GENERAL INFORMATION This technical manual provides information for the installation, operation, maintenance, and inspection of this unit manufactured by Middleby. A complete parts breakdown is also provided. TECHNICAL SUPPORT For any questions regarding the installation, operation or maintenance of the unit, contact the factory at the following address: Technical Service Department Middleby...
SAFETY PRECAUTIONS NOTICE! Post the emergency telephone number of your gas supplier and instructions to follow if gas odor is detected. Model Drawers Number 18" 26" 20036SB 36" 32" 26" 20048SB 48" 32" 26" 20060SB 60" 32"...
INTRODUCTION This model is a heavy-duty piece of equipment designed for continuous use. It incorporates automatic controls to regulate the cycling of the refrigeration system. CONTROLS AND INDICATORS NAME Low Pressure Switch Suction Valve Discharge Valve Power Control Switch (On/Off) Thermostat Defrost Timer Solenoid Valve...
START-UP PROCEDURE The refrigeration system is completely factory assembled, pre-charged and ready for operation. To energize the system it is only necessary to find the power supply cord and connect it to a proper electrical source. Once the supply cord Table 2.2 - Start-up Procedure (Refrigerated Storage) Operation 1.
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PREPARATION FOR AN EXTENDED PERIOD OF INACTIVITY This unit is designed for continued use at automatically cycled intervals. However, in the event of an extended shut down, both the mechanical refrigeration system and the food storage compartment system must be serviced. Table 2.4 - Shut Down Procedures for an Extended Period Operation 1.
SYSTEM DESCRIPTION This unit is a self contained, automatically controlled, continuous duty, perishable food storage system. It is designed with the intent and purpose of storing food items. The operating temperature is automatically monitored by controls that are factory set to maintain a predetermined adequate condition.
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Monthly Inspection 1. Check the evaporator drain line at both the inlet and outlet ends to make certain that there are no obstructions. It is not recommended to use any chemicals in clearing a clogged drain. The preferred method of unstopping an obstructed drain is to use compressed air.
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5. To recalibrate the thermometer, remove it from the cabinet. Using a small, flat screwdriver, remove the lens. Prepare an ice water bath and immerse the thermometer bulb at least two inches into the ice bath. WIthin 30 seconds the indicator dial should read 32 degrees Fahrenheit.
INTRODUCTION This chapter provides a systematic check of components in determining a possible cause of failure in the event of various symptoms. It is necessary that the individual performing the troubleshooting tasks be familiar with the function of the equipment as described in the Functional Description section. Table 5.1 - Mechanical and Electrical Troubleshooting Guide SYMPTOM Unit does not operate...
INTRODUCTION This chapter focuses on the instruction needed in the removal and replacement of certain components. It also addresses the repair of components not listed under the scheduled maintenance index covered in the Scheduled Maintenance section. The level of skills required to perform the service or repair will vary.
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21. Check the refrigeration tag on the unit for the number of ounces of refrigerant to place into the system for start-up. Monitor the pressure on both the suction and discharge sides of the manifold gauges. As the temperature in the storage area begins to fall, check the refrigerant flow through the sight glass.
3. Remove the protective wire shroud from around the motor. 4. Disconnect the fan motor leads from the terminal box on the compressor. 5. Remove the mounting screws at the motor base. 6. Using an allen wrench, remove the aluminum fan. 7.
INTRODUCTION This section of the manual contains lists of replaceable parts. Each of the tables contains a list of removable parts associated with an assembly of the cabinet or refrigeration system. No parts identification has been provided for details of permanently assembled items or those that are not suitable for field repair.
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RWPL02 Power Control Switch LWTS01 Power Cord MT-004 Wire Harness LH041 Printed in USA 12/02 Table 7.2 - Parts List Parts List - Cabinet 20036SB Mfg# DSB18C 6449 P73-2000 7319000201 64" 3/4" large hex nut Parts List - Refrigeration 20036SB...
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Item Middleby# Drawer Cartridge Gasket GSB62MV Recessed Pulls HXHL08 Drawer Rollers HXDW02 Heater Wire L1HR82 Leg nut CNNP01MS Item Middleby# Evaporator Coil Assy. RWE430 Evaporator Motor RWEM03 Evaporator Fan RWE5101B Expansion Valve RWEV39 Thermostat RWTT08 Condensing Unit RUT220 Compressor RUT221 Condenser RWCD17 Condenser Fan Blade...
UNPACKING Note: Before unpacking the unit, note any crate markings and check for damage to crating. Notify the carrier if there should appear to be damage to the unit. The unit is shipped directly from the manufacturing factory securely fastened to a single pallet then protected by an external wrapping.
INTRODUCTION This section of the manual contains drawings and schematics of the electrical and mechanical piping systems. ELECTRICAL ABBREVIATIONS AND TERMINOLOGY • RLA - Rated Load Amperage Rated load amps is a measure of the current drawn by a compressor when operated at compressor manufacturer rating conditions at nominal voltage.
INTRODUCTION Middleby warrants their cabinets and units to consumers only against defects in material or workmanship under normal use and service for a period of one year from the date of shipment. Middleby will repair or replace at their option, any part, assembly, or portion thereof, which, by their examination, is deemed to be defective.
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