Hobart Food Machines KA7E Installation Manual
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.com
F35521 (May, 2008)
TABLE OF CONTENT
GENERAL ............................................................3
INSTALLATION ........................................................ 4
LOCATION ......................................................4
LEGS, CASTERS OR STAND ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . 4
CONNECTION INFORMATION — GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Plumbing Connections .........................................5
Chemical Cleaner Supply and Grease Drain Connections ..............6
Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
PLACING THE ROTOR IN THE OVEN ................................ 8
OPERATION ..........................................................9
OPERATOR CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PASS-THROUGH CONTROLS ..................................... 10
BEFORE FIRST USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
INITIAL STARTUP ............................................... 11
Power On ............................................... 11
Idle Mode ............................................... 11
Setting the Clock ......................................... 11
Changing Temperature Readings to Celsius .................... 11
SAVING OR VERIFYING A COOK PROGRAM (Program 1 – 9) ........12
PROGRAMMED COOKING (Program 1 – 9) .......................14
MANUAL COOKING (Program 0) ................................ 15
HOLDING CYCLE (SILENCING THE 'END OF CYCLE' ALARM) ....... 16
STOPPING A CYCLE .........................................16
PAUSING A CYCLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
ADDING COOK TIME ......................................... 17
SNOOZING A CYCLE (SILENCING THE 'END OF CYCLE' ALARM) ....17
CLEANING THE TEMPERATURE PROBE (Optional Accessory) . . . . . . . 18
99 PROGRAM FEATURE ......................................18
OPERATOR ID FEATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
SUGGESTED ROASTING GUIDELINES .......................... 19
Entering Recipe Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
PREPARING, TYING & SPITTING — CHICKENS ON V-SPITS ..... 20
SPITTING / LOADING ..................................... 22
LOADING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
UNLOADING ACCESSORIES FROM THE OVEN ...................24
EMPTYING THE GREASE CONTAINER .......................... 24
CHANGING THE CHEMICAL BOTTLE . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
AUTOMATIC CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
WIPE DOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
REPLACE DRIP STRAINERS PROPERLY . . . . . . . . . . . . . . . . . . . . . . . . 30
WIPE OFF EXTERIOR ........................................30
DELIMING WITH VINEGAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
PUMP TUBE MAINTENANCE ...................................... 33
YEARLY CLEANING .............................................33
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
SERVICE ...................................................... 36
© HOBART, 2008
– 2 –
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.
• A stainless steel interior is provided for ease of cleaning.
• A pumped drain delivers excess fat to a grease receptacle.
• Automatic self-cleaning thoroughly washes and cleans the oven interior.
• Use only one type of accessory in the oven at any time.
KA7E ACCESSORIES
Type of Spit Qty Whole Chicken Capacity
V-Spit 7 21 - 28
Thermo-Wave Spit 7 21 - 28
Meat Fork Spit 7 28 - 35
5-Position Rack 7 35
4-Position Rack 7 28
Baskets 7 Hold Chicken Parts
– 3 –
LOCATION
E1
P1
P4
P3
P2
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
specications on the machine data plate located at the lower outside corner of the
oven.
The oven must be installed on a level surface within 5 feet of both an open drain
and a hot water supply. The installation location must allow adequate clearances
for servicing and for proper operation. Suitable space is needed for the grease
container and the chemical cleaner supply bottle and for access at the doors. For
stacked and countertop congurations, the minimum clearance on the right side
for plumbing and electrical connections is 3". For out-of-sight, drop-through utility
connection into the stand accessory, 0" clearance is required on all sides. Wood
laminates, veneers, etc. are unsuitable materials for use in areas exposed to self-
cleaning oven, steam and detergents. The rotary oven must not be installed in
high-moisture environments such as meat rooms or where high pressure cleaning
is used.
LEGS, CASTERS OR STAND ACCESSORIES
A set of four 4" tall legs is available as an accessory. Casters are included with the
stacking kit accessory. An oven stand accessory is available; the oven is mounted
on top of the stand.
Tethering is required for units equipped with casters, either on a stand or stacked.
Refer to the Stand or Stacking Kit Instructions for additional installation
information.
CONNECTION INFORMATION — GENERAL
Machine comes standard with utility connections on the right
side (Figs. 1 & 2).
For out-of-sight, drop-through utility connection into the stand
accessory, contact Hobart Service. A drop-through utilities
relocation kit is included with the stand accessory.
Legend (Fig. 1)
E1 Electrical, page 7.
P1 Water Drain, page 5.
P2 Chemical Supply, page 6.
P3 Grease Drain, page 6.
P4 Hot Water Supply, page 5.
Fig. 1
– 4 –
Plumbing Connections
E1 ELECTRICAL
P1 WATER DRAIN
P2 CHEMICAL SUPPLY
P3 GREASE DRAIN
P4 HOT WATER SUPPLY
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 tting. 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. Contact Hobart
service to make any needed parameter changes to Cleaning cycle programming.
The sensors on the machine need to see a small amount of minerals in the water
in order to work properly. But, excessive minerals may cause lime scale build-up.
Recommended water hardness, 4 – 6 grains. Minimum conductivity required,
30 MICROMHOS/CM.
Plumbing connections must comply with applicable sanitary,
Fig. 2
– 5 –
Chemical Cleaner Supply and Grease Drain Connections
PIPE
TUBING
CAP
REMOVED
TUBING
PIPE
CHEMICAL
CONTAINER
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.
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. Unapproved
chemicals can cause excess foaming, poor dispensing,
poor washing, poor draining and damage to seals and
other components inside the oven. DO NOT use any
chemicals in addition to the approved, self-dispensed
cleaner as hazardous interactions can result.
The amount of chemical that is self-dispensed may need
to be adjusted for various reasons, such as for light or
heavy soil or when using alternative approved cleaners.
Contact Hobart service to make any needed parameter
changes to cleaning cycle programming.
Fig. 3
Hose is 6 feet long, can be cut to suit. A #4 or #6 SST
hose clamp is recommended for the tubing at the barbed
tting.
• Cut a 45° angle on the bottom end of the tubing.
• Cut a 3/4" I.D. PVC pipe, not supplied, about 18" long,
with a 45° angle at each end.
• Put the angled end of the tubing inside the pipe
(Fig. 3) so both angled ends extend to the bottom
of the container (Fig. 4). The pipe prevents the
tubing from curling inside the container and prevents
suctioning against the container bottom.
P3 Grease Drain — Hose barb to accept 1/4" ID high-temperature tubing
supplied with machine, 212°F rated.
Hose is 6 feet long, can be cut to suit. A #4 or #6 SST hose clamp is
recommended for the tubing at the barbed tting.
• Connect the grease drain tubing to the barbed tting, P3.
Fig. 4
• Insert the other end of the grease drain tubing into a suitable
grease vessel, not supplied, similar to the one shown in
Fig. 5.
– 6 –
Fig. 5
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 specications on the oven data plate. Refer to the wiring diagram
located inside the side panel.
Connect the power supply to the terminal block as shown on the wiring diagram.
Inspect and check all wiring and terminal connections for tightness and proper routing
away from any moving parts or pinch points. Carefully replace side panels.
E1 – ELECTRICAL DATA
60 HZ KA7E
VO LTAGE PHASE WAT TAG E AMPERAGE
208 1 9,300 42.8
240 1 9,300 37.7
208 3 9,300 24.7
240 3 9,300 21.8
Field wire electrical connection is 11/4" and/or 11/2" knockout (strain relief not supplied).
Stacked units must be wired independently.
SINGLE PHASE CONNECTION — 208V or 240V
11 21 31 12 7 22 23 13 33
1 2 3 4 5 6 7 8 9 10 11 12
TB1
1 2 3
L1 L2 L3
(3W) THREE PHASE CONNECTION — 208V or 240V
11 21 31 12 22 23 13 33
1 2 3 4 5 6 7 8 9 10 11 12
TB1
1 2 3
L1 L2 L3
– 7 –
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).
STEP 2: Place the rotor shaft onto upper notch of support bearing
on the non-drive side of the oven (Fig. 7).
Fig. 7
Fig. 6
STEP 3: Place the drive side of the rotor shaft on the drive arm
support notch (Fig. 8).
STEP 4: Turn the rotor, lining up the square drive slots on
the rotor end plate with the pins on the drive arm
(Fig. 9).
STEP 5: Nudge rotor toward the drive arm. Non-drive end
of rotor shaft falls into the lower portion of support
bearing hub (Fig. 10). Drive end of rotor shaft is driven
into center hole of drive arm.
STEP 6: Rotor is now in normal operating position (Fig. 11).
Fig. 8
Fig. 9
MOTOR DRIVE PINS THROUGH DRIVE
SLOTS ON ROTOR END PLATE
– 8 –
Fig. 11Fig. 10
Hot glass, grease and parts can cause burns. Use care when operating and servicing
ROTATE
the oven.
OPERATOR CONTROLS (Fig. 12)
OPERATION
MESSAGE — Provides instructions.
CENTER
TIME
TEMPERATURE
PROGRAM
1 2 3
4 5 6
7 8 9
CLEAR
START
AM
•
PM
•
F
•
C
•
STEP
1 • 2 • 3 • 4
MANUAL
ENTER
0
STOP
P
CLEAN
CLOCK
•
ADD
5
ADD
5
1 2 3
4 5 6
7 8 9
0
CLEAR
MANUAL
0
ENTER
START
P
STOP
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 .
MANUAL 0 — Enter a MANUAL Program.
ENTER — Accepts time or temperature entry.
START — Begins cooking cycle.
PROGRAM — Enters program mode to modify a cook
program; press P for 3 seconds.
STOP — Stops cycle.
ON
OFF
Fig. 12
SILENCE — Silences beeper.
CLOCK
CLEAN
CLOCK — Sets the clock for time of day.
CLEAN — Initiates AUTOMATIC CLEANING, refer
to pages 26 – 31.
ROTATE — Rotor on/off, pauses cooking cycle;
pauses cleaning cycle.
MAIN POWER SWITCH — Turns oven and controls on or off.
– 9 –
PASS-THROUGH CONTROLS (Fig. 13)
DOOR JAM
SNOOZE — Adds 10 minutes to the previous step of the program
SNOOZE
SILENCE — Silences the beeper.
STOP
STOP — Stops the cycle.
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.
ROTATE — Rotor on/off, pauses cooking cycle; pauses the cleaning
cycle.
ROTATE
Fig. 13
BEFORE FIRST USE
Oven must be burned in to release any odors that might
result from heating the new oven surfaces.
1. Wipe off oven and accessories with a damp or clean
soapy cloth, both inside and outside (Fig. 14). Wipe
clean any soapy residue with a clean damp cloth;
allow to dry.
2. Operate oven at maximum temperature setting of
482°F for 45 minutes. Smoke with an unpleasant
odor will normally be given off during this burn-in
period.
– 10 –
Fig. 14
INITIAL STARTUP
TIME
•
9:25
TEMPERATURE
PROGRAM
P0
•
F
•
C
•
STEP
1 • 2 • 3 • 4
1 2 3
Power On
Idle Mode
Setting the Clock
AM
ADD
PM
5
•
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).
When the oven is rst 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.
The oven's clock is preset at the factory to run two 12-hour cycles
for A.M. and P.M. as standard. The clock can be reprogrammed to
run as a 24-hour clock by your Hobart service technician.
To set the clock, begin from idle mode.
• Press
CLOCK
.
The time display goes blank.
The AM or PM light blinks.
• Enter the time of day (HH:MM) using the number keys.
• Press
CLOCK
to toggle A.M. or P.M. (not necessary if clock is
programmed for 24-hour operation).
• Press
ENTER
to accept a valid entry. The control returns to idle
mode.
4 5 6
7 8 9
MANUAL
0
START
P
CLOCK
ON
OFF
Fig. 15
ENTERCLEAR
STOP
CLEAN
• If a nonvalid value such as 10:95 is in the time display when
is pressed, the beeper sounds twice and the time display goes
blank.
Changing Temperature Readings to Celsius
The oven is preprogrammed for temperatures to read in Fahrenheit
degrees as standard. The oven can be reprogrammed for Celsius
temperature readings by your local Hobart Service ofce.
ENTER
– 11 –
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