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Installation and Operation of: 

Refrigerated Counter RUF48 Digital

OPERATION

OPERATION – Location of Controls

The refrigeration control/temperature setting adjustment is located on the back splash.  This is the only user adjust-

able component 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. 

Figure. 3

Refrigeration control / Temperature display

Figure. 4

Use a simple thermometer to set to a specific temperature. 

Allow time for temperature changes before making a final 

temperature check. 

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 sur-

face 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 discolor-

ation. 

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 stain¬-

less 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 be¬gun, clean thoroughly and 

start to apply stain¬less steel cleaners in attempt to restore the passivity of steel.

MAINTENANCE

Summary of Contents for RUF 48

Page 1: ...018 This manual is Copyright 2018 Duke Manufacturing Co All rights reserved Reproduction without written permission is prohibited Duke is a registered trademark of the Duke Manufacturing Co CAUTION Please read this manual completely before attempting to install operate or service this equipment ...

Page 2: ...re Cleaning 6 Cleaning the Condensor Coil 7 Door Gasket Care 8 Drain Maintenance 8 Drain Pan Access 8 IMPORTANT WARNING AND SAFETY INFORMATION WARNING READ THIS MANUAL THOROUGHLY BEFORE OPERATING INSTALLING OR PERFORMING MAINTENANCE ON THE EQUIPMENT FAILURE TO FOLLOW INSTRUCTIONS IN THIS MANUAL CAN CAUSE PROPERTY DAMAGE INJURY OR DEATH DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS OR LIQU...

Page 3: ...ll Do not block the slots in the front kickplate Operate equipment only on the type of electricity indicated on the specification plate Retain this manual for future reference This publication contains information regarding the installation and operation of Duke Refriger ated Counter units The information contained within applies to the models RUF 48 Please read this manual completely before attemp...

Page 4: ...here is concealed damage to the equipment notify the carrier Notification should be made verbally as well as in written form 4 Request an inspection by the shipping com pany of the damaged equipment This should be done within 10 days from receipt of the equipment 5 Check the lower portion of the unit to be sure legs casters are not bent 6 Also view compressor compartment housing and visually inspec...

Page 5: ... 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 Make sure the unit is installed on a flat surface to insure that the unit is solid to the...

Page 6: ...er the steels sur face 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 discolor ation Proper cleaning of stainless steel requires soft cloths or plastic scouring pads CAUTION Never use steel pads wire brushes or scrapers Clea...

Page 7: ...ndenser coil should be cleaned every 30 days Filter Condensing Coil is Located behind unit Figure 5 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 u...

Page 8: ...into place MAINTENANCE Drain Each unit has a drain tube located in the rear the unit which removes condensation from the evaporator coil and deposits it onto a drain pan where it can evaporate If you notice excessive water accumulation on the inside of the unit be sure that the drain tube is connected from the evaporator hous ing to the condensate evaporator drain pan If water is collecting undern...

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