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Service Manual for Refrigerated Back Bar Model RUF 48

4

SPECIFICATIONS

MODEL  DESCRIPTION 

VOLTAGE 

AMPS  Ph.

RUF 48  48” Refrigerated  120 VAC (60 Hz) 

6.4 

1

 

Back Bar 

220 VAC (50 Hz) 

3.2 

1

MODEL  DESCRIPTION  hEIGhT  WIDTh 

LENGTh

RUF 48  48” Refrigerated  36.00 In.  29.50 In.  48.00 In.

 

 

Back Bar

 

INSTALLATION

Location

The unit represented in this manual is intended 

for indoor use only. Be sure the chosen location 

has a floor or counter strong enough to support 

the  total  weight  of  the  unit.  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.

The outline dimensional  drawing for the unit is 

shown below in Figures 1.

Figure 1 

48” Refrigerated Back Bar (RUF 48)

Inside Unit

Provide adequate space along the front, back and 

sides taking care to not block airflow to the fans.

Outside Unit

Be  sure  that  the  unit  has  access  to  ample  air; 

avoid hot corners and locations near stoves 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 points. 

Insure that the unit does not “rock” when pressure 

is applied to the top corners.

Electrical Connection

The RUF 48 is available as a 120VAC, 60 Hz or 

as  a  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  RE-

PAIR  FUNCTIONS.

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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