Mannhart HGFR Installation Manual
GAS-FLAMED ROTISSERIE OVEN
MODEL
MODEL HGFR
HGFR ML-132078 Natural Gas
ML-132079 Propane Gas
701 S. RIDGE AVENUE
TROY, OHIO 45374-0001
937 332-3000
www.hobartcorp.com
FORM 35504 Rev. A (Mar. 2005)
IMPORTANT FOR YOUR SAFETY
THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO INSTALL GAS
EQUIPMENT, WHO SHOULD PERFORM THE INITIAL FIELD START-UP AND
ADJUSTMENTS OF THE EQUIPMENT COVERED BY THIS MANUAL.
POST IN A PROMINENT LOCATION THE INSTRUCTIONS TO BE FOLLOWED IN THE
EVENT THE SMELL OF GAS IS DETECTED. THIS INFORMATION CAN BE OBTAINED
FROM THE LOCAL GAS SUPPLIER.
IMPORTANT
IN THE EVENT A GAS ODOR IS DETECTED, SHUT DOWN
UNITS AT MAIN SHUTOFF VALVE AND CONTACT THE LOCAL
GAS COMPANY OR GAS SUPPLIER FOR SERVICE.
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE
VAPORS OR LIQUIDS IN THE VICINITY OF THIS OR ANY
OTHER APPLIANCE.
WARNING: IMPROPER INSTALLATION, ADJUSTMENT,
ALTERATION, SERVICE OR MAINTENANCE CAN CAUSE
PROPERTY DAMAGE, INJURY OR DEATH. READ THE
INSTALLATION, OPERATING AND MAINTENANCE
INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR
SERVICING THIS EQUIPMENT.
IN THE EVENT OF A POWER FAILURE, DO NOT ATTEMPT TO
OPERATE THIS DEVICE.
© HOBART CORPORATION 2002, 2005
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CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation Codes and Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Venting Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Leveling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Tether Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Plumbing Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Gas Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Before First Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Set Up Rotisserie Oven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Preheating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Preparing Chickens for Roasting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Manual Cooking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Holding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Programmed Cooking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Holding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Preprogrammed Recipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Modifying a Preprogrammed Recipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Unloading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Monthly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Annually . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Service and Parts Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
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Installation, Operation and Care of
HGFR GAS-FLAMED ROTISSERIE OVEN
SAVE THESE INSTRUCTIONS
GENERAL
The model HGFR Series Gas-Flamed Rotisserie Oven features stainless steel interior and exterior for
ease of cleaning. Infrared ceramic gas burners efficiently roast the product. The rotisserie rotates the
product on spits as it revolves around the rotisserie oven. The product roasts evenly and self-bastes
throughout the cooking process. The drip pan's water bath system in the bottom of the rotisserie oven
adds moisture during roasting, catches the fat drippings (reducing the chance of fire) and facilitates
easy cleanup. This rotisserie oven has been exclusively designed to grill meat products. A see-through
window option is available.
GAS AND ELECTRICAL DATA
Type Manifold Supply Pressure Volts / Hertz / Phase Oven Minimum Circuit Ampacity
of BTU/hr Pressure Amps Maximum Protective Device
Gas Min. Max. AMPS
Natural 116,000 5.5"W.C. 7"W.C. 14"W.C. 120 / 60 / 1 3 15
(1.37 kPa) (1.74 kPa) (3.49 kPa)
Propane 120,000 11"W.C. 12"W.C. 14"W.C. 120 / 60 / 1 3 15
(2.74 kPa) (2.98 kPa) (3.49 kPa)
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INSTALLATION
Prior to installation, verify that the electrical service and gas supply (natural or propane) agree with the
specifications on the machine data plate located on the right side of the rotisserie oven.
LOCATION
WARNING: THE ROTISSERIE OVEN SHOULD NOT BE ACCESSIBLE TO THE CUSTOMER; HOT
GLASS AND PARTS CAN CAUSE BURNS.
The equipment area must be kept free and clear of combustibles. Maintain clearances from combustible
and noncombustible construction of 3" (
the optional glass back, clearance from combustible and noncombustible construction must be 3"
(
7.6 cm) at side and 15" (38.1 cm) from the rear of the rotisserie oven. The installation location must allow
adequate clearances for servicing: 18" (
Adequate clearances must also allow for proper operation of the doors. The rotisserie oven is suitable
for installation on combustible floors. The rotisserie oven must be level for the rotor to operate properly.
The rotisserie oven must be installed so that the flow of combustion and ventilation air will not be
obstructed. The bottom of the rotisserie oven must be kept clear so that the air openings into the
combustion chamber are not obstructed. Make sure there is an adequate supply of air in the room to
allow for that required for combustion of gas at the rotisserie oven burners.
7.6 cm) at the sides and rear. If rotisserie oven is equipped with
46 cm) is recommended when used with leveling feet.
INSTALLATION CODES AND STANDARDS
In the United States, the gas rotisserie oven must be installed in accordance with: 1) State and local
codes; 2) National Fuel Gas Code, ANSI-Z223.1 (latest edition), available from American Gas
Association, 1515 Wilson Boulevard, Arlington, VA 22209; 3) ANSI/NFPA 96,
Cooking Equipment
(latest edition), available from National Fire Protection Association, Batterymarch
Vapor Removal from
Park, Quincy, MA 02269; and 4) National Electrical Code, ANSI/NFPA-70 (latest edition).
In Canada, the gas rotisserie oven must be installed in accordance with: 1) Local codes; 2) CAN/
CSA149.1,
Natural Gas and Propane Installation Code
(latest edition); and 3) Canadian Electrical
Code, Part 1, CSA Standard C22.1 (latest edition).
VENTING REQUIREMENTS
Refer to
Vapor Removal from Cooking Equipment
, NFPA 96 (latest edition). The rotisserie oven cannot
be directly vented to a gas flue or exhaust. It should be operated under an exhaust hood that extends
at least 6" (
15.2 cm) beyond the rotisserie oven's sides. Clearance above the rotisserie oven flue should
allow the products of combustion to escape without interfering with heat circulation in the rotisserie
oven.
UNPACKING
Immediately after unpacking, check the rotisserie oven for possible shipping damage. If the rotisserie
is found to be damaged, save the packaging material and contact the carrier within 15 days of delivery.
Remove all vinyl paper from the stainless steel surfaces on the interior and exterior of the rotisserie
oven. Remove all tape from the glass and metal surfaces.
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ASSEMBLY
PL-41689-1
CERAMIC LOGS
IGNITOR BOX
Carefully remove and inspect all loose parts packed with the rotisserie oven, including the following:
Overflow Tube (1) Skim Tube (1) Ceramic Logs (4)
Removable Rear Panel (1) Door Handle Knobs (2) Wire Rack (1)
Unwrap foot pedal switch and place on floor.
Screw the door handle knobs onto the door handle rods and tighten them firmly (Fig. 1).
Hang the upper edge of the removable hanging panel from the hanger strip on the rear wall inside the
rotisserie (Fig. 2). Panel must be flat against rear rotisserie oven cavity wall.
HANGING PANEL
PL-41706 PL-41707
Fig. 1 Fig. 2
Place ceramic logs on log rack. Place logs beginning on
the left side with the right side of each log angled down
(Fig. 3). Place the left ceramic log over the ignitor box to
prevent fat from clogging the burner holes.
Remove the wire rack and install the overflow and skim
tubes, wide side down, in the drains at the bottom of the
rotisserie (Fig. 4); placement is interchangeable. Replace
the wire rack.
Remove the drain handle from its shipping location on the
drain valve and install it properly on the drain valve stem
(Fig. 5).
OVERFLOW TUBE
SKIM TUBE
Fig. 3
DRAIN VALVE HANDLE
DRAIN VALVE STEM
PL-41658-1
Fig. 4 Fig. 5
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PL-41659-1
LEVELING
If the rotisserie oven is equipped with casters (standard), move
the rotisserie oven to its final installed position and lock the front
casters; back casters are nonlocking. Casters are nonadjustable;
therefore, the floor must be level to avoid experiencing cooking
problems.
If the rotisserie oven is equipped with adjustable feet (optional),
move the rotisserie oven to its final installed position. Place a
spirit level on top of the rotisserie oven and turn the adjustable feet
in or out to level the rotisserie oven front to back and side to side.
TETHER CONNECTION
HOLE
FOR
TETHER
When equipped with casters, the gas connection must be made
with a connector that complies with the Standard for Connectors
for Movable Gas Appliances, ANSI Z21.69 (latest edition) or
Connectors for Moveable Gas Appliances, (CAN/CGA-6.16) and
must be made with a quick-disconnect device that complies with
the Standard for Quick-Disconnect Devices for Use With Gas
Fuel, ANSI Z21.41 (latest edition) or Quick-Disconnect Devices
for Use With Gas Fuel (CANI-6.9). Tether the rotisserie oven
using the hole provided on the left side of machine next to the gas
connection (Fig. 6).
If disconnection of the tether is necessary, turn off the gas and
water supplies before disconnecting. After returning the rotisserie
oven to its original position, reconnect the tether before turning the
gas and water supplies back on.
PLUMBING CONNECTION
WARNING: PLUMBING CONNECTIONS MUST COMPLY WITH
APPLICABLE SANITARY, SAFETY AND PLUMBING CODES.
Water Supply Connection (Fig. 7)
The rotisserie oven is equipped with a water bath system in the
bottom of the rotisserie oven. It can be connected to the potable
water supply at the
1
/2" NPT (1.3 cm) supply valve connection. A
flexible connection is recommended to allow for rotisserie oven
movement.
Fig. 6
Fig. 7
WATER
VALV E
PL-41656-1
PL-41690-1
Drain Connection (Fig 8)
For optional permanent connection, a 1
1
/2" NPT (3.8 cm) drain
connection is also provided. If connecting to a drain, make sure
the drain is connected to a grease trap.
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DRAIN CONNECTION
PL-41655-1
Fig. 8
ELECTRICAL CONNECTION
WARNING: ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE
APPLICABLE PORTIONS OF THE NATIONAL ELECTRICAL CODE AND/OR OTHER LOCAL
ELECTRICAL CODES.
WARNING: THIS MACHINE IS PROVIDED WITH A THREE-PRONG GROUNDING PLUG. THE
OUTLET TO WHICH THIS PLUG IS CONNECTED MUST BE PROPERLY GROUNDED. IF THE
RECEPTACLE IS NOT THE PROPER GROUNDING TYPE, CONTACT AN ELECTRICIAN.
Do not plug in until after the gas connection has been made and checked for leaks.
GAS CONNECTION
All gas supply connections and any pipe joint compound must
be resistant to the action of propane gas. Codes require that
a gas shutoff valve be installed in the gas line ahead of the
rotisserie oven; use the valve provided. A gas pressure
regulator is supplied with the rotisserie oven.
Connect the rotisserie oven to a 1" (
2.5 cm) gas supply line
(Fig. 9). Make sure the pipes are clean and free of obstructions,
dirt and piping compound. Connecting the rotisserie oven to
a smaller gas supply line is not recommended because this
will reduce the effectiveness of the burners or cause improper
operation.
WARNING: PRIOR TO STARTING, CHECK ALL JOINTS IN
THE GAS SUPPLY LINE FOR LEAKS. USE SOAP AND
WATER SOLUTION. DO NOT USE AN OPEN FLAME.
For natural gas, adjust the gas pressure regulator to provide a manifold pressure of 5.5" W.C. (
The minimum supply pressure for natural gas is 7" W.C. (
1.74 kPa); maximum is 14" W.C. (3.49 kPa).
For propane, adjust the gas pressure regulator to provide a manifold pressure of 11" W.C. (
The minimum supply pressure for propane is 12" W.C. (
2.98kPa); the maximum is 14" W.C. (3.49kPa).
GAS
PRESSURE
REGULATOR
GAS
CONNECTION
Fig. 9
PL-41691-1
1.37 kPa).
2.74kPa).
The rotisserie oven and its individual shutoff valve must be disconnected from the gas supply piping
system during any pressure testing of that system at test pressures in excess of
1
/2 psi (3.45 kPa).
The rotisserie oven must be isolated from the gas supply piping system by closing its individual manual
shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or
less than 1/2 psi (3.45 kPa).
BEFORE FIRST USE
WARNING: DISCONNECT ELECTRICAL POWER BEFORE CLEANING.
Clean and sanitize the rotisserie oven inside and outside with warm, soapy water. Rinse thoroughly
and wipe dry with a soft, clean cloth. Clean all spits and accessories with warm, soapy water; rinse
thoroughly and wipe dry.
Care must be taken to ensure the burners and ignitors do not get wet. Refer to Cleaning, pages 18
through 20.
Before using the rotisserie oven for the first time, it must be "burned in" to release any odors that might
result from heating the new surfaces in the rotisserie oven. Remove all vinyl paper and operate the
rotisserie oven empty at the maximum temperature for 1 hour. Smoke with an unpleasant odor normally
will be given off during this burn-in period.
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