Duke RUF 48 Service Manual Download

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Service Manual for Refrigerated Back Bar Model RUF 48

CONTENTS

SPECIFICATIONS

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INSTALLATION

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Location

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Inside Unit

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Outside Unit

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Leveling

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Stabilizing

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Electrical Connection

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MAINTENANCE

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Stainless Steel Care and Cleaning

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PREVENTIVE MAINTENANCE

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Cleaning the Condenser Coil

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Door Gasket Maintenance

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Drain Maintenance – Base

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PARTS REPLACEMENT

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Thermostat Replacement ............................................................................................................

Evaporator Fan Replacement ......................................................................................................

Refrigeration System Replacement .............................................................................................

Door Replacement and Adjustment .............................................................................................

Door Gasket Replacement ..........................................................................................................

Recharging Refrigeration System ................................................................................................

Tools

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Charging Procedure

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TROUBLEShOOTING

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Summary of Contents for RUF 48

Page 1: ...Duke is a registered trademark of the Duke Manufacturing Company Duke Manufacturing Company 2305 N Broadway St Louis MO 63102 Phone 314 231 1130 Toll Free 1 800 735 3853 Fax 314 231 5074 www dukemfg com P N 219205A Please read this manual completely before attempting to install operate or service this equipment REFRIGERATED BACK BAR MODEL RUF 48 ...

Page 2: ...SOLINE OR OTHER FLAMMABLE VAPORS OR LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE WARNING UNLESS ALL COVER AND ACCESS PANELS ARE IN PLACE AND PROPERLY SE CURED DO NOT OPERATE THIS EQUIPMENT CAUTION Observe the following 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 op...

Page 3: ...CE 5 Stainless Steel Care and Cleaning 5 PREVENTIVE MAINTENANCE 6 Cleaning the Condenser Coil 6 Door Gasket Maintenance 6 Drain Maintenance Base 7 PARTS REPLACEMENT 7 Thermostat Replacement 7 Evaporator Fan Replacement 8 Refrigeration System Replacement 8 Door Replacement and Adjustment 9 Door Gasket Replacement 9 Recharging Refrigeration System 9 Tools 9 Charging Procedure 9 troubleshooting 11 ...

Page 4: ...es and ovens Leveling Be sure that the unit is 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 Stabilizing Use the leg adjustments to insure that the unit is solid to the floor surface at all four contact po...

Page 5: ...d and industrial cleaners and also in hard water and salts If a chloride or alkaline cleaner has been used rinse repeatedly and dry thoroughly Always use only soft cloths or plastic scouring pads For routine cleaning use warm soapy water For stubborn stains use a non abrasive cleanser For heavy grease use a degreaser For best results rub with the grain of the steel Pitting and cracking are early s...

Page 6: ...quires regular cleaning and should be done every 60 days However if large amounts of dust and grease accumulate sooner clean the condenser coil every 30 days For light dust use a soft non wire brush For heavier dust use a vacuum or blow with compressed air For heavy grease use a degreasing agent made specifically for condenser coils on refrigeration units Spray the degreasing agent on the coil and...

Page 7: ... the drain pan free from dirt dust and debris to prevent water from backing up and overflowing from the drain pan onto the floor PARTS REPLACEMENT Thermostat Replacement General The thermostat is located inside the cooling compartment and is accessible through the doors 1 Disconnect unit from power source 2 Remove shelves 3 Remove shelf support 4 Remove sheet metal panel 5 Remove thermostat from b...

Page 8: ...ted in the rear of the unit 1 Disconnect unit from power source 2 Using a refrigeration charging unit evacuate refrigerant from the system according to Duke Manufacturing Service Bulletin Number 26 3 Remove expansion valve from refrigeration assembly 4 Remove evaporator tubing from refrigeration assembly 5 Remove refrigeration assembly mounting hardware 6 Tag and disconnect wiring at junction box ...

Page 9: ...perly sealed condition strictly adhere to the following approved procedure Tools Standard hand and refrigeration tools Refrigerant Type R 134A Refer to data tag for amount Charging Procedure NOTE Priortorefrigerationsystemservice special caremustbetakenduringtheevacuationprocessto removeair moistureandothernon condensables fromthesystem DukeManufacturingrecommends the following triple evacuation m...

Page 10: ...tercompletingrepair evacuatesystemusing thetripleevacuationmethoddescribedinDuke Manufacturing Service Bulletin Number 26 4 After completing proper evacuation method recharge system using proper refrigerant according to information on data plate 5 Continue crimping process hose just below temporary valve and again 2 below crimp 6 With crimp tool in place remove temporary valve 7 Braze shut end of ...

Page 11: ...Thermostat switch is stuck in the closed position Drain hose plugged Drain hose loose or disconnected from drain pan REMEDY Plug unit in Set thermostat to a higher number for a colder temperature Replace thermostat Adjust doors Replace gaskets Check and repair or replace motor Check and repair or replace motor Clean coil or filter Find leak repair and recharge Set thermostat to a lower number for ...

Page 12: ...Duke Manufacturing Company 2305 N Broadway St Louis MO 63102 Phone 314 231 1130 Toll Free 1 800 735 3853 Fax 314 231 5074 www dukemfg com P N 219205A ...

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