Middleby 20036SB Installation, Operation And Maintenance Manual

Refrigerated base – self-contained

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Installation, Operation &
Maintenance Manual
Refrigerated Base – Self-Contained
20036SB
20048SB
20060SB
20072SB
1100 Old Honeycutt Road, Fuquay-Varina, NC 27526
919-552-9161 • 800-348-2558 • 919-552-9798 (fax) • 800-238-8444 (after hours)
M
ODELS
20084SB
20096SB
20108SB
20120SB
Printed in USA 12/02

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Summary of Contents for Middleby 20036SB

  • Page 1 Installation, Operation & Maintenance Manual Refrigerated Base – Self-Contained 20036SB 20048SB 20060SB 20072SB 1100 Old Honeycutt Road, Fuquay-Varina, NC 27526 919-552-9161 • 800-348-2558 • 919-552-9798 (fax) • 800-238-8444 (after hours) ODELS 20084SB 20096SB 20108SB 20120SB Printed in USA 12/02...
  • Page 2: Table Of Contents

    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...
  • Page 3: Safety

    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"...
  • Page 4: Operation

    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...
  • Page 5: Start-Up Procedure

    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.
  • Page 6 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.
  • Page 7: Functional Description

    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.
  • Page 8 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.
  • Page 9 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.
  • Page 10: Troubleshooting

    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...
  • Page 11: Corrective Maintenance

    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.
  • Page 12 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.
  • Page 13: Charging The Refrigeration System

    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.
  • Page 14: Parts List

    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.
  • Page 15 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...
  • Page 16 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...
  • Page 17 Item Middleby# Drawer Cartridge 31" Gasket GSB64MV Recessed Pulls HXHL08 Drawer Rollers HXDW02 Heater Wire L1HR90 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...
  • Page 18 Item Middleby# Drawer Cartridge Gasket GSB62MV Recessed Pulls HXHL08 Drawer Rollers HXDW02 Heater Wire L1HR82 Leg nut CNNP01MS Item Middleby# Evaporator Coil Assy. RWE450 Evaporator Motor RWEM03 Evaporator Fan RWE5101B Expansion Valve RWEV39 Thermostat RWTT08 Condensing Unit RUT390 Compressor RUT391 Condenser RWCD14 Condenser Fan Blade...
  • Page 19 Item Middleby# Drawer Cartridge 31" Gasket GSB64MV Recessed Pulls HXHL08 Drawer Rollers HXDW02 Heater Wire L1HR90 Leg nut CNNP01MS Item Middleby# Evaporator Coil Assy. RWE450 Evaporator Motor RWEM03 Evaporator Fan RWE5101B Expansion Valve RWEV39 Thermostat RWTT08 Condensing Unit RUT390 Compressor RUT391 Condenser RWCD14...
  • Page 20 Item Middleby# Drawer Cartridge Drawer Cartridge Gasket GSB64MV Gasket GSB62MV Recessed Pulls HXHL08 Drawer Rollers HXDW02 Heater Wire L1HR90 Heater Wire L1HR82 Leg nut CNNP01MS Item Middleby# Evaporator Coil Assy. RWE450 Evaporator Motor RWEM03 Evaporator Fan RWE5101B Expansion Valve RWEV39 Thermostat RWTT08 Condensing Unit...
  • Page 21 Item Middleby# Drawer Cartridge 26" Gasket GSB62MV Recessed Pulls HXHL08 Drawer Rollers HXDW01 Heater Wire L1HR82 Leg nut CNNP01MS Item Middleby# Evaporator Coil Assy. RWE450 Evaporator Motor RWEV03 Evaporator Fan RWE5101B Expansion Valve RWEV39 Thermostat RWTT08 Condensing Unit RUT520 Compressor RUT511 Condenser RWCD37...
  • Page 22 Item Middleby# Drawer Cartridge Drawer Cartridge Gasket GSB60MV Gasket GSB62MV Recessed Pulls HXHL08 Drawer Rollers HXDW01 Heater Wire L1HR64 Heater Wire L1HR82 Leg nut CNNP01MS Item Middleby# Evaporator Coil Assy. RWE450 Evaporator Motor RWEM03 Evaporator Fan RWE5101B Expansion Valve RWEV39 Thermostat RWTT08 Condensing Unit...
  • Page 23: Installation

    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.
  • Page 24: Electrical And Mechanical

    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.
  • Page 25 ELECTRICAL AND MECHANICAL Figure 9.1 - Electrical Schematic Refrigerated Base-Self-Contained © 2002 Printed in USA 12/02...
  • Page 26 ELECTRICAL AND MECHANICAL Figure 9.2 - Refrigeration Piping Schematic Refrigerated Base-Self-Contained © 2002 Printed in USA 12/02...
  • Page 27: Limited Warranty

    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.
  • Page 28 NOTES Refrigerated Base-Self-Contained © 2002 Printed in USA 12/02...

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20060sb20048sb20072sb20084sb20096sb20108sb ... Show all

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