTION: This unit exhausts air to the bottom and the back. Do not seal
the unit to the wall or set unit on a curb. The ventilation slots in the
kickplate must remain open.
INSTALLATION – Leveling
Be sure that the units are placed on a firm, flat surface/floor. Check for cracks
in flooring or tile and avoid these areas if possible. If necessary place
support pads, properly rated for the weight of the unit, to “bridge” uneven or
cracked flooring. Level unit accordingly.
INSTALLATION – Stabilizing
Use the leg adjustments to insure that the unit is solid to the floor surface
at all four contact points. Insure that the unit does not “rock” when pressure
is applied to the top corners.
INSTALLATION – Electrical Wiring
The RBC 48 and RBC 60 are available as a 120VAC, 60 Hz or as 220VAC, 50 Hz
dependent on model. All electrical connections should be performed by a
certified electrician and should comply with local electrical codes for your
municipality.
WARNING: REFER TO THE AMPERAGE DATA LIST IN THE SPECIFICATIONS OR THE
SERIAL TAG DATA AND YOUR LOCAL CODE OR THE NATIONAL ELECTRICAL CODE TO BE SURE
UNIT IS CONNECTED TO THE PROPER POWER SOURCE. A PROTECTED CIRCUIT OF THE
CORRECT VOLTAGE AND AMPERAGE MUST BE RUN FOR CONNECTION OF THE SUPPLY CORD OR
PERMANENT CONNECTION TO THE UNIT. THE POWER MUST BE TURNED OFF AND
DISCONNECTED WHENEVER PERFORMING MAINTENANCE OR REPAIR FUNCTIONS.
OPERATION
OPERATION – Location of Controls
The refrigeration control/temperature setting adjustment is located on the
back splash. The energy saving mode switch (if equipped) is located inside the
right front access panel. (See figure 3 & 4.) Remove front panel and access
plate.
These are the only user adjustable components on the unit.
OPERATION – Operating Procedure
Press and hold the (i) button to display setpoint. Keep (i) button pressed and
use the up/down arrows to adjust setpoint. When the (i) button is released,
the new setpoint is stored. To exit from the setup, press the power button or
wait 30 seconds. Display will display “dEF” while unit is in defrost mode.
Check the cooling specifications required
for the products/goods to be stored.
Use a simple thermometer to
set to a specific temperature. Allow time for temperature changes before making
a final temperature check.
MAINTENANCE
MAINTENANCE – Stainless Steel Care & Cleaning
To prevent discoloration or rust on stainless steel several important steps
need to be taken. Stainless steel contains 70-80% iron which will rust. It
also contains 12-30% chromium which forms an invisible passive film over the
steels surface which acts as a shield against corrosion. As long as the
protective layer is intact, the metal will not corrode. If the film is broken
or contaminated, outside elements can begin to breakdown the steel and begin
to form rust or discoloration.
Proper cleaning of stainless steel requires soft cloths or plastic scouring
pads.
CAUTION: Never use steel pads, wire brushes or scrapers.
Cleaning solutions need to be alkaline based or non-chloride cleaners. Any
cleaner containing chlorides will damage the protective film of the stainless
steel. Chlorides are also commonly found in hard water, salts and household
and industrial cleaners. If cleaners containing chlorides are used, be sure to
rinse repeatedly and dry thoroughly upon completion.
Routine cleaning of stainless steel can be done with soap and water. Extreme
stains or grease should be cleaned with a non-abrasive cleaner and plastic
scrub pad. It is always good to rub with the grain of the steel. There are
also stainless steel cleaners available which can restore and preserve the
finish of the steels protective layer.
Early signs of stainless steel breakdown can consist of small pits and cracks.
If this has begun, clean thoroughly and start to apply stainless steel
cleaners in attempt to restore the passivity of steel.
WARNING
NEVER USE AN ACID BASED CLEANING SOLUTION!
MANY FOOD PRODUCTS HAVE AN ACIDIC CONTENT WHICH CAN DETERIORATE THE FINISH.
BE SURE TO CLEAN ALL FOOD PRODUCTS FROM ANY STAINLESS STEEL SURFACE.
COMMON ITEMS INCLUDE, TOMATOES, PEPPERS AND OTHER VEGETABLES.
WARNING
THE POWER MUST BE TURNED OFF AND DISCONNECTED AT ALL TIMES WHEN PERFORMING
MAINTENANCE OR REPAIR FUNCTIONS.
MAINTENANCE – Cleaning the Condenser Coil
The condenser coil is located behind the filter panel and is accessed through
the front of the unit (See Figure 5). Filter can be cleaned by rinsing with
water. Allow to dry completely before reinstalling. The condenser coil
requires regular cleaning and is recommended every 60 days. However, in some
instances you may find that there is a large amount of debris, dust or grease
that has accumulated prior to the 60 day time frame. In these cases the
condenser coil should be cleaned every 30 days.
If the build up on the coil consists of only light dust and debris the
condenser coil can be cleaned with a simple brush, heavier dust build up may
require a vacuum or even compressed air to blow through the condensor coil.
If heavy grease is present degreasing agents are available for refrigeration
use and specifically for the condenser coils. The condenser coil may require a
spray with the degreasing agent and then blown through with compressed air.
Failure to maintain a clean condenser coil can initially cause high
temperatures and excessive run times. Continuous operation with dirty or
clogged condenser coils can result in compressor failures. Neglecting the
condenser coil cleaning procedures will void any warranties associated with
the compressor or cost to replace the compressor.
CAUTION
NEVER USE A HIGH-PRESSURE WATER WASH FOR THIS CLEANING PROCEDURE AS WATER CAN
DAMAGE ELECTRICAL COMPONENTS LOCATED NEAR OR AT THE CONDENSER COIL.
Indicates risk of fire or explosion. Flammable refrigerant used which, if not
avoided, could result in death or serious injury. 
MAINTENANCE – Door Gasket Care
Gaskets require regular cleaning to prevent mold and mildew build up and also
to keep the elasticity of the gasket. Gasket cleaning can be done with the use
of warm soapy water. Avoid full strength cleaning products on gaskets as this
can cause them to become brittle and prevent proper seals. Also, never use
sharp tools or knives to scrape or clean the gasket which could possibly tear
the gasket and rip the bellows.
Gaskets can easily be replaced and do not require the use of tools or
authorized service persons. The gaskets are “Dart” style and can be pulled out
of the grove in the door and new gaskets can be “pressed” back into place.
MAINTENANCE – Drain
Each unit has a copper drain tube located inside the unit which removes
condensation from the evaporator coil and deposits it onto a drain pan where
it can evaporate (See Fig. 6). If you notice excessive water accumulation on
the inside of the unit be sure that the drain tube is connected from the
evaporator housing to the condensate evaporator
drain pan. If water is collecting underneath the unit you may want to check
the condensate evaporator drain tube to be sure it is still located above the
drain pan. The leveling of the unit is also important as the units are
designed to drain properly when on a level surface, if your floor is not level
this can also cause drain problems. Be sure the drain pan is kept free of
dirt, dust and other debris as excessive amounts will cause water to back up
and overflow from the drain pan.
MAINTENANCE – Drain Pan Access
The drain pan and drain tube can be accessed from the rear of the unit. Pull
the unit away from wall to expose the opening in the rear of the cabinet. The
drain pan is located under the refrigeration system unit (see fig. 6)
Indicates risk of fire or explosion. Flammable refrigerant used which, if not
avoided, could result in death or serious injury. 
Duke Manufacturing Co.
2305 N. Broadway
St. Louis, MO 63102
Phone: 314-231-1130
Toll Free: 1-800-735-3853
Fax: 314-231-5074
www.dukemfg.com