INSTALLATION, OPERATION and MAINTENANCE MANUAL for Cres Cor AQUATEMP TM HUMIDITY CONVECTION and RETHERM OVENS with MICROPROCESSOR CONTROLS

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1 9 Heisley Road Mentor, OH 0- Rev. (6/0) Page of INSTALLATION, OPERATION and MAINTENANCE MANUAL for Cres Cor AQUATEMP TM HUMIDITY CONVECTION and RETHERM OVENS with MICROPROCESSOR CONTROLS ROFWB-Q COFWUAB-Q ROFWUAB-Q COXWUAB-Q COHWUA6B-Q COFPWUAB-Q ROFPWUAB-Q Call Toll-free: -CRES COR (-6) Fax:

2 Rev. (6/0) Page of 9 Heisley Road Mentor, OH 0- TABLE OF CONTENTS SUBJECT PAGE INSTALLATION INSTRUCTIONS OPERATING INSTRUCTIONS ,, 6 Illustration, Figure MAINTENANCE INSTRUCTIONS How to Clean the Unit Trouble Shooting Guide , 9 Replacement Parts , 0 Illustrations; Hot Unit (Figures and ) , Wiring Diagrams SERVICE POLICY and AGENCY LIST FL-00 WARNING RISK OF FIRE OR ELECTRIC SHOCK DO NOT OPEN WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE REPAIR SHOULD BE DONE BY AUTHORIZED SERVICE PERSONNEL ONLY Call Toll-free: -CRES COR (-6) Fax:

3 9 Heisley Road Mentor, OH 0- VENTING YOUR OVEN:. The purpose of ventilating hoods is to direct and capture smoke, grease-laden vapors, heat, odors, or fumes.. Low temperature equipment (maximum temperature F/ C) does not produce heat, odors, fumes, grease-laden vapors or smoke and is not required to be vented. INSTALLATION INSTRUCTIONS UNIT SPECIFICATIONS: All units use three () elements (60 watts each). All units are rated 0 watts. Water units have one () immersion element (0 watts). MODEL NOS. ELECTRICAL SPECS (AC SERVICE) Rev. (6/0) Page of Most jurisdictions consider our low-temperature ovens (maximum temperature is 0 F/ C) as low-heat appliances not requiring vent hoods. Installation must conform with local codes. The authority having jurisdiction of enforcement of the codes will have the responsibility for making interpretations of the rules. HOW TO INSTALL CABINETS: LOW LIGHT:. Remove all packing material from inside and outside When water needs to be added to the pan, the Low Water of cabinet. Light will stay on until the pan is refilled.. Position cabinet on level floor; install the cabinet interior (pan slides) if not already installed.. Plug power cord into proper wall receptacle. CAUTION. Fill water pan with three () gallons of HOT water Use of treated water is recommended for (see CAUTION). proper operation and to maintain warranty. It will reduce scaling. Call Toll-free: -CRES COR (-6) Fax: ELEC. LOAD POWER SUPPLY REQUIREMENT ALL PHASE IS WIRE + GROUND CONVECTION OVENS Volts Ph Hz. Amps Volts Amps Ph Volts NEMA COFWUABQ COFWUABQ COFWUABQ COFWUABQ RETHERM OVENS ROFWUABQ ROFWUABQ ROFWUABQ ROFWUABQ ROFWBQ ROFWBQ ROFWBQ ROFWBQ HALF-SIZE OVENS Are rated at 90 watts (three [] heaters at 0 watts each) COHWUA6BQ COHWUA6BQ COHWUA6BQ COHWUA6BQ COXWUABQ COXWUABQ COXWUABQ COXWUABQ P 6-0P L-0P L-0P 6-0P 6-0P L-0P L-0P 6-0P 6-0P L-0P L-0P 6-0P 6-0P L-P L-P 6-0P 6-0P L-P L-P

4 R Ovens Humidity with Rev. (6/0) Page of 9 Heisley Road Mentor, OH 0- OPERATING INSTRUCTIONS POWER SWITCH COOKING/HOLDING CONTROL HUMIDITY CONTROL TM Roast-N-Hold + ON ( I ) MODE PROBE TIMED TIME / TEMPERATURE SETPOINTS COOK 6 MEDIUM OFF ( 0 ) POWER SELECT HEAT OVEN TEMP COOK START HOLD STOP PROBE TIME HOLD SET LOW HIGH 9 DRY MOIST 0 HUMIDITY LOW Figure : Control Panel HOW TO START UNIT: (for first-time operation only) A new oven needs to burn off factory oils and glue before it s first use. Do NOT load food into oven until this has been done!. Push power switch to ON.. Press the SELECT button; choose the TIMED mode.. Press the COOK button and set the temperature to 0 F/ C.. Press the HOLD button and set the temperature to 0 F/66 C.. Press the PROBE/TEMP button and set the timer to one () hour. 6. Allow oven to run automatically for one () hour of COOK/RETHERM cycle and 0 minutes of HOLD cycle. HOW TO SET THE CONTROL FOR TIMED COOK OPERATION: Press the SELECT button to choose the TIMED mode. COOKING TIME:. Press the PROBE/TIME button. The display will show the cook/retherm time.. Use the UP and DOWN arrows to set the desired time.. Press the SET button to enter the time into the control. NOTE: Cold food is NOT to be added when unit is operating in HOLD mode. COOKING TEMPERATURE:. Press the COOK button and the display will show the cook/retherm temperature.. Use the UP and DOWN arrows to set the desired temperature.. Press the SET button to enter the temperature into the control. NOTE: Press the OVEN TEMP button at any time to view the actual oven temperature. HOLDING TEMPERATURE:. Press the HOLD button; the display will show the holding temperature.. Use the UP and DOWN arrows to set the desired temperature. NOTE: Proper food holding temperature is 0 F/ C or higher.. Press the SET button to enter the temperature into the control.. Press the START button and the display shows the remaining time in the cook/retherm cycle. NOTE: The control will beep after it times down to zero; it will then automatically switch to the HOLD mode. The display will then show the hold setpoint temperature. For HOLD mode, preheat unit to 0 F/ C for minutes. Call Toll-free: -CRES COR (-6) Fax:

5 9 Heisley Road Mentor, OH 0- OPERATING INSTRUCTIONS, continued Rev. (6/0) Page of HOW TO SET THE CONTROL, continued FOR PROBE COOK OPERATION: Press the SELECT button to choose the probe mode. PROBE TEMPERATURE:. Press the PROBE/TIME button. The display will show the probe setpoint temperature.. Use the UP and DOWN arrows to set the desired temperature.. Press the SET button to enter the temperature into the control. NOTE: Press the OVEN TEMP button at any time to view the actual oven temperature. Press the START button and the display will show the actual probe temperature. NOTE: The control will beep when the probe setpoint temperature has been reached and then will automatically switch to HOLD mode. The display will then show the hold setpoint temperature. To manually end the COOK/RETHERM, PROBE, or HOLD mode: Press the STOP button during any of the above modes and the control will end that mode. If in the Cook/Retherm or Probe mode, the control will automatically switch into the HOLD mode. 6.. Place the food into oven. Close door and double check cooking time and temperatures. Then press the START button to start the cooking/retherm cycle and the Cook LED will light up. The oven will beep and automatically switch to the HOLD mode at the end of the cooking cycle. The Cook lamp will go out and the Hold lamp will light up. Probe Cooking See HOW TO SET THE CONTROL (on page ) for programming instructions.. Push power switch to ON.. Press the SELECT button and choose the Probe mode.. Insert the probe jack into the receptacle located inside the oven top, near the fans. The probe temperature display will show the digital temperature of the probe.. Put sanitized probe into center of food product. Make sure food is in the center of the pan and the pan is centered in the oven.. Press the start button. The cook lamp will light up and the display will show the internal temperature of the food being cooked. NOTE: Do NOT change the mode of the controls (probe or timed) while oven is operating in a Cook/ Retherm cycle. Oven must be in the HOLD cycle to change the timer or probe operation. HOW TO OPERATE WITH FOOD: Manual (Timed mode) Operation See HOW TO SET THE CONTROL (on page ) for programming instructions.. Push power switch to ON.. Press the SELECT button and choose the TIMED mode.. Press the COOK button and set to desired temperature.. Press the PROBE/TIME button and set to the desired time.. Press the HOLD button; set desired temperature. Call Toll-free: -CRES COR (-6) Fax:

6 Rev. (6/0) Page 6 of 9 Heisley Road Mentor, OH 0- OPERATING INSTRUCTIONS, continued HOW TO OPERATE WITH FOOD, continued HOW TO SET HOLD-ONLY MODE:. Push power switch to ON.. Press the STOP button and oven will switch to HOLD cycle.. Press the HOLD button and set the desired hold temperature. NOTE: Cold food is NOT to be added when unit is operating in HOLD mode. For HOLD mode, preheat unit to 0 F/ C for minutes. HOW TO SHUT DOWN OVEN: Push switch to OFF. CAUTION Ventilating fans will continue to run until the cabinet is cool. Do NOT disconnect the power supply to the cabinet while the ventilating fan is still operating. HOW TO OPERATE WITH HUMIDITY: WARNING Air is VERY HOT when door is opened. Humidity control is on the right of the control panel (see Figure ). Humidity may be used in all control modes. Turn control knob to extreme counter-clockwise position when humidity is not needed. Make sure there is water in the water pan. HOW TO PROOF:. Fill the water pan with three () gallons of HOT water.. Set the humidity control at low to mid-range.. Set the Hold control to Nominal F/9 C.. Preheat the oven at this setting for ½ hour.. Put in product. DO NOT use frozen product. Listed below are typical thermostat settings. Experiment with different settings to get the temperature and humidity you need. HOLD Dial Setting TEMPERATURE / HUMIDITY SETTINGS HUMIDITY Dial Setting Temp., F/ C / / / / /9 0 0 Values Listed are % Relative Humidity. Call Toll-free: -CRES COR (-6) Fax:

7 9 Heisley Road Mentor, OH 0- Rev. (6/0) Page of MAINTENANCE: PAN Drain, wipe and fill water pan daily. (Clear vinyl drain-hose is provided).. Push hose onto drain nozzle under the base.. Turn knob to open the drain. To Fully Dry Out:. Drain until / of water is left in pan bottom.. Turn humidity Thermostat to High until water is gone.. Wipe out pan. CAUTION Delime or descale water pan parts as required, to prevent damaging build-up. WARRANTY COVERAGE MAY BE AFFECTED WITHOUT PROPER CLEANING. MAINTENANCE INSTRUCTIONS HOW TO CLEAN THE UNIT MAINTENANCE: CABINET. Wipe the inside of cabinet after daily use.. Leave doors slightly open to fully dry interior.. Unplug cord from wall. Allow cabinet to cool.. Do NOT hose cabinet with water.. Do NOT get water on controls.. WARNING BEFORE cleaning the cabinet: Do NOT use abrasives or harsh chemicals. Cleaning Hints:.. Use the mildest cleaning procedure that will do the job. Always rub in the direction of the polish lines to avoid scratching the surface.. Use only a soft cloth, sponge, fibrous brushes, plastic or stainless steel pad for cleaning and scouring.. Rinse thoroughly with fresh water after every cleaning operation.. Always wipe dry to avoid water marks. HOW TO CLEAN THE UNIT: SOIL CLEANER METHOD CABINET Inside and Outside (Stainless Steel) ROUTINE CLEANING STUBBORN SPOTS, STAINS BURNT ON FOODS OR GREASE HARD SPOTS & SCALE Soap, ammonia or mild detergent* and water. Mild abrasive made for Stainless Steel. Chemical oven cleaner made for Stainless Steel. Vinegar. Sponge on with cloth. Rinse * Mild detergents include soaps and non-abrasive cleaners. Apply with damp sponge or cloth.. Rub lightly. Follow oven cleaner manufacturer s directions.. Swab or wipe with cloth.. Rinse and dry. Call Toll-free: -CRES COR (-6) Fax:

8 Rev. (6/0) Page of 9 Heisley Road Mentor, OH 0- WARNING PROBLEM POSSIBLE CAUSE SOLUTION Cabinet does not heat, or doesn t heat properly. Fuse. Control. Sensor. Heater contactor. Loose wiring at heater contactor 6. On/Off Switch. Replace. Replace. Replace. Replace. Replace 6. Replace Blowers do not operate. On/Off Switch. Fuse. Blower. Control. Replace. Replace. Replace. Replace Heater will not shut off. Control defective. Replace Vent fans do not shut off Vent fans do not operate (See Note) Control will not switch from COOK to HOLD (timed mode) Control will not switch from COOK to HOLD (probe mode) Control will not switch to COOK (probe mode) No Humidity MAINTENANCE INSTRUCTIONS TROUBLE-SHOOTING GUIDE IF UNIT GETS TOO HOT OR WON T SHUT OFF, DISCONNECT POWER AT BRANCH PANEL. DO NOT UNPLUG CORD!. Cord is unplugged from wall outlet.. Circuit breaker/fuse to wall outlet is blown. If hot unit is NOT working, first check the following causes:. Vent fan switch defective. Control compartment is still hot.. Fuse. Vent fan switch defective. Vent fan defective. Oven is in PROBE mode.. Control defective. Oven is in the TIMED mode. Probe not plugged in. Control defective. Oven in TIMED mode. Probe temperature setting lower than probe temperature. Probe not plugged in. Control defective. Water element defective. Humidity control. Switch is turned off.. Thermostat is turned off, or is set too low.. Replace. Wait until it cools Check Heater will not shut off. Replace. Replace. Replace. Switch to TIMED mode. Replace. Switch to PROBE mode. Plug in probe. Replace. Switch to PROBE mode. Set probe temperature to desired temperature. Plug in probe. Replace. Replace. Replace NOTE: Vent fans will not operate until the control compartment requires ventilation to limit temperatures. Replacement of electrical components must be done by a qualified electrician. Refer to our Service Agency list, FL-00 (found in the back of this manual), of authorized service centers. Instructions for replacing parts are included in replacement parts list. Call Toll-free: -CRES COR (-6) Fax:

9 9 Heisley Road Mentor, OH 0- Rev. (6/0) Page 9 of MAINTENANCE INSTRUCTIONS TROUBLE-SHOOTING GUIDE, continued HOW TO ADJUST THE DOOR LATCH:. For vertical (up and down movement) adjustment: a. Loosen () screws located in magnetic strike. b. Move strike up or down for alignment to magnet on latch. c. Tighten screws to secure. For horizontal (greater or lesser magnetic draw) adjustment: a. Loosen () screws in door latch. b. Move latch forward or backward to adjust magnetism. c. Tighten screws to secure. HOT UNIT REMOVAL:. Disconnect power cord from wall outlet.. For half-size model: COHW Series, remove screws around top cover.. Disconnect the yellow cord between top and bottom, in the back of the cabinet (see Figure ).. Lift off Hot Unit. FIGURE HOT UNIT REMOVAL REPLACEMENT PARTS: Include all information on nameplate when ordering parts. Cabinet Replacement Parts MODEL PREFIX CO-, RO- ( Q SERIES) DESCRIPTION -FPWUA (), () -FWUA (), () -FW -HWUA6 -XWUA Hot Unit, V, Ph HU60Q HU60Q HU609Q HU60Q HU60Q Hot Unit, V, Ph HU60Q HU60Q HU60Q HU609Q HU609Q Hot Unit, V, Ph HU60Q HU606Q HU600Q HU60Q HU60Q Hot Unit, V, Ph HU606Q HU60Q HU60Q HU600Q HU600Q Door Latch Kit K K K K K Door Strike K K K K K Door Hinge 09-0-K 09-0-K 09-0-K 09-0-K 09-0-K Door Assembly --K --K --K --K --K Door Gasket 06--K 06--K K 06--K Angles or Racks 06--SS-K 06--SS-K SS-K 06--SS-K Side Handles (), Black Recessed Call Toll-free: -CRES COR (-6) Fax:

10 Rev. (6/0) Page 0 of 9 Heisley Road Mentor, OH 0- REPLACEMENT PARTS Include all information on nameplate when ordering parts 6 TM Roast-N-Hold + R ON ( I ) OFF ( 0 ) POWER MODE PROBE TIMED SELECT TIME / TEMPERATURE HEAT COOK HOLD OVEN START STOP TEMP SETPOINTS COOK PROBE SET TIME HOLD 6 MEDIUM LOW HIGH 9 DRY MOIST 0 HUMIDITY LOW FIGURE : CONTROL PANEL Hot Unit Replacement Parts ITEM DESCRIPTION Part No.. Switch (On/Off) K. Thermostat/Timer, Cooking/ Holding. Vent Fan Fan Guard Fuse (Before -0) 00-0 Fuse (After -0) 00- Fuse Holder (Before -0) 00-0 Fuse Holder (After -0) Blower Kit SSK. Contactor Terminal Block, front Terminal Block, rear Switch, Fan 0-0. Hi Limit Switch (Pass-thru) 0-0 Hi Limit Switch Sensor Sensor Bushing 0-0. Connector, probe Probe. long Probe 6 long Relay 0--K 6. Thermostat, Humidity AC. Knob, Humidity Thermostat Pilot Light Receptacle (6 pin) Resistor (For Relay) 0-9 Float Switch 0- Water Pan Kit, V K Heater, V 0- Water Pan Kit, V 06-0-K Heater, V 0- ITEM DESCRIPTION Part No. PARTS for 0W, -PH UNITS. Power Cord 00- Power Cord (Pass-thru) Heater Kit, V 0-6 Heater Kit, V 0-6. Strain Relief 0-06 PARTS for 0W, -PH UNITS. Power Cord 00- Power Cord (Pass-thru) Heater Kit, V 0-6 Heater Kit, V 0-6. Strain Relief 0-00 PARTS for 90W, -PH UNITS. Power Cord Heater Kit, V 0-0-K Heater Kit, V K. Strain Relief 0-00 PARTS for 90W, -PH UNITS. Power Cord Heater Kit, V 0-0-K Heater Kit, V K. Strain Relief 0-00 Call Toll-free: -CRES COR (-6) Fax:

11 9 Heisley Road Mentor, OH 0- REPLACEMENT PARTS for NON-PASS THRU OVENS CO or ROFW SERIES Include all information on nameplate when ordering parts Rev. (6/0) Page of FIGURE ; Hot Unit w/o Top cover (For parts description, refer to page 0.) FIGURE ; Bottom of Hot Unit, Cover Removed (For parts description, refer to page 0.) Call Toll-free: -CRES COR (-6) Fax:

12 Rev. (6/0) Page of 9 Heisley Road Mentor, OH 0- REPLACEMENT PARTS for PASS-THRU OVENS CO or ROFPWUA SERIES Include all information on nameplate when ordering parts FIGURE ; Hot Unit w/o Top cover (For parts description, refer to page 0.) FIGURE ; Bottom of Hot Unit, Cover Removed (For parts description, refer to page 0.) Call Toll-free: -CRES COR (-6) Fax:

13 9 Heisley Road Mentor, OH 0- Rev. (6/0) Page of WIRING DIAGRAM PHASE G L L 6 HEATER CONTACTOR RELAY A B 9 R=K WHITE BLACK FUSE FUSE HIGH LIMIT HIGH LIMIT SINGLE PHASE V V H H H 0 HIGH TEMP BM BM L R BM C ORANGE A Water Thermostat BLUE WHITE BLACK ORANGE RED GREEN BLUE WHITE BLACK ORANGE RED GREEN 6 POWER SWITCH A 9 0 AC-N 0v v FAN Temp. Control Board HEAT FLOAT SWITCH HEATER V SENSOR FLOAT SWITCH HEATER V SENSOR RTD RTD SENSOR OVEN SENSOR PROBE PHASE G L L L 6 HEATER CONTACTOR RELAY A B 9 R=K WHITE BLACK V V FUSE FUSE HIGH LIMIT H H HIGH LIMIT H THREE PHASE 0 HIGH TEMP BM BM BM C ORANGE A Water Thermostat BLUE WHITE BLACK ORANGE RED GREEN POWER SWITCH 6 A 9 0 AC-N 0v v FAN Temp. Control Board HEAT FLOAT SWITCH HEATER V SENSOR RTD RTD SENSOR OVEN PROBE SENSOR t t t t L R t t t Call Toll-free: -CRES COR (-6) Fax:

14 Rev. (6/0) Page of 9 Heisley Road Mentor, OH 0- OPERATING INSTRUCTIONS FOR OVENS WITH OPTIONAL PRODUCT KEYS POWER SWITCH PRODUCT KEYS PROBE RECEPTACLE CONTROL ON MODE TIME - TEMPERATURE SETPOINTS RETHERM PROBE TIMED COOK SELECT HEAT COOK HOLD TIME PROBE SET OVEN TEMP START STOP HOLD OFF POWER CONTROL PANEL The Product Keys provide automatic menu selections (arranged in banks of keys, max. 0 keys). Each Product Key can be user programmed for desired mode (PROBE or TIMED) and the required COOK, HOLD, and PROBE or TIME setpoints. Each Product Key Lights up when pressed ON. The Product Key Light will go OFF when pressed a second time or when changing any setpoint value. This returns the control to manual operation. Product Key Programming. Press the desired Product Key.. Press and hold the SET key until the Product Key light begins to flash.. Enter the desired Mode, Cook, Hold and Probe/Time values. NOTE: Press the SET key after each value is changed or added to accept and store a new setpoint.. To exit; Press the SET key for a few seconds until the Product Key light is extinguished. Extra Replacement Parts: Product Key ( Keys) 0-0 For Hot Unit Replacement, See Page 9: The Hot Unit suffix number will be Q ( Keys) or Q0 (0 Keys) instead of Q Call Toll-free: -CRES COR (-6) Fax: