Service, Parts, Operation, Installation & General Manual
Contents
1. A MIDDLEBY COMPANY TECHNICAL MANUAL RAPID STEAM COUNTERTOP CONVECTION STEAMER MODEL RS 4E This manual is intended for the use of Southbend Authorized Service Agencies and their associates Service work should be performed only by a qualified technician who is experienced in and knowledgeable with the operation of commercial gas electric steam cooking equipment WARNING Improper installation service or maintenance can cause property damage injury or death 1100 Old Honeycutt Road Fuquay NC 27526 919 552 9161 FAX 919 552 9798 800 348 2558 Middleby Corp Service Hot Line 800 238 8444 RAPID STEAM CONVECTION STEAME Manual Section ST NOTICE Warranty will be void if A Service work is performed by other than a Southbend Authorized Service Agency or B Other than Genuine Southbend replacement parts are installed TABLE OF CONTENTS FOR INSTALLATION AND USERS GUIDE CONSULT OWNER S MANUAL Part 1176560 Safety Precautions 2 Utility Information 3 Service 3 Operating Sequence 4 Component Description 5 Troubleshooting Guide 11 Performance Standard 15 Performance Check 15 Instructions Removal and Replacement 16 Electrical Schematic Drawings 17 Parts List 20 LOCATION OF SERIAL AND IDENTIFICATION PLATES The serial plate with all voltage information is located on the exterior right body side at the upper rear comer There is also a product identification plate loca2. 2 0 Faulty slow fill solenoid 3 0 Low water pressure PAGE 12 4 1 4 2 1 1 1 1 2 1 3 Ckeck Remove Right Side Panel R 2 should activate imme diately when power switch is turned on Door closed If R 2 does not activate check voltage across coil Voltage across coil Relay is bad No voltage across coil well T stat is bad Check Slow Fill Float for free movement on stem and inside baffle tube Remove right side panel Shut power off Disconnect Slow Fill Float leads red Check continuity of switch as you raise and lower float Higher and to the left INSIDE protective tube baffle Do this test while the float is still HOT from operation of unit Sometimes a float switch will test OK COLD If float switch tests good check voltage across slow fill solenoid coil TB 5 and float switch No voltage check R 3 related functions as it can affect slow fill circuit Voltage present no filling action solenoid is bad or plugged Replace Check for minimum 30 p s i Access RT RT CAV RT RT Rapid Steam Convection Steamer 10 94 Symptom De Lime light comes on Unit still runs ok De Lime light comes on Unit has shut down Elements not on Unit operates normally heats up OK but Ready light does not come on Unit operates but is slow Unit will not operate in idle mode Cause Elements are coated with
3. Unit will not operate in Manual Mode or Timing Mode Unit operates in Timing mode but timer does not count down Unit Fast Fills continuous contactor never energizes elements Unit operates normally Then shuts off No lights illuminated on panel PAGE 14 Cause Timer Switch contacts Timer Motor faulty Low Water float stuck down Faulty Low Water Float switch contacts never Close Or Faulty R 1 Relay Supply breaker tripped Loss of water supply Check Access 1 1 Check for operating voltage RT 208 240 between TB 4 and 6 1 1 Check for voltage across CP Timer Motor leads when dial is set to a time anywhere in the 0 to 55 scale 1 1 Check that Float lower and CAV to the right moves freely up and down on stem 2 1 Remove Right side panel RT Check to see that R 1 energizes when water level raises float 2 2 If R 1 does NOT energize RT check voltage across coll No voltage Float switch is bad Voltage present no action R 1 relay is bad Replace 1 1 If Breaker is tripped leave power off remove control panel and Right and Left side panels and check for loose wires or connections or pinched damaged wires 2 Check that water supply has not been shut off or that facility water supply is still OK Rapid Steam Convection Steamer 10 94 PERFORMANCE STANDARD The RS 4E should come up to operating temperature and the Ready Li
4. door the left top comer that will supply model and serial number Replacement parts may be ordered either through a Southbend Authorized Parts Distributor or a Southbend Authorized Service Agency When ordering parts please supply the Model Number Serial Number Part Number Description plus Finish Type of Electrical Characteristics as applicable For parts not listed consult a Southbend Authorized Parts Distributor or Southbend Authorized Service Agency If necessary please consult Southbend Parts Department for assistance FOR MODEL NUMBER RS 4E Rapid Steam REPLACEMENT PARTS INDEX see pages Legs and Outer Body Parts 21 Door Panel Assembly 22 Steamer Cavity Interior Parts 23 Heating Element and Thermostat 24 Terminal Block Rear of Steamer 24 Water Solenoid Assembly 25 Internal Control Components 26 Control Panel Components 28 MISCELLANEOUS PARTS NOT SHOWN IN DRAWINGS SteamMaster Descaler Master Pack Contains 8 of the 4450020 Rapid Steam PAGE 20 Convection Steamer 10 94 DESCRIPTION Door Assembly complete Dr Tay Shek Side Panel Bronze Bushing for Door Hinge 9A Nylon Washer Fits Between Door and Hinge 10 241 2 Stainless Steel Hex Screw Hold door striker on hate Location Not shown on drawing If door is hinged on right hand side of steamer the hinges would switch position top to bottom PAGE21 DOOR PANEL ASSEMBLY Insulation Block Foam PM 141 Plug Button 1 4 Nylon
5. 1 1176399 Light Assembly Amber Light only 6600030 2 1176417 Light Flashing G Amber Light only 117 6413 3 1176416 Timer 208 240V 60Hz 60 Minute E SE 2905 NE wasi 1174926 Poly Panel 1176394 Control Panel 60 Hz 1176437 Control Panel 50 HZ Not shown on drawing 9 Complete assembly RAPID STEAM COUNTERTOP CONVECTION STEAMER FAREN HAY ETE SOUTHBEND REGISTERED TO 150 9002 ERE CERTIFICATE NO A2062 Certification No FM25780 Southbend Registered to ISO 9001 V sputhbend 1100 Old Honeycutt Road MIDDLEBY COMPANY Fuquay NC 27526 919 552 9161 Litho U S A FAX 919 552 9798 PART NUMBER 4460002 5 95 800 348 2558 First in Cooking Built to Last southbend A Middleby Company R2 Control Parts Interior and Lower Front View PE 193 Low Water Float 1178007 208V Middle Element 1178008 220V Middle Element 1178009 240V Middle Element 1178010 380V Middle Element 1178011 415V Middle Element 1178012 480V Middle Element 3 1174561 208V Outer Elements 1174616 220V Outer Elements 1174562 240V Outer Elements 1174563 380V Outer Elements 1174617 415V Outer Elements 1174564 480V Outer Elements 4 1178677 Valve Rod Weld Assembly 5 1177440 Well Thermostat 1177996 High Limit 7 1178019 High Limit Bracket N S 1176315 Well Thermostat Bracket Not Shown N S 1166801 Brass Elbow to Drain Valve Not Shown N S 1176667 Drain Valve Not Shown N S 1166170 Brass Connector from Drain Valv
6. 1 94 AMPERAGE WIRING DIAGRAM P N Zjsovthbend SE eae PAGE 17 va e NEUT GND 380V MAIN ELEMENTS HII 7 MED ken TERMINAL BLOCK CONTACTOR GJORAIN SOLENOID COIL TIMED OUT R3 COIL 00000 DOOR SWITCH n TER R1 COIL LOW WA 00000 FLOA Mo Q3 BLACK LEADS R4 COL AAAA TIMED OUT SLOW FILL SOLENOID RED LEADS LIMIT TACT SWITCH B a CONTACTOR COIL NORM CLOSED COND SOLENOID FAST FILL SOLENOID LIMIT SWITCH A NORM OPEN 36 GO TIMED OUT LIGHT gt LEGEND NC 31 SCHEMATIC DIAGRAM LATCH RELAY HE PLUG CONNECTOR VOLTAGE C TERMINAL BLOCK CONNECTIONS PHASE wnt NUMBERS JAM 3 94 AMPERAGE cho al EE ES P N 2 STEAMER MDDEL RS 4E SOV Em 380 220V 50HZ 415 220v 50Hz 11 6455 Rapid Steam PAGE 18 Convection Steamer 10 94 Li 12 15 BLOCK Hn 480V e e Ps IDLE ELEMENT LEGEND mn D SCHEMATIC DIAGRAM CDR PLUG CONNECTOR VOLTAGE C TERMINAL BLOCK CONNECTIONS PHASE 113 P WIRE NUMBERS AMPERAGE WIRING DIAGRAM P N ZA eene STEAMER MODEL asr PAGE 19 PA RTS AN Genuine Parts e SE Protect YOU All Ways 4 NOTICE INSTALLATION OF OTHER THAN GENUINE SOUTHBEND PARTS WILL VOID THE WARRANTY OF THIS EQUIPMENT The serial plate is located on the right upper rear comer There is also an Identification Plate mounted to the front of the
7. deposits buildup or limit T stat out of calibration Elements severely coated with deposits buildup T stat loose not sensing well temp T stat opens to de energize R 2 no contact then powers ready light Loose or broken wires on T stat or R 2 relay Light burned out Incorrect low voltage Faulty contactor Timer switch contacts failure Check Access 1 1 Check elements CAV Clean elements limit thermostat bulb damaged or T stat needs calibration If T stat bulb on element is not crushed or damaged see limit thermostat cali bration procedure Coated covered elements clean elements following Southbend recommended cleaning procedure 1 1 Clean elements following CAV Southbend recommended cleaning procedure Repeat if necessary until elements well and floats are entirely clean 1 1 Check that bracket securing RT T stat is tight and that CP bottom of T stat is flat against side of well 2 Check wires that go from RT terminal block to T stat and CP R 2 relay 3 Check voltage across Ready CP Light after unit is heated to operating temperature 5 minutes 1 1 Check voltage at rear RR terminal block to see if it matches that on unit serial plate 2 1 Check that each power input RR lead has amperage draw comparable to rating on serial plate 1 1 Check for 208 240 voltage RT between terminal strip sections 3 and 6 PAGE 13 Symptom
8. extremely bad and element temperature rises significantly this switch B will now trip It will also trip in the event the Low Water Float should happen to stick Up and a Dry Fire condition takes place PAGE 10 Rapid Steam Convention Steamer 10 94 TROUBLESHOOTING GUIDE SERVIGE lt The following Troubleshooting Guide is designed to aid in troubleshooting components on the RS 4E RapidSteam Steamer Before starting service on the RS 4E verify the steamer has the proper power supply water supply and drain connections The access column below tells you the access area that allows the easiest access to components The abbreviations used are as follows RR Rear of steamer RT Right access panel CAV Interior cavity LT Left access panel CP Control Panel Symptom Cause Power Switch is turned 1 Breaker tripped or no power into unit on but unit does not operate 2 Defective Power Switch 3 Loose wire connection Unit is on but does not I Faulty or mis adjusted Door Switch or fill on startup faulty R 3 Relay R 3 not being energized 2 Faulty Fast Fill solenoid R 3 is being energized 3 Faulty Drain solenoid Well will not hold water Check Access 1 1 Check to see that Breaker is on 1 2 Check for proper supply RR voltage at terminal block rear of unit Voltage should match rated voltage on unit Serial Plate 2 1 Verify voltage into and out of CP switch in On position Verify voltage between
9. 1172951 1178113 1178644 1179932 1177082 1178654 1178655 1178379 1177080 1178270 1178340 1178533 1178430 1174302 1178341 1176388 1178439 1178261 1178376 1178388 1178425 1178444 1176878 1180460 1178324 1178652 1178394 1178650 1178395 SEAL SHAFT SHIELD HEAT TRANSFER SHIM CAST STRIKER SIDE PANEL SIMPLE STEAM SLEEVE RUBBER 1 1 4 1D X SLIDE RACK 3 PAN STEAMER SLIDE RACK 5 POS 3 PAN SPRING SPRING DOOR HANDLE STAND W DRAIN EZ STAND EZ STEAM TRAP STRIKER CAST SWITCH ACTUATOR ROD SWITCH FLOAT SWITCH POWER S A SWITCH DOOR S A SIMPLE ST THERMOSTAT ELEMENT 2001 TIMER MECHANICAL TRANSFORMER 480 TO 240 7 TROUGH SCREEN ASM TUBE amp BOX TOP W A TUBE VALVE ACTUATOR VALVE LEVER WELD ASM VALVE 1 2 DRAIN MODIFIE VALVE 3 8 BALL NSF FDA VENT PIPE 1 NIPPLE WASHER SEALING 10 WATER TROUGH W A WIRE HARNESS SUPPL 480V WIRE HARNESS W DISC TSTAT WIRING DIAGNOSTIC 480V WIRING DIAGNOSTIC 208 22 EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA h ND ND n PART NUMBER DESCRIPTION PH 422 1332076 1178266 1178651 1178534 1178525 1178411 1177770 1178494 1178276 1181019 1178256 1161525 1181032 1181042 1178311 1181038 1178442 1178524 1178552 1178265 1181000 1181009 1178657 1179962
10. 1181015 1178522 1178410 1178670 1178332 1178422 23 1181020 1178317 1178545 1181024 1181026 1178391 1181010 1178325 1180953 1181041 1178560 1178561 1178565 1178562 1178554 1178555 1178556 BELLEVILLE WASHER 1 4 ID BLANK DOOR HINGE BOX WELD ASM REAR BRACKET COMPONENT SIMPLE BRACKET ON OFF SWITCH BRACKET VENT TUBE EZ 3 BRACKET WIRE HANGER BUSHING VALVE LEVER MOUN BUSSMAN FUSE BLOCK 60A 48 CAM ACTUATOR STEAMER CAVITY WELD ASM EZ 5 CLAMP HEATER CONTACTOR 2 POLE 240V 30 CONTACTOR DP 60 FLA CONTROL PANEL S A EZ 5 CONTROL PANEL W A EZ3 CONTROLLER EZ 5 COVER ASM POOL COVER W A DRAIN BOX EZ COVER DRAIN EZ 3 COVER BOTTOM COVER REAR STEAMER EZ 5 COVER EXTERIOR EZ 5 COVER EXTERIOR STACKED COVER REMOVABLE BUSS DOOR ASSEMBLY COMPLETE EZ DRAIN BOX WELD ASM EZ 3 DRAIN PAN WELD ASM ELBOW 90 DEG STR 1 2 FITTING 3 4 HOSE ID X 1 2 FITTING FLOAT SWITCH FLANGE BUSHING 1 4ID BRO FRONT FRAME WELD ASM EZ FRONT TOP CROSSMEMBER W A FUSE 10AMP FUSE 35 AMP FUSE 60 AMP FUSEBLOCK CONTROLS GASKET DOOR GASKET CONTROL PANEL EZ 3 HANGER HOSE COMBI EZ STEA HARNESS WIRE EZ 5 HEAT ELEMENT DUAL COIL 20 HEAT ELEMENT DUAL COIL 22 HEAT ELEMENT DUAL COIL 48 HEAT ELEMENT 240V DUAL CO HEATING ELEMENT 208V EZ HEATING ELEMENT 220V EZ HEATING ELEMENT 240V UNITS EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA
11. 250 DIA SS CAST L PIN COTTER SS 1 8 X 1 1 4 PLUG BUTTON 1 4 NYLON POLYPANEL W TIMER POT FILLER RACK MOUNTING STUDS 1 4 2 RETAINER CAST LATCH RETAINING RING RING RETAINING S S S A BUZZER 220V SEAL SHAFT SHAFT VALVE LEVER SHIELD HEAT TRANSFER SHIM CAST STRIKER SIDE RACK W A SLEEVE RUBBER 1 1 4 ID X EA EA FT EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA N A PO po N Di Ny ND S WO ND D 1179932 1177082 1178654 1178655 1178379 1177080 1178270 1178340 1178535 1178430 1181013 1181012 1178341 1176388 1178439 1178261 1178376 1178388 1178425 1178444 1178683 1178324 1181043 1181040 1181037 SPRING SPRING DOOR HANDLE STAND W DRAIN EZ STAND EZ STEAM TRAP STRIKER CAST SWITCH ACTUATOR ROD SWITCH FLOAT SWITCH POWER S A SWITCH DOOR S A SIMPLE ST THERMOSTAT ASSEMBLY F F THERMOSTAT ASSEMBLY M M TIMER MECHANICAL TRANSFORMER 480 TO 240 7 TROUGH SCREEN ASM TUBE amp BOX TOP W A TUBE VALVE ACTUATOR VALVE LEVER WELD ASM VALVE 1 2 DRAIN MODIFIE VALVE 3 8 BALL NSF FDA VENT PIPE 1 X 24 375 WATER TROUGH W A WIRE HARNESS SUPPL 480V WIRE DIAGNOSTIC EZ 5 480V WIRING DIAGNOSTIC 208 22 EA EA EA EA EA
12. AMP FUSE 30 AMP FUSE 50 AMP CLASS G FUSEBLOCK CONTROLS GASKET DOOR GASKET SIDE PANEL GASKET CONTROL PANEL EZ 3 HANGER HOSE COMBI EZ STEA HINGE LT DOOR HINGE RT DOOR HOSE 1 1 2 ID SILCONE HOSE 3 4 ID SILCONE INSULATION BACK PANEL INSULATION BOTTOM INSULATION FRONT CAVITY KIT DRAIN BOXES STACK EZ KNOB LATCH ARM CAST LATCH ASSEMBLY STEAMERS LATCH COVER PLATE CAST LEG 4 S S EZ 3 FRONT LEG 4 S S EZ 3 REAR LIGHT INDICATING AMBER LIGHT INDICATING RED LUG GROUNDING MAIN POWER LEADS MANUAL EZ 3 STEAMER METAL OXIDE VARISTOR NIPPLE CLOSE 1 2 NPT NYLON INSERT NUT NYLON WASHER O RING VALVE SHAFT PAN Z BRACKET LEFT PAN Z BRACKET RIGHT PANEL ASM DOOR EZ 3 PANEL ASM INNER DOOR PANEL GASKET RETAINER EZ PIN 250 DIA SS CAST L PIPE ALUM 1 SCHEDULE 40 PLUG BUTTON 1 4 NYLON POLYPANEL W TIMER POT FILLER POTENTIOMETER TDR RACK MOUNTING STUDS 1 4 2 RELAY TIME DELAY 120V RETAINER CAST LATCH RETAINING RING RING RETAINING S S ROLL PIN S A BUZZER 220V EA EA EA EA EA EA EA EA EA EA FT FT EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA FT EA EA EA EA EA EA EA EA EA EA EA PN NH W n2 N A N A D d mm ND 1178347 1178373 1177318 1178234
13. E 8 TIMER The Timer is essentially a motorized time switch but also has a Manual and Idle position It is the function selector allowing the user to set a Timed run leave unit in Idle or leave unit in Manual running full power continuously In Idle the unit is kept up to temperature ready for full power use while conserving both water and electricity DOOR SWITCH The Door Switch is a normally open magnetic activated switch energizing the R 3 relay coil when the door is closed Magnet is mounted inside door at bottom near center Door Switch is located immediately behind front frame under cavity mounted on panel Rapid Steam Convection Steamer 10 94 R 1RELAY The R 1 Relay is a double pole double throw relay energized by the low water float when the water level in the well rises above the elements BELOW this trip point the fast fill solenoid is energized door must be closed ABOVE this trip point TWO SEPARATE actions are initiated 1 Power now travels to term block 2 on to limit thermostat then onward to contactor coil and condensate solenoid simultaneously 2 Power now travels to the idle element which will now run continuously and the slow fill float which will then cycle slow fill solenoid off and on to maintain water level Once R 1 relay is activated on startup it remains energized continuously as long as unit is running R 2RELAY The R 2 Relay is the well thermostat controlled relay It is id
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15. EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA QTY 16 N po NN PPO WN NO HH HSH HSH P 1178559 1178685 1178386 1181021 1178371 1181018 1181022 1178418 4440480 1170337 1175168 1177079 1177317 1177078 1181039 1178485 1178486 1179930 1178329 1178330 11 5547 1178374 1181046 1178367 1178643 1146402 1177865 PH 292 1178342 1178344 1178345 1181017 1181016 1181001 1177081 1178393 PM 141 1178319 1178684 1333041 1177086 1178338 6600402 1175712 1178347 1178275 1178373 1177318 1181045 1172951 HEATING ELEMENT 480V EZ HOSE OVERFLOW 28 HOSE 3 4 ID SILCONE INSULATION BACK PANEL E INSULATION BOTTOM INSULATION DOOR EZ 5 INSULATION CAVITY EZ 5 INSULATION ERONT CAVITY KIT DRAIN BOXES STACK EZ KNOB KNURLED INSERT 3 8 LATCH ARM CAST LATCH ASSEMBLY STEAMERS LATCH COVER PLATE CAST LEAD ELEMENT EZ 5 LEG 4 S S EZ 3 FRONT LEG 4 S S EZ 3 REAR LEVER VALVE LIGHT INDICATING AMBER LIGHT INDICATING RED LUG GROUNDING MAIN POWER LEADS MANUAL EZ 5 STEAMER METAL OXIDE VARISTOR NIPPLE CLOSE 1 2 NPT NUT 1 4 20 HEX HEAD NUT HEX 5 8 18 BRASS NYLON WASHER O RING VALVE SHAFT PAN Z BRACKET LEFT PAN Z BRACKET RIGHT PANEL ASM DOOR EZ 5 PANEL ASM INNER DOOR EZ PANEL GASKET RETAINER EZ PIN
16. LIMT KIT 4440462 ALSO MIDDLE 1177361 1177361 1177361 1177362 1177362 1177361 208 V 208 V 220V 220V 240V 240V 380V 380V 415V 415V 480V 480V 208V 220V 240V 380V 415V 480V ELEMENT ELEMENT ELEMENT ELEMENT ELEMENT ELEMENT ELEMENT ELEMENT ELEMENT ELEMENT ELEMENT ELEMENT TERMINAL TERMINAL TERMINAL TERMINAL TERMINAL TERMINAL 2 IN UNIT 2 IN UNIT 2 IN UNIT 2 IN UNIT 2 IN UNIT 2 IN UNIT BLOCK BLOCK BLOCK BLOCK BLOCK BLOCK PART NUMBER PH 422 1332076 1178266 1178651 1178534 1178525 1178411 1177770 1178389 1178494 1175708 1178276 1178370 1178299 1178256 1176561 1161525 1173448 1178397 1178311 1178442 1178524 1178552 1178265 1178527 1178255 1179962 1176797 1178167 1178171 1178522 1178410 1333045 1178353 1178359 1178526 1178354 1178360 1178355 1178361 1178358 1178364 1178332 1178423 1178422 PI M23 1178318 1178317 1178545 DESCRIPTION BELLEVILLE WASHER 1 4 ID BLANK DOOR HINGE BOX WELD ASM REAR BRACKET COMPONENT SIMPLE BRACKET ON OFF SWITCH BRACKET VENT TUBE EZ 3 BRACKET WIRE HANGER BUSHING VALVE LEVER MOUN BUSSMAN FUSE BLOCK 30A BUSSMAN FUSE BLOCK 60A 48 BUZZER ADJUSTABLE 220V CAM ACTUATOR STEAMER CAVITY INSULATION CAVITY WELD ASM EZ 3 CLAMP HEATER CLEANING INSTRUCTIONS RS CONTACTOR 2 POLE 240V 30 CONTACTOR 63A 240V COIL CONTROL PANEL S A EZ 3 CONTROL PANEL W A EZ 3 COVER ASM POOL COVER W A DRAIN BOX EZ CO
17. Rapid Steam PAGE 22 Convection Steamer 10 94 STEAMER CAVITY INTERIOR PARTS Well Cover Deflector Float Switch Water RII Red Leads Normally Open Float Switch Low Water Black Leads Normally Closed Float Baffle Tube Slow Fill Chain Steamer Three Links PAGE 23 7 HEATING ELEMENT amp THERMOSTAT DESCRIPTION 208V Element Assembly 1176486 220V Element Assembly 1176487 240V Element Assembly 176488 380V Element Assembly 1176489 415 Element Assembly 1176490 480V element Assembly Hold Down Bracket T Stat 1176589 Brass Plug TERMINAL BLOCK Rear of Steamer DESCRIPTION Terminal Block 1 Section Assembly 1174700 Water Inlet Plate Weld Assembly In Line Y Strainer Brass Elbow 1 4 x 1 8 NPT Condenser Tube Spray Nozzle 1 8 NPT 34 GPM Ground Lug Rapid Steam PAGE 24 Convection Steamer 10 94 WATER SOLENOID ASSEMBLY 3 8 CC 1 8 NPT Female 1 8 NPT Male Tee 1 8 NPT Male Female 1 4CC 1 8 NPT Male Elbow 1 8 NPT Coupling Solenoid Water Valve 240 VAC 1176386 RS 4E Solenoid Assembly PAGE 25 Rapid Steam Convection Steamer 10 94 PAGE 26 INTERNAL CONTROL COMPONENTS Buzzer 240V Used on units before 95B93610 Buzzer 220V Used on units after 95B93609 Relay Clear 10Amp 240V Transformer 480V to 240V 75VA 1176509 Fuse 3 4A 600V Not shown on diagram PAGE 27 CONTROL PANEL COMPONENTS ITEM PART NO DESCRIPTION
18. VER W A DRAIN EZ 3 COVER BOTTOM COVER REAR STEAMER EZ 3 COVER EXTERIOR SIMPLE STE COVER REMOVABLE BUSS DESCALER 3 504 PKG 100G DOOR ASSEMBLY COMPLETE EZ DOOR INSUL BLOCK DRAIN BOX WELD ASM EZ 3 DRAIN PAN WELD ASM DRAIN VENT TUBE AIR VEN DUAL HEATING ELEMENT DUAL HEATING ELEMENT ELBOW 90 DEG 1 NPT FEM ELEMENT BLOCK 220V CENTE ELEMENT BLOCK 220V OUTER ELEMENT BLOCK 240V CENTE ELEMENT BLOCK 240V OUTER ELEMENT BLOCK 480V CENTE ELEMENT BLOCK 480V OUTER FITTING 3 4 HOSE ID X 1 2 FITTING 3 4 KYNAR HOSE E FITTING FLOAT SWITCH FLANGE BUSHING 1 4ID BRO FRONT FRAME WELD ASM FRONT TOP CROSSMEMBER W A FUSE 10AMP UNITS EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA QTY 16 N PO NNN Nea NY NNa a NM NM HH NN HH HH HSH P HS ND RD 1178392 1178390 1178495 1178391 1178096 1178227 1178325 1180953 1332048 1 1332048 2 1178483 1178386 1178369 1178371 1178418 4440478 1170337 1177079 1177317 1177078 1178485 1178486 1178329 1178330 1175547 1178374 1178387 1178367 1178643 1178351 PH 292 1178342 1178344 1178345 1178169 1178105 1178106 1177081 1172949 PM 141 1178319 1178684 1178352 1333041 1178337 1177086 1178338 6600402 1178343 1175712 FUSE 2 5
19. condenser spray solenoid The contactor when energized sends power to the elements and the elements begin to heat the water All functions to this point are automatic when the unit is started up as long as the power switch is turned on and the door Is closed The temperature in the cavity well will continue to rise until it is up to boiling at which time a thermostat senses the well temperature and opens up This de energizes the R 2 relay and turns the ready light on The control of the steamer is now governed by the timer The timer has three positions The first is Manual in which the unit runs on full power continuously The second position is the Timed position In this position a cook time is dialed in and after the timer counts down to zero the timed out light will flash and the buzzer will sound and the unit will go into idle mode automatically The third position is the Idle position In this position the unit will remain just below boiling temperature and ready for use The 500 watt heating element is energized The unit can be brought up to full power by turning timer knob to manual or setting a time Rapid Steam Convection Steamer 10 94 COMPONENT DESCRIPTIONS The following section lists the main components of the RS 4E Rapid Steam Counter Top Steamer It will also describe these functions in the steamer operation Power Switch The power switch is a double pole single throw switch that serves as the only ON OFF co
20. e to Drain Tube Not Shown N S 1177775 Drain Tube Not Shown N S 1 3195 Brass Connector from Drain Tube to Drain Pipe Not Shown 8 1333041 Rack Mounting Studs 1 4 20 w PH 238 Nuts Not Shown 1100 Old Honeycutt Road Fuquay Varina N C 27526 9312 919 762 1000 Fax 919 552 9798 4 First in Cooking Built to L st 7 dl southbend R2 Control Parts Bottom Interior and Rear View A Middleby Company Terminal Strip Wiring Harness Includes front control panel section Element Leads Assembly of 6 Wires White Water Fill Solenoid 6 1178514 1 Water Supply Tube Condensate Supply Tube Lus 1 eane MM e Pesos t Fow Regular Main Power Leads Black 3 Pole Terminal Block 1100 Old Honeycutt Road Fuquay Varina N C 27526 9312 919 762 1000 Fax 919 552 9798 First in Cooking Built to Last southbend R2 Control Panel Parts Rear View A Middleby Company 4 7 10 SSS Seal shaft 1 Behind Timer Knob E E 13 14 15 16 L 18 E Clip SS 375 Dia Shaft 19 1100 Old Honeycutt Road Fuquay Varina N C 27526 9312 919 762 1000 Fax 919 552 9798 First in Cooking Built to L st southbend R2 Control Panel Parts Front View A Middleby Company NOTE The entire Control Panel Assembly can be ordered as part number 1178507 6 17087 8 1178329 1 Amber Ready Light 110 Old Honeycutt Road Fuquay Vari
21. ed off through 3 when door opens to interrupt functions until door is closed This also de energizes the slow fill contactors and condensory solenoid 6 Common or Neutral side always powered when power switch is On Operating voltage will always be present between Q and 6 PAGE 5 OXON Well Thermostat WELL THERMOSTAT The Well Thermostat is a normally closed Closed cold switch mounted on the side of the well under the cavity As the unit comes up to operating temperature this Estat Switch opens which De Energizes R 1 relay coil initiating its functions The Slow Fill Float is mounted inside the cavity well This float is normally closed when it is down It controls the slow fill Slow Fill Float solenoid which controls the water level It energizes the slow fill solenoid as R 1 is energized and shuts off slow fill solenoid as the water rises This flow will cycle the slow fill solenoid on and off during normal full power operations RED WIRES The Low Water Float is also mounted inside the cavity well This float is a normally open switch It is open when it is down This float closes when the water level is above the elements Low Water Float This activates the R 1 relay coil Power is then routed through the Slow Fill Float to the Slow Fill Solenoid BLACK WIRES Rapid Steam Convection Steamer 10 94 PAGE 6 DRAIN SOLENOID The Drain Solenoid is a normally open solenoid valve that close
22. ent AE e md 8 9 10 Re attach copper tubing connections 1 1 Install limit thermostat and bracket 12 Install control panel and left side panel Remove control panel and left side panel Temporarily remove the limit thermostat and bracket from its location on the element retainer stops Disconnect the three 3 copper tubing connections from the solenoid assembly Remove the securing screw holding the solenoids in place small bracket in front of solenoid assembly Solenoid assembly can be pushed back turned and then pulled forward sideways to remove Leads will need to be disconnected from origins to remove assembly Remove and replace defective solenoid or flow control Note arrangement some care is required to re assembly Note direction arrow on flow regulator points towards rear of unit TIGHTEN CONNECTIONS Re install assembly into brackets Re attach leads carefully Refer to wiring diagram RELAYS 1 Remove control panel and right side panel 2 Remove defective relay Note wire terminal locations 3 Install new relay 4 Replace control panel and right side panel CONTACTOR 1 Remove control panel and right side panel 2 Disconnect wires and leads from contactor 3 Remove contactor 2 screws diagonal 4 Re install control panel and right side panel Rapid Steam PAGE 16 Convection Steamer 10 94 TIMED OUT LEGEND ee SCHEMATIC DIAGRAM VOLTAGE ENESTE wre NUMBERS
23. entical to R 1 R 3 and R 4 DPDT When the unit is started cold the well thermostat is in a Closed state which energizes R 2 Ready Coil In this Cold condition R 2 provides Full Power Main Elements startup when in the Idle position on the timer When unit comes up to operating temperature the well thermostat opens de energizing R 2 Relay Coil This transfers power to the other set of R 2 contacts and activates two 2 separate actions I The Ready light is illuminated and will remain so as long as unit is on 2 The Buzzer and Timed Out light will now BE ALLOWED to activate IF and WHEN a time is set on timer and ALLOWED TO TIME OUT R 3 RELAY R 3 Relay is the door switch controlled relay It 1s identical to R 1 R 2 and R 4 DPDT Its function is to allow certain activities to take place ONLY when the door is closed They are Fast fill Timer count down Slow fill Main contactor coil Condenser spray Buzzer Timed out light The R 3 also ACTIVATES R4 relay when the door is opened after timing down to R 4 then latches itself energized which leaves Timed Out light and buzzer de activated in idle mode Re settine a new timmer oneration releases the Latch of R 4 Du US E Sis PAGE 9 R 4 RELAY R 4 Relay is the Latching relay It is identical to R 1 R 2 and R 3 DPDT Its purpose is to allow the operator to respond to the continuous buzzer after timing down to 0 by simply opening the door R 3 en
24. ergizes R 4 when the door is opened R 4 then Latches holding itself energized Closing the door again leaves the unit in timed out idle without the buzzer or timed out light staying on When a new time is selected on the timer or the Manual mode is chosen the Latch on R 4 is released allowing the buzzer and timed out light to again operate when the timer times down to 0 abi LIMIT SWITCHES A amp B The Limit Switch is a bulb and capillary type limiting device which has two SPDT switches independent which trip at two different temperatures which are factory set and not adjustable Switch A is normally open and under normal operation will not be activated A capillary bulb is attached to the side of one element tube Sensing the operating temperature of the element As lime or calcium deposits begin coating the exterior of the elements the heat energy is NOT transmitted into the water thereby causing the elements to operate at a higher temperature When limit Switch A senses this temperature rise and trips it powers the De Lime light signaling the operator to perform cleaning and de scaling maintenance The unit will continue to run although not as efficiently Switch B is normally closed and set to trip at a higher temperature than Switch A Switch B is the final Dry Fire or Hi Limit protection It shuts off the Main Contactor coil in the event of significant temperature rise If scale conditions are
25. ght will come on after approximately 4 minutes from cold start PERFORMANCE CHECK The following items should be checked before or within the first 30 days of operation by a Southbend Authorized Service Agency and on a routine maintenance schedule thereafter 15 D QIN C Q WN Verify equipment is level Verify proper electrical characteristics Voltage cycle phase Check ventilation Check electrical connections external and internal Check door for proper alignment seal and adjustment Check timers and switches for proper installation and operation Verify proper water pressure and line size Verify proper drain set up Must be free venting Explain importance of keeping elements and floats free of scale Cover maintenance as explained in Owners Manual PAGE 15 REMOVAL AND REPLACEMENT INSTRUCTIONS FLOATS 1 2 J 4 3 Remove control panel left and right side panels Disconnect wire leads of faulty float or cut wires off Using 2 open end wrench remove float from inside well Wires or terminals will have to be cut off to remove Terminals will NOT fit through float mounting Install new float by feeding wires through mounting pulling through from below Tighten float with 2 open end wrench Attach new terminals to wire ends Plug into original locations SOLENOID VALVES FLOW CONTROL Positively identify and prove that a solenoid is defective before attempting replacem
26. i Es p s i ed pressure in an 208 V 60 Hz 1 47 28 gallons per minute a p S I water pressure IN conaenser U v S H total gallons per minute at 45 p s i 2 x 27 240 V 60 H 40 24 IMPORTANT UNIT MUST BE LEVEL FOR PROPER 240v 60Hz 1 40 2 OPERATION WARRANTY WILL BE VOIDED FOR IMPROPER 380 220 V 50 Hz INSTALLATION 415 240 V 50 Hz All units shipped 3 Phase Field convertible to 1 Phase 480 V 60 Hz Circuit must tie wired for maximum amps at required voltage Water Quality Specifications Water Pressure 60 p s i maximum 30 p s i minimum Install a pressure regulator if pressure exceeds 60 p s i In order to minimize service problems and to meet the warranty requirements a water treatment system softener is recommended when water quality exceeds the limits stated Total Dissolved Solids TDS 60 PPM Parts Per Million Hardness 2 grains or 35 PPM Ph Factor 7 0 to 7 5 DRAIN LINE The drain line connection size from the unit is 1 NPT 32 mm Position the unit near but not on top of an open floor drain DO NOT directly plumb to the unit unless you also install an open funnel downstream of this connection in the drain system Make the drain line from the unit to the air gap above the open funnel as short as possible There should be no horizontal piping between the unit and the air gap above the open funnel The open funnel is intended to eliminate any water from entering the steamer because of a b
27. locked drain and it also prevents any back pressure within the steamer cavity The unit must be free venting to the atmosphere Any connection that allows the build up of back pressure in the unit such as a reduction in pipe size to a line smaller than or a 90 degree angle in the line prior to the open funnel drain discharge point may cause personal or property damage and therefore will void the warranty This is a pressureless free venting steam cooker and will not operate properly unless the drain line is short at a steep angle and open See figure 3 Floor Drains PAGE3 PAGE 4 lt lt SERVICE oe OPERATING SEQUENCE RS 4E The RS 4E is a counter top pressureless steamer When the power switch is turned on the drain solenoid is energized directly and it closes The fast fill float is in the down position and the fast fill solenoid is energized through the NC contact in Relay 1 This fills the cavity well with water This is automatic regardless of timer position as the water rises to cover the elements it raises the low water float which energizes the RI relay The Rl relay when energized de energizes the fast fill solenoid and energizes the slow fill solenoid Refer to Figure I for fast and slow fill float locations BD Slow Fill Float Y Low Water Fast Fill Float Figure 1 The R 1 Relay then sends power to the Limit Switch Passing through the normally closed contacts and energizing the contactor and
28. na N C gt 27526 9312 919 762 1000 Fax 919 552 9798 1174935 PE 193 1177359 1177360 1177363 1177361 1177362 1174933 1177440 1177996 PE 185 1146388 6600030 1173448 1177441 PP 636 1174587 4440451 1178647 1176667 1178341 1170337 1174620 1177080 1176328 1177775 1332048 1 1332048 2 1333041 6600430 PH 238 PH 292 PH 423 PM 019 PM 141 PP 439 1178268 1177400 1178143 1177836 1179551 1179553 PP 275 R 2 Part s List POWER SWITCH LOWER WATER FLOAT 240V SEALED RELAY RELAY SOCKET RELAY GASKET TERMINAL BLOCK 3 POLE AT REAR TERMINAL BLOCK 4 POLE AT REAR WATER FILL SOLENOID WELL THERMOSTAT HIGH LIMIT BEGINNING SER 97A 19594 DOOR SWITCH SCREW FOR DOOR SWITCH READY LIGHT DE LIME LIGHT CONTACTOR POLYPANEL FLOW CONTROL SIDE RACK GUIDES DOOR ASSEMBLY PRIOR 8 14 98 DOOR ASSEMBLY BEGINNING 8 14 98 DRAIN VALVE TIMER TIMER KNOB SPRAY NOZZLE DOOR STRIKER CAST EXTERIOR COVER DRAIN TUBE LEFT DOOR HINGE RIGHT DOOR HINGE RACK MOUNTING STUD LOCKNUT LOCKNUT 20 NYLON WASHER BRONZE BUSHING HOSE CLAMP NYLON PLUG BUTTON T FEMALE WELL COVER DEFLECTOR COVER ELEMENTS AMBER LIGHT 240V LIGHT ASM 250V 6600028 LIGHT ONLY HOSE FITTING 90 DEGREE ELBOW FITTING 3 8 X 4 HOSE 90 DEGREE ELBOW 1174561 1178001 1174616 1178008 1174562 1178009 1174563 1178010 1174617 1178011 1174564 1178012 WHEN CHANGING ELEMENT FOR SERIAL NUMBERS PRIOR 97A 19594 ELEMENT ORDER HIGH
29. ntrol for the unit Power is coming to the switch in wires 7 and 8 When the switch is turned ON power then is switched to wires 9 and 10 respectively and independently 7 to 9 8 to 10 Power then travels through wire 9 to term block I and through wire 10 to term block 6 With a volt meter you should get 208 or 240 volts at any of these points The terminal strip is a connection point for components It is located behind the right hand side access panel Refer to Figure 2 It is divided into six 6 sections each having 6 1 4 spade male terminations Each section is essentially a function controlling or controlled by some other component Each of them are made Hot electrically at some point in operation Understanding these can aid greatly in troubleshooting Below is a description of each section and what its function is 1 Always hot when switch is On main Hot Check between 1 and 6 to verify supply voltages should be either 208 or 240 volts 2 Hot when R 1 is energized by low water float and the power switch is On and door is closed It also allows the contactor to energize the condensate solenoid 3 Hot when timer Times Out to 0 and the unit is in the Idle mode 4 Hot when timer is Timing or in Manual mode also on initial startup when unit is cold in idle well T stat will power this section through R 2 activating main elements to provide quick heatup 5 Common or Neutral side that is switch
30. s when energized Whenever power switch is On power goes to term stripe 3 and 6 Valve remains dosed always when power switch is on allowing water to fill and remain in cavity well It is located under cavity near rear Turning unit off opens valve and drains well CONDENSOR SLOW FILL AND FAST FILL SOLENOIDS The condenser Slow Fill and Fast Fill solenoids are all identical solenoids All three solenoids are located immediately behind the control panel The condenser solenoid valve is a normally closed closed when NOT energized solenoid valve which is activated simultaneously with main contactor coil when ready R 1 is energized by the low water float It is energized whenever Full Power running is active Manual or Timed NOT idle mode Controls water flow to condenser spray nozzle located in lower area behind control panel in solenoid assembly SLOW FULL SOLENOID The Slow Full Solenoid is a normally closed closed when NOT energized solenoid valve that is activated by slow fill float when R 1 is energized sufficient water It cycles off and on as float rises and falls maintaining water level in well FAST FILL SOLENOID The Fast Fill Solenoid is a normally closed closed when not energized solenoid valve providing a high volume quick fill action energized when power switch is turned on Remaining on only when R 1 is not yet activated When water level trips R 1 fast fill ceases slow fill begins PAGE 7 PAG
31. ted on the front of the unit at the upper left top comer of the door showing the model number and serial number only SAFETY PRECAUTIONS The following words and symbols found in this manual alert you to hazards to the operator service personnel or the equipment The words are defined as follows A DANGER This symbol warns of imminent hazards which will result in serious injury or death WARNING This symbol refers to a potential hazard or unsafe practice which could result in serious injury or death AN CAUTION This symbol refers to a potential hazard or unsafe practice which may result in minor aim or moderate injury or product or property damage This symbol refers to information that needs special attention or must be fully NOTICE understood even though not dangerous WARNING BURN HAZARD e Stand back when opening doors hot steam or hot water may escape from steamer Unit especially drain must be cleaned daily and properly maintained Clogged drain can create burn hazard when door is opened southbend 1100 Old Honeycutt A MIDDLEBY COMPANY Road Fuquay NC 27526 919 552 9161 FAX 919 552 9798 800 348 2558 SPEGIFICATIONS UTILITY INFORMATION For complete specifications consult the Owner s Manual Part 1176560 UTILITY INFORMATION ELECTRIC One electric connection required MAX AMPS PER LINE WATER USAGE AT TIMED OR MANUAL COOKING 0 08 TOTAL CONNECTED AMPS 1PHASE 3PHASE ue per ids
32. term strip 1 and 6 3 1 Disconnect power to unit CP Remove control panel and RT right side panel and inspect for wire terminals loose or wires disconnected 1 1 Remove Right Side Panel RT Verify R 3 activates when door closes 1 2 If R 3 does not activate check RT voltage across coll Voltage across coil door switch OK relay is bad No voltage across coil door switch is not being activated by door or door switch is bad 2 1 Check for voltage across RT solenoid coil TB 5 and NC contact on R 1 Relay Voltage across coil no action solenoid is bad No voltage re trace circuit and R 3 related items 3 1 Listen for water filling unit RT may fill partially even if drain solenoid has failed 3 2 Check voltage across drain solenoid coil TB j and 6 RT PAGE 11 Symptom Cause Does not fill in 4 Faulty R 2 Relay or Well T Timed Out Idle Stat position at startup R 2 energized cold by well Ready light is on T start powers fast fill in immediately at cold Idle startup startup R 2 is only energized when unit is cold Unit runs but slow 1 Slow Float stuck in fills continuous Down position Cooking compart ment is flooding Too much water in well Normal running should hear water fill cycling off and on Fast filling and 1 Faulty Slow Fill float contactor cycles on off Slow fill water is not maintaining sufficient level
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