Hobart Food Machines HM1600 Installation Manual
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MICROWAVE OVENS
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MODEL HM1600
MICROWAVE OVEN
ML-114794
701 S. RIDGE AVENUE
TROY, OHIO 45374-0001
(937) 332-3000
www.hobartcorp.com
FORM 33971 (10-99)
IMPORTANT SAFETY INSTRUCTIONS
When using electrical appliances, basic safety precautions must be followed, including the following:
WARNING: TO REDUCE THE RISK OF BURNS, ELECTRIC SHOCK, FIRE, INJURY TO PERSONS,
OR EXPOSURE TO EXCESSIVE MICROWAVE ENERGY:
1. Do not use metal utensils in this oven.
2. Read all instructions before using oven.
3. Read and follow the “Precautions to Avoid Possible Exposure to Excessive Microwave Energy”
on the next page.
4. This microwave oven must be grounded. Connect only to a properly grounded outlet. See
Grounding Instructions, page 7.
5. Locate or install this oven only in accordance with the instructions provided.
6. Some items, such as whole eggs or sealed containers, may explode and should not be heated
in this oven. Example: Closed glass jars.
7. Use this microwave oven only for its intended use as described in this manual. Do not use
corrosive chemicals or vapors in this oven. This type of oven is specifically designed to heat,
cook, or dry food. It is not designed for industrial or lab use.
8. As with any appliance, close supervision is necessary when used by children.
9. Do not operate this microwave oven if it has a damaged cord or plug, if it is not working properly,
or if it has been damaged or dropped.
10. This microwave oven should be serviced only by qualified service personnel. Contact your local
Hobart Service Office for examination, repair or adjustment.
11. Do not cover or block any openings on the microwave oven.
12. Do not use this oven outdoors. Do not use this product near water — for example, near a kitchen
sink, in a wet basement, or near a swimming pool, etc.
13. Do not immerse cord or plug in water.
14. Keep cord away from heated surfaces.
15. Do not let cord hang over edge of table or counter.
16. When cleaning surfaces of the door and oven that come in contact when the door is closed, use
only mild, non-abrasive soap or detergent applied with a sponge or soft cloth. Refer to Cleaning,
page 19.
17. To reduce the risk of fire in the oven cavity:
a. Do not overcook food. Carefully attend the oven if paper, plastic, or other combustible
materials are placed inside the oven to facilitate cooking.
b. Remove wire twist-ties from paper or plastic bags before placing the bag in the oven.
c. If materials inside the oven should ignite, keep oven door closed, turn oven off, and disconnect
the power cord, or shut off power at the fuse or circuit breaker panel.
d. Do not use the cavity for storage purposes. Do not leave paper products, cooking utensils, or
food in the cavity when not in use.
PLEASE KEEP THIS MANUAL FOR FUTURE REFERENCE
–2–
PRECAUTIONS
TO AVOID POSSIBLE EXPOSURE
TO EXCESSIVE MICROWAVE ENERGY
1. Do not attempt to operate this oven with the door open since open-door operation can result
in harmful exposure to microwave energy. It is important not to defeat or tamper with the safety
interlocks.
2. Do not place any object between the oven front face and the door, or allow soil or cleaner
residue to accumulate on sealing surfaces.
3. Do not operate the oven if it is damaged. It is particularly important that the oven door close
properly and that there is no damage to the:
a. Door (bent)
b. Hinges and latches (broken or loosened)
c. Door seals and sealing surfaces.
4. The oven should not be adjusted or repaired by anyone except properly qualified service
personnel.
CAUTION
1. Do NOT attempt to tamper with or make any adjustments or repairs to the door, control panel
housing, safety interlock switches or any other part of the oven. Do NOT remove outer panel from
oven. Repairs should only be done by a qualified service person.
2. Do NOT operate the oven when it is empty. The microwave energy will reflect continuously
throughout the oven if no food or water is present to absorb energy.
3. If a fire occurs in the oven, touch the STOP/RESET pad and LEAVE THE DOOR CLOSED.
Disconnect the power cord, or shut off power at the fuse or circuit breaker panel.
4. Do NOT attempt to dry clothes, newspapers or other materials in the oven. They may catch fire.
5. Do NOT use recycled paper products, as they may contain impurities which may cause sparks
and/or fires.
6. Do NOT use newspapers or paper bags for cooking.
7. Do NOT hit or strike control panel. Damage to controls may occur.
8. Pot holders may be needed when removing food from the oven. Heat is transferred from the
hot food to the container.
9. Do NOT store flammable materials next to, on top of, or in the oven. It could be a fire hazard.
10. Do NOT operate the oven without the splatter shield (located in the top of the inner cavity) in
place.
11. Do NOT slide the removable shelf in or out when placing or removing food. This action could
cause damage to the shelf or cause hot food to tip towards the operator.
–3–
TABLE OF CONTENTS
GENERAL ............................................................................................................................................ 5
Radio Interference ................................................................................................................... 5
INSTALLATION................................................................................................................................... 6
UNPACKING ........................................................................................................................... 6
Removal of Protective Film ..................................................................................................... 6
LOCATION .............................................................................................................................. 6
Sealing the Microwave Oven to the Countertop .................................................................... 6
ELECTRICAL CONNECTIONS.............................................................................................. 7
Grounding Instructions............................................................................................................ 7
OPERATION ....................................................................................................................................... 8
CONTROLS............................................................................................................................. 8
Power Level Chart (approximate values) ............................................................................... 9
Factory Preset ......................................................................................................................... 9
Timer Range Limits................................................................................................................. 9
Manual Single Stage Heating............................................................................................... 10
Manual 2 or 3 Stage Heating................................................................................................ 11
Programmed Heating............................................................................................................ 1 2
Programming Memory Pads................................................................................................. 1 3
Programming Memory Pads for 2 or 3 Stage Heating........................................................ 14
Program Lock ........................................................................................................................ 1 5
Program Unlock..................................................................................................................... 15
List Memory ........................................................................................................................... 16
Programming Beep Tone Loudness .................................................................................... 17
Programming Beep Tone Duration ...................................................................................... 17
To Read the Cycle Counter.................................................................................................. 18
Cleaning................................................................................................................................. 19
MAINTENANCE ................................................................................................................................ 19
Replacing a Light Bulb.......................................................................................................... 19
TROUBLESHOOTING...................................................................................................................... 2 0
Failure Codes ........................................................................................................................ 20
Service.................................................................................................................................... 20
–4–
INSTALLATION, OPERATION AND CARE OF
MODEL HM1600 MICROWAVE OVEN
GENERAL
Microwave heat is generated inside the food rather than being conducted through the food as in
conventional methods. Time is used to control the amount of heating that occurs.
Microwave energy is absorbed in proportion to the moisture content of the food. The microwave energy
causes water molecules to vibrate at high speeds resulting in friction (HEAT).
The Model HM1600 produces microwave energy in a magnetron where an electric current is changed
to microwave energy by large magnets. From the magnetron, microwave energy is transmitted to the
oven cavity where it is reflected, transmitted or absorbed.
Microwaves are reflected by metal (interior walls and rotating waveguides located underneath or above
the floor and ceiling) which assures that the microwaves are well distributed within the oven cavity. This
produces even heating or cooking of foods.
Microwaves pass through paper, glass or plastic much like sunlight shining through a window. Because
these substances do not absorb or reflect microwave energy, they are ideal materials for use as food
containers during microwave heating.
Microwaves penetrate the food to about
water, fat and sugar. The excited molecules vibrate at a rate of 2.45 billion cycles per second which
causes friction and produces heat. The internal heating of larger food volumes is done by conduction.
The microwave heat produced in the outer 1
continues to heat by conduction after microwave production has stopped. Microwaves dissipate and
cannot be stored in food.
3
/4 to 11/2 inches deep where they excite molecules, especially
1
/2 inches is conducted to the center of the food. Food
PL-41348
Model HM1600 Microwave Oven
Radio Interference
There is a possibility of a small amount of interference with weak broadcast signals if the microwave
oven is too close to a radio or TV or similar equipment. If interference is present, it may be reduced by:
1) Cleaning the door and sealing surface of the oven; 2) Increasing the separation of the oven from the
receiving device; 3) Using an antenna to obtain stronger signal reception for the receiving device.
–5–
INSTALLATION
UNPACKING
Immediately after unpacking the microwave oven, check for possible shipping damage. If this oven is
found to be damaged, save the packaging material and contact the carrier within 15 days of delivery.
Removal of Protective Film
A blue protective film is used to prevent scratching of the outer case during transportation. Peel the
film from the exterior of the oven before installation or use.
LOCATION
Locate the oven on a smooth, flat and stable surface. There should be no gap between the counter
surface and the bottom of the oven. Do not place the oven in a hot or damp area, i.e., near a gas or
electric range. The microwave oven must not be located above or next to sources of excessive heat
or greasy air. Free airflow around the oven is important. There is a possibility of a small amount of
interference with weak broadcast signals if the microwave oven is too close to a radio or TV.
It is recommended that the microwave oven be located so the housing can be removed for service. The
housing should NOT be removed by anyone except qualified service personnel. A Hobart service
technician is recommended.
Sealing the Microwave Oven to the Countertop (Fig. 1)
When the microwave oven is placed on a countertop, the base must be sealed in accordance with the
National Sanitation Foundation (NSF).
Locate microwave oven on a level countertop surface. Complete the electrical connections.
Thoroughly clean the base of the microwave oven and the countertop area around the oven.
Remove the air filters.
Apply a bead of silicone sealant around the base of the microwave oven. Smooth sealant with a wet
finger or tool to provide a cove seal. Use a small bead of sealant so the filters can be reinstalled.
Reinstall the air filters after the silicone sealant has been allowed to cure.
–6–
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