MODEL KA7E ROTARY OVENS MODEL KA7E SELF-CLEANING, Pass-Through ML-137701 701 S. RIDGE AVENUE TROY, OHIO 45374-0001 937 332-3000 www.hobartcorp.
TABLE OF CONTENT GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Legs, Casters OR Stand ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation, Operation and Care of MODEL KA7E ROTARY OVENS SAVE THIS MANUAL FOR FUTURE REFERENCE GENERAL The KA7E 'seven-spit' rotary oven provides evenly cooked, appealingly roasted product with combination convection and radiant heat. A full view, tempered glass door is provided for loading, and an identical pass-through door is provided on the opposite side for unloading. • Quartz lighting promotes visual appeal and stimulates customer interest.
INSTALLATION Immediately after unpacking the oven, check for possible shipping damage. If the oven is found to be damaged, save the packaging material and contact the carrier within 15 days of delivery. Prior to installation, test the electrical service to make sure that it agrees with the specifications on the machine data plate located at the lower outside corner of the oven. LOCATION The oven must be installed on a level surface within 5 feet of both an open drain and a hot water supply.
Plumbing Connections Plumbing connections must comply with applicable sanitary, safety and plumbing codes. P1 Water Drain — 1" NPT female piped to an open drain. No solid connection. Output is 140°F maximum at 5 gpm. P4 Hot Water Supply — 3/4" male hose bib fitting. 0.5 gpm, 25 – 50 psi. For proper operation, use only HOT water, 120°F – 140°F. For installations at the end of a long hot water line, a second pre-rinse may be required to prime the line.
Chemical Cleaner Supply and Grease Drain Connections Oven cleaners are corrosive and can cause chemical burns. Rubber gloves, goggles and protective clothing are required. Read and follow the instructions for the oven cleaner. PIPE P2 Chemical Cleaner Supply — Hose barb to accept 1/4" ID chemically resistant tubing, supplied with oven. NOTE: Use only Kay Chemical CIP Cleaner or other approved cleaners for proper operation.
Electrical Connection Electrical and grounding connections must comply with the applicable portions of the National Electrical Code, ANSI / NFPA 70, latest edition, and / or other local electrical codes. Disconnect the electrical power supply to the machine and follow lockout / tagout procedures. The electrical connection is E1 (Fig. 1). Make sure that the electrical power supply agrees with the specifications on the oven data plate. Refer to the wiring diagram located inside the side panel.
PLACING THE ROTOR IN THE OVEN Do not wrap the rotor or any other parts inside the oven with aluminum foil. Soft metals can react with oven cleaners, and hazardous interactions can result. The rotor must properly engage with the drive mechanism. Orient the rotor so that the end plate with square drive slots is on the same side of the oven as the drive arm. STEP 1: Stop the drive arm so it is in the down position (Fig. 6). Fig.
OPERATION Hot glass, grease and parts can cause burns. Use care when operating and servicing the oven. Operator CONTROLS (Fig. 12) MESSAGE — CENTER TIME • • PM AM TEMPERATURE PROGRAM •F •C 1 ADD 5 • 2• 3• 4• 1 2 3 4 5 6 7 8 9 CLEAR START ADD 5 — Adds 5 minutes to the current step of the program each time it is pressed. PROBE — Displays temperature, external meat probe. 0–9 — Number keys enter numeric values. CLEAR — Clears time or temperature entry .
Pass-ThroUgh CONTROLS (Fig. 13) SNOOZE STOP SNOOZE — Adds 10 minutes to the previous step of the program and silences the beeper. Snooze is active only when the beeper is sounding at the end of a cook cycle. Snooze is not active during the cook cycle, during Hold or after the Stop or Silence buttons have been pressed. SILENCE — Silences the beeper. STOP — Stops the cycle. ROTATE — Rotor on/off, pauses cooking cycle; pauses the cleaning cycle. ROTATE Fig.
Initial Startup Power On Toggle the Main Power switch on the front panel of the oven to the ON position; the red indicator light on the switch comes on (Fig. 15). Idle Mode When the oven is first turned on, the display shows the time of day and the last operated program number. Any programmed steps for the selected program are indicated by illuminated step LEDs. The interior oven lights are off. Setting the Clock The oven's clock is preset at the factory to run two 12-hour cycles for A.M. and P.M.
SAVING OR VERIFYING A COOK PROGRAM (Program 1 – 9) Begin from Idle Mode. Example Program Step 1 Step 2 Step 3 Step 4 Temperature 375 425 325 200 Time 1:20 0:05 0:05 HOLd Program display shows last operated program (0 – 9). • Select a program (1 – 9). Program 0 is Manual Mode and cannot be saved into memory. • Press P for 3 seconds to enter programming mode. The program display shows the program/number being modified or verified (1 – 9). Cooking 'Step 1' LED is lit.
Cooking 'Step 3' LED is lit. Time display blinks. PROGRAMMING # 1 ENTER STEP3 TIME TIME 0:05 TEMPERATURE 0 AM PM F PROGRAM STEP 1 2 3 4 PROGRAMMING # 1 ENTER STEP3 TEMP TIME 0:05 TEMPERATURE 325 AM PM F P1 ENTER to accept (or, press CLEAR to void and reenter). Entering 0:00 for the time turns step 3 off and skips to step 4. Temperature display blinks. • Enter the desired cook temperature from 180 to 482 (degrees Fahrenheit).
Programmed Cooking (Program 1 – 9) Begin from Idle Mode. The Program display shows the last operated program (0 – 9). TIME AM 9:30 TEMPERATURE 425 PM F C PROGRAM P1 STEP • Select a saved cook program (1 – 9). Any programmed steps for the selected program are indicated by lit step LEDs. • Press START to run a preprogrammed cook cycle. 1 2 3 4 While running a cooking program . . .
Manual Cooking (Program 0) Begin from Idle Mode. The Program display shows the last operated program (0 – 9).
HOLDING CYCLE (SILENCING THE 'END OF CYCLE' ALARM) • • • HOLDING • • • PRESS SILENCE TIME 0:00 TEMPERATURE 325 AM PM F C PROGRAM 1 STEP 1 2 3 4 • • • HOLDING • • • PROGRAM 0 STEP 4 TIME AM 11:00 TEMPERATURE 200 PM AM PM F • Program displays "H" to indicate that the oven is in a Hold cycle. • The oven retains heat during a Hold cycle. Avoid overcooking by unloading when cooking is done. During a Cook or Hold cycle, • Press to stop the cycle.
ADDING COOK TIME • Press during a cooking cycle to add 5 minutes of cook time to the current step of the program in process. Press during the end of cycle buzzer or during Hold cycle to add 5 minutes of cook time to the last step of the last operated program. Press multiple times to add as much as desired up to a maximum total cook time of 6 hours. ADD 5 TIME AM :05 TEMPERATURE 325 PM F C PROGRAM P1 TIME STEP • is not active in Idle Mode after ADD 5 STOP has been pressed.
CLEANING THE TEMPERATURE PROBE (Optional Accessory) Clean the temperature probe after every use. 1. Remove the probe from the probe holder. 2. Unplug probe cord from the probe receptacle (if needed). 3. Wipe the probe with a cloth moistened in a soap and water solution. • Rinse in clean water and allow to dry. • Dry with a soft cloth. 4. Carefully plug probe cord back into the probe receptacle (if needed). 5. Place probe back in probe holder.
SUGGESTED ROASTING GUIDELINES The suggested cooking times and temperatures in the table may require adjustment for proper doneness depending on initial product temperature, weight, size, shape and other factors. Product Chicken, Whole, 3.0 — 3.5 lb. (1.4 — 1.
PREPARING, TYING & spitting — chickens ON V-SPITS The rotary oven is not designed to roast frozen foods. Use only fresh or previously thawed product. Bring chickens from cooler. Check temperature — range should be from 37°F to 42°F. Insert approved popper, if available; it will pop out when chicken is done. Using an approved tie, wrap around legs, pulling tie along the back, criss-cross over back. Tie comes over front holding wings to side of chicken. Insert V-Spit through neck first.
INCORRECT spitting — chickens ON V-SPITS t WRONG — Angle of spit is in line with breast. This will split the backbone and could possibly result in falling off the spit during cooking. t WRONG — Legs and thighs are not on same side as breast. This could cause legs to fall off during cooking. t WRONG — Legs are being inserted first. This could result in birds moving along spits during cooking.
Spits are sharp. Use care when loading product. spitting — chickens ON FORK SPITS Press pointed ends of spits into whole poultry so points go through the chest-wing and leg-thigh regions (Fig. 17). Load four or five chickens on each fork spit. Fig. 17 spitting — chickens ON THERMO-WAVE SPITS After tying chickens, insert thermo-wave spit through neck first. Load three or four chickens on each thermowave spit.
Loading V-Spits or Thermo-Wave Spits on the Rotor 1. Place pointed end of V-spit into outside hole on non-drive side of rotor (Fig. 21). 2. Fit notched end of V-spit into appropriate holes on drive side of rotor (Fig. 22). 3. Make sure the spit is level. If the spit is not level, you might be using the wrong holes. NON-DRIVE SIDE DRIVE SIDE Fig. 21 Fig. 22 Loading Fork Spits on the Rotor 1. Place pointed ends of fork spit into appropriate holes on the non-drive side of the rotor (Fig. 23). 2.
the oven. Hot glass, grease and parts can cause burns. Use care when operating and servicing UNLOADING ACCESSORIES FROM THE OVEN Opening the door does not stop the rotor, heaters or fan. 1. Press to stop rotation and cooking. Press Rotate Knob to allow rotor to advance to unloading position. Press Rotate Knob again to stop rotation. 2. Use insulated gloves. STOP • Carefully remove accessory from rotor. Remove chickens from accessory. • Place chickens in proper containers.
Changing the Chemical Bottle Oven cleaners are corrosive and can cause chemical burns. Rubber gloves, goggles and protective clothing are required. Read and follow the instructions for the oven cleaner. • Remove the chemical pick-up tubing and PVC standpipe with angled ends from the empty bottle. Avoid spilling or skin contact. • Place the full bottle of chemical in the proper location. • Remove the cap. • Insert the chemical pick-up tubing (inside the PVC standpipe) (Fig.
AUTOMATIC CLEANING Oven cleaners are corrosive and can cause chemical burns. Rubber gloves, goggles and protective clothing are required. Read and follow the instructions for the oven cleaner. Do not open doors during cleaning. Do not wrap the rotor or any other parts inside the oven with aluminum foil. Soft metals can react with oven cleaners, and hazardous interactions can result. NOTE: The self-cleaning oven is not intended to be a utensil washer. Remove all accessories (Fig. 31) before you press clean.
• Pre-rinse cycle. Fig. 34 • CLEANING WATER FILL • CLEANING DEGREASE # 1 The oven rinses briefly. • CLEANING WATER DRAIN Water drains from the Pre-rinse cycle. Water is being added (Fig. 34). • Washing and Soaking cycles. • • • CLEANING WATER FILL Water is being added. CLEANING ADDING DETERGENT Detergent is added to the water in the sump. CLEANING CLEANING WASHING SOAKING 34 Water sprays for 1 minute, then turns off to allow soaking for 7 minutes. Repeat.
WIPE DOWN 4. Press main power switch OFF (Fig. 35). NOTE: Thoroughly wipe off any white chemical residue remaining in the oven, steps 5 – 10. If the residue does not wipe off readily with a clean damp cloth, a dilute solution of vinegar and water may be used. Do not use abrasives. Fig. 35 STRAINER UPSIDE DOWN 5. Remove the drip strainers. The underneath surface of the drip strainers may also have white chemical residue or dirt.
8. Wipe out the trough below the door opening (Fig. 39). 9. Separate the inner and outer doors by grasping at either the upper or the lower corner (Figs. 40, 41). WIPE OUT TROUGH Fig. 39 GRASP AT BOTTOm GRASP AT TOP Of DOOR Fig. 40 WIPE cLEAN ALL INSIDE AND OUTSIDE GLASS DOOR SURfAcES Fig. 41 10. Wipe off the inside and outside glass surfaces of both glass doors (Fig. 42) on both the operator and customer sides of the oven. Wipe off wet glass with a clean dry cloth to avoid streaks.
REPLACE DRIP STRAINERS PROPERLY NOTcH ON SIDE Of DRIP STRAINER 11. The notch in the drip strainer must be placed around the water pipe and block fitting (Fig. 43). WATER PIPE AND BLOck fITTING Fig. 43 12. Drip strainers must be seated (Fig. 44). • Tabs under the drip strainer handles fit slots in the wash arm support. • Both handles are in the middle. DRIP STRAINERS ARE SEATED Fig. 44 13. Wash arm spins freely (Fig. 45). Q Fig. 45 WIPE OFF EXTERIOR 14.
Figs. 46, 47, 48 and 49 show wrong ways to assemble the drip strainers. DRIP STRAINERS ARE TURNED 90 DEGREES HANDLES SHOULD BE IN THE mIDDLE TABS ARE NOT IN SLOTS ON WASH ARm SUPPORT WRONG t Fig. 46 DRIP STRAINERS ARE NOT SEATED WASH ARm IS UNDERNEATH WRONG t Fig. 47 DRIP STRAINERS UPSIDE DOWN WRONG t Fig. 48 DRIP STRAINERS TURNED 90 DEGREES HANDLES SHOULD BE IN mIDDLE WRONG t Fig.
DELIMING WITH VINEGAR Remove all accessories. The rotor can remain. Deliming with vinegar provides a short rinse to clear out any remaining soapy residue from cleaning or chemical salts. Deliming is recommended once a week, after an automatic cleaning cycle and after manually wiping out the oven interior (refer to pages 26 through 31). Do not open doors during deliming. 1. Press the CLEAN key. Press the 0 key within 20 seconds (Fig. 50).
PUMP TUBE MAINTENANCE MAINTENANCE Pump tubing is a wear item. Contact Hobart Service to replace tubing periodically on grease pump, chemical pump and water pump to avoid leakage. TUBING LEAkS ARE DIREcTED OUTSIDE OVEN As pump tubing wears, leaks can occur. In the event of tubing leak or break, machine is designed to direct liquids to outside of oven (Fig. 52). If this condition is observed, contact Hobart service. Fig.
3. To remove the upper cover from the three pins, front, and three pins, rear, grasp the front edge of the cover with both hands (Fig. 56). Press with both thumbs to release the front pins. Pull forward to escape the three pins in the rear and lower the upper cover. Manually clean the upper side of the upper cover in a sink. Rinse off both sides and wipe dry. fRONT Of UPPER cOVER Fig. 56 4. Remove both fan blades. Unscrew the center nut on each fan blade (Fig. 57). These nuts are left-hand thread.
7. After cleaning, reinstall the two fan blades: Mate the flat side of the D-shaped hole on the fan to flat side of the D-shaped shaft. Assemble and tighten the nut counterclockwise to the shaft (Figs. 60, 61, 62). Make sure the fans rotate freely after installing. FAN CENTER NUT FAN CENTER NUT D HOLE Fig. 60 Fig. 61 Fig. 62 8. Reinstall the upper cover. Hold the front of the upper cover with both hands.
TROUBLESHOOTING PROBLEM POSSIBLE RESOLUTION Control does not light up. 1. Press On-Off switch on. 2. Electric supply is interrupted; check circuit breaker. Cooking too slow. Fan blade(s) and ventilation area require routine cleaning. Water isn't spraying during wash Wash cycle is in soak mode. Display says 'Soaking'. cycle. Wash arm isn't turning. Drip strainers are not in their proper place and are interfering with wash arm motion; check drip strainers.
