Vulcan Hart VRH8 Installation Manual
INSTALLATION &
OPERATION MANUAL
VRH SERIES
OVENS
MODELS:
VRH8 ML-152020
VRH88 ML-152021
For additional information on Vulcan-Hart or to locate an authorized parts
and service provider in your area, visit our website at www.vulcanequipment.com
VULCAN 3600 NORTH POINT BLVD.
DIVISION OF ITW FOOD EQUIPMENT GROUP, LLC BALTIMORE, MD 21222
www.vulcanequipment.com Vulcan ©2014 All Rights Reserved F-41207 (04-14)
VRH SERIES OVENS F-41207 (04-14)
IMPORTANT FOR YOUR SAFETY
THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO INSTALL
ELECTRICAL EQUIPMENT, WHO SHOULD PERFORM THE INITIAL FIELD STARTUP AND ADJUSTMENTS OF THE EQUIPMENT COVERED BY THIS MANUAL.
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER
FLAMMABLE VAPORS OR LIQUIDS IN THE
VICINITYOF THIS OR ANY OTHER APPLIANCE.
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 equipment.
IN THE EVENT OF A POWER FAILURE,
DO NOT ATTEMPT TO OPERATE THIS DEVICE
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VRH SERIES OVENS F-41207 (04-14)
TABLE OF CONTENTS
IMPORTANT FOR YOUR SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PRINCIPLES OF COOK & HOLD OVENS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
BENEFITS OF COOK & HOLD OVENS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
COMPARISON OF COOK & HOLD OVENS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ELECTRICAL REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
MECHANICAL CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
BEFORE FIRST USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
TESTING THE OVEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SHUTDOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
EXTENDED SHUTDOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
STAINLESS STEEL CARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
DOOR GASKET CARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
COOKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
COOKING RACK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
COOKING AND HOLDING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 – 14
RETHERMALIZATION GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
GRAMS – LBS./OZ. CONVERSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
TEMPERATURES CONVERSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
LOCKOUT / TAGOUT PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
SERVICE & PARTS INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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VRH SERIES OVENS F-41207 (04-14)
GENERAL
INTRODUCTION
Vulcan Ovens are produced with quality
workmanship and material. Proper
installation, usage, and maintenance of
your oven will result in many years of
satisfactory performance.
The Vulcan Cook & Hold Oven is more
than just an oven – it’s a “System”;
precisely controlled heat, regulated to
retain ascorbic acid and maximize the
nutritional value, taste and eye-appeal
of food. In this environment, virtually
any food product can be prepared to
delicious perfection in just ONE oven!
“System” food preparation eliminates
the need for multiple ovens with
duplicate features.
This manual is provided to assist
persons responsible for the operation
and maintenance of the oven with a
simple, but comprehensive understanding of its proper use. We
recommend that you thoroughly read
this entire manual and carefully follow all
of the instructions provided prior to
placing the oven into operation.
As with any piece of food service
equipment, this oven system requires a
minimum of care and maintenance.
Recommended procedures are
contained in this manual and should
become a regular part of the operation
of the unit.
The Vulcan Cook & Hold Oven is the
right choice for low temperature food
preparation.
PRINCIPLES OF
COOK & HOLD OVENS
Vulcan Cook & Hold Ovens are
designed and perfected for cooking at a
lower temperature. The principles of
Low Temperature Cooking and Holding
can be summarized into several
objectives: increased product yields,
increased profits from increased
yields, increased moisture retention,
increased tenderization, and
consistency of doneness.
When the Vulcan Cook & Hold Oven
finishes the cooking cycle, it
automatically switches to the hold cycle.
Throughout this manual we recommend
holding temperatures such as 140⁰F
(60⁰C). This temperature refers to the
oven’s hold temperature setting and not
to the internal temperature of the food
being roasted. The internal product
temperature will run below the hold
temperature. (For example: roast beef
held at 140⁰F will be about 130⁰F
internally or medium rare.)
All meat products contain enzymes.
These enzymes perform the
important function of tenderizing the
meat when they reach temperatures
of 100⁰F (38⁰C) to 140⁰F (60⁰C). As
these enzymes are heated, they break
down the connective tissue that is
inherent in all red meat products.
The hold cycle allows this natural
tenderization process to proceed in an
orderly manner. As long as the internal
temperature of the meat does not
exceed 140⁰F, the process will continue.
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VRH SERIES OVENS F-41207 (04-14)
Once the temperature reaches 140⁰F
the process will stop, because the
enzymes will be deactivated.
This tenderization process makes the
meat more flavorful. It is similar to aging
meat before it is sold. The longer the
hold, the higher degree of tenderization.
Each hour of holding is equal to one
day of aging.
BENEFITS OF
COOK & HOLD OVENS
Superior Results: Low temperature
roasting has been recognized as the
best method for preparing meat and
poultry because of increased
tenderness, more even roasting, and a
juicer product.
Increased Sales: You will attract more
customers and have more repeat
business because you are now
producing a superior product in your
market area. All of your products will be
unique, from prime rib and chicken to
BBQ ribs, pork roasts, and even bakery
items!
Reduced Energy Costs: It costs
significantly less to run a Vulcan Cook &
hold Oven instead of a conventional
oven. Also, in most areas, no exhaust
hood is needed.
Reduced Shrinkage of Product: You
can cut your percent of shrinkage from
25 to 30% down to 5 to 10%. This
means more servings to sell to your
customers! The Vulcan Cook & Hold
Oven can pay for itself in just months,
depending on your volume.
Reduced Labor Cost: Your cooks do
not have to come in early to put roasts
in or stay late to take them out of the
oven. Holding banquet foods in a
Vulcan Cook & Hold Oven reduces that
last minute party prep to almost nothing.
COMPARISON OF
COOK & HOLD OVENS
“The Comparison Stops Here” –
more than a catchy slogan, it’s a fact.
Convection ovens, unlike Vulcan Cook
& Hold Ovens, blast high temperature
dry air over the product. The end result
with convection oven cooking is
excessive and unnecessary shrinkage.
Vulcan Cook & Hold Oven Systems:
1. Offer a lifetime heating element
warranty.
2. Provide a natural roasted
brown, caramelized product
without coloring agents.
“You can taste the difference.”
3. Do not require a ventilation
hood. (See pg. 5)
4. Are accurate, plus or minus
5⁰F.
5. Are easy to clean.
6. Have
inside and out.
stainless steel construction
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VRH SERIES OVENS F-41207 (04-14)
INSTALLATION
Before installing, verify that the
electrical service agrees with the
specifications on the rating plate
located on the lower back corner of
the oven. (Fig. 4) If the supply and
equipment requirements do not agree,
do not proceed with unpacking and
installation. Contact your Vulcan
Customer Service Department
immediately.
UNPACKING:
The oven was inspected before leaving
the factory. The transportation company
assumes full responsibility for safe
delivery upon acceptance of the
shipment. Immediately after unpacking,
check for possible shipping damage to
the oven.
If the oven is found to be damaged,
save the packaging material and
contact the carrier within 15 days of
delivery.
Carefully unpack and place in a work
accessible area as near the installation
position as possible.
1. Open oven door(s) and remove
packing material.
2. Check under oven or separate
package for racks, pans, etc.
3. Peel off vinyl protection film from
oven.
CLEANING:
The oven should be thoroughly cleaned
prior to putting into service. Refer to
cleaning instructions in this manual.
LOCATION:
For efficient oven operation, choose a
location that will provide easy loading
and unloading without interfering with
the final assembly of food orders. The
installation location must allow adequate
clearances for servicing and proper
operation.
VRH88
The VRH88 oven is simply two (2)
VRH8 ovens stacked on top of each
other. One (1) oven will come with a
caster kit and a stacking assembly on
top. The oven without casters is
placed inside the stacking assembly.
VENTILATION HOOD
REQUIREMENTS
Some local State Codes require the use
of a ventilation hood for equipment
operating in excess of 250⁰F. Many will
allow operation of Rethermalization
Ovens at lower temperatures. Please
contact a Service Agency to modify this
parameter, if needed to meet local State
Codes.
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VRH SERIES OVENS
ELECTRICAL REQUIREMENTS
ELECTRICAL CODES & STANDARDS:
The oven must be installed in
accordance with:
In the United States of America:
1. State and Local Codes.
2. National Electrical Code, ANSI/
NFPA-70 (latest edition.) Copies
may be obtained from: The
National Fire Protection
Association, 1Batterymarch Park,
Quincy, MA 02269.
1-617-770-3000 www.nfpa.org
In Canada:
1. Local Codes.
2. Canadian Electrical Code, CSA
C22.1 (latest edition.) Copies
may be obtained from: The
Canadian Standard Association.
www.csa.ca
F-41207 (04-14)
ELECTRICAL CONNECTIONS:
The oven is factory wired for single
phase 208/240 volt or three phase
operation. All ovens are equipped with
a 6 foot cord and NEMA 6-15, 6-30, 650, or a 15-30 plug as standard
equipment. (Fig. 3)
.
(Fig.3)
Refer to wiring diagrams and
Specification Chart in the back of this
manual.
The cord and plug supplied is a suitable
durable cord with a proper strain relief.
SERIAL DATA PLATE
(Fig. 4)
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VRH SERIES OVENS F-41207 (04-14)
OPERATION
CONTROLS
The Oven and its parts
are hot. Be very careful when operating,
cleaning, or servicing the oven.
All operating controls are located on the
front Control Panel(s). The oven is
supplied with individual operating
controls for each oven cavity.
POWER
THERMOMETER COOKING TIME ON / OFF
KNOB SWITCH
COOKING COOKING HOLDING HOLDING
TEMP. MODE MODE TEMP.
KNOB LIGHT LIGHT KNOB
Thermometer: Indicates the interior
temperature of the oven.
Cooking Time Knob: Sets the desired
cooking time from ½ hour to 12 hours.
Power ON/OFF Switch: Turns the
oven On or Off.
Cooking Temperature Knob: Sets the
desired cooking temperature.
Cooking Mode Light: Indicates oven is
in Cooking Mode.
Holding Mode Light: Indicates oven is
in Holding Mode.
Holding Temperature Knob: Sets the
desired holding temperature.
BEFORE FIRST USE
The Oven and its parts
are hot. Be very careful when operating,
cleaning, or servicing the oven.
1. Thoroughly clean the oven
before initial use. Please refer
to cleaning instructions in this
manual.
2. Test the oven to verify that the
oven operates normally. Please
refer to “Testing The Oven”
procedure in this manual.
TESTING THE OVEN
The Oven and its parts
are hot. Be very careful when operating,
cleaning, or servicing the oven.
Before using the oven for the first time,
verify that the oven operates normally.
1. Check that the oven is connected
to the correct power source.
2. Set the COOKING TIME knob
to 0.
3. Turn the HOLDING TEMP-
ERATURE knob to 140⁰ F.
4. Set Power ON/OFF Switch to
ON position.
5. Check that the Oven Circulating
Fan(s) are running.
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VRH SERIES OVENS F-41207 (04-14)
6. Check that the Holding
Temperature Indicator Light is
illuminated.
Each Oven is equipped with cooling
fans. The cooling fans may not operate
when the oven is first turned on. The
cooling fans operate only when the
thermostat, to which they are
connected, requires it.
7. Set the COOKING TIME knob
to 2 hours. The Holding
Temperature Indicator Light will
go out and the Cooking
Temperature Indicator Light will
illuminate.
8. Turn the COOKING TEMP-
ERATURE knob to 250⁰ F.
Check the interior rear of the
oven cavity to determine that the
oven is heating.
9. Turn the COOKING TIME KNOB
to 0 and set the HOLDING
TEMPERATURE knob at 250⁰ F.
10. Check that the Cooking
Temperature Indicator Light has
gone out and the Holding
Temperature Indicator Light has
illuminated.
11. Check the interior rear of the
oven to ensure that the oven is
heating. If all the functions
perform satisfactorily, the oven is
ready for operation.
OPERATING INSTRUCTIONS
The Oven and its parts
are hot. Be very careful when operating,
cleaning, or servicing the oven.
1. Turn Cooking temperature
knob to desired Cooking
temperature.
2. Set Cooking timer knob(s) to
desired cooking time to include
30 to 60 minute preheat time.
3. Turn Holdi ng Temperature knob
to desired holding temperature.
4. Turn On/Off Switch to ON
position. On/Off indicator Light
and Holding Temperature Light
will illuminate.
When the oven reaches the desired
cooking temperature it is ready for use.
Keep the oven door closed during the
preheating cycle.
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VRH SERIES OVENS F-41207 (04-14)
SHUTDOWN
The Oven and its parts
are hot. Be very careful when operating,
cleaning, or servicing the oven.
1. Turn Holdi ng Temperature knob
and Cooking Temperature
knob counter-clockwise until
they stop at the Off position..
2. Open door slightly to allow
ventilation and cool down period.
This is to allow oven to
properly cool down so
components are not
damaged.
Wait 15 minutes before turning
On/Off Switch to OFF because the
cooling fans need to operate during the
cool-down period.
3. Turn On/Off Switch to OFF
position.
The cooling fans will automatically turn
off when the proper cool-down
temperature is reached.
EXTENDED SHUTDOWN
The Oven and its parts
are hot. Be very careful when operating,
cleaning, or servicing the oven.
Perform the following procedure to shut
down the oven for an extended period of
time.
1. Perform the SHUTDOWN
procedure.
2. Unplug the oven.
3. Thoroughly clean the oven
according to the cleaning
procedures in this manual.
4. Leave the door(s) slightly open
to allow ventilation and
preservation of the gasket(s).
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VRH SERIES OVENS F-41207 (04-14)
MAINTENANCE
CLEANING
The Oven and its parts
are hot. Be very careful when operating,
cleaning, or servicing the oven.
Always unplug
electrical power supply before
cleaning.
Avoid splashing water into upper
areas of the oven to prevent damage
to electrical components or
connections.
Never spray the unit with a hose.
Never use harsh chemicals or
abrasive pads to clean the oven.
DAILY:
1. Unplug electrical power supply.
2. Allow oven to go through cool down period before cleaning.
3. Remove the Interior Side Racks
4. Take the Interior Side Racks to a
sink or dishwasher for a thorough
cleaning. Use a mild soap and
water solution to clean these
items.
5. If necessary, clean the interior of
the oven with a damp cloth.
Wipe dry with a soft dry cloth.
6. Reassemble oven.
7. Clean the exterior of the oven
with a clean damp cloth.
HEAVY-DUTY CLEANING:
For heavy-duty cleaning, use warm
water, a degreaser, and a soft cloth.
Never rub in a circular motion. Always
rub gently in the direction of the steel
grain. Rinse thoroughly and wipe dry
with a soft cloth.
STAINLESS STEEL CARE
CLEANING:
Stainless Steel contains 70 – 80% iron,
which will rust if not properly maintained.
Stainless Steel also contains 12 – 30%
chromium, which forms an invisible
passive, protective film that shields
against corrosion.
If the protective film remains intact, the
stainless steel will remain intact.
However, if the film is damaged, the
stainless steel can break down and rust.
PREVENTIVE CARE:
To prevent stainless steel breakdown, follow these steps:
1. Never use any metal tools,
scrapers, files, wire brushes,
or scouring pads.
2. Never use steel wool – which
will leave behind particles that will
rust.
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VRH SERIES OVENS F-41207 (04-14)
3. Never use acid-based or
chloride containing cleaning
solutions – which will break
down the protective film.
4. Never rub in a circular motion.
Always rub gently in the direction
of the steel grain.
5. Never leave any food products
or salt on the surface. Many
foods are acidic. Salt contains
chloride.
PRESERVING & RESTORING:
Special stainless steel polishing
cleaners can preserve and restore the
protective film.
Preserve the life of stainless steel with a
regular application of a high-quality
stainless steel polishing cleaner, as a
final step to daily cleaning.
If signs of breakdown appear, restore
the stainless steel surface. First,
thoroughly clean, rinse, and dry the
surface. Then, on a daily basis, apply a
high-quality stainless steel polish
according to manufacturer’s instructions.
HEAT TINT:
Darkened areas, called “heat tint,” may
appear on stainless steel exposed to
excessive heat. Excessive heat causes
the protective film to thicken. This is
unsightly, but is not a sign of permanent
damage.
To remove heat tint, follow the routine
cleaning procedure. Stubborn heat tint
will require heavy-duty cleaning. To
reduce heat tint, limit the exposure of
equipment to excessive heat.
DOOR GASKET CARE
DOOR GASKET:
At least once a week, thoroughly check
the door gasket for damage/wear. A
damaged gasket can cause inefficient
and unsatisfactory operation of the
oven.
If the gasket requires cleaning:
1. Gently wash gasket using a
moist cloth, a mild detergent
solution, and warm water.
2. Rinse with a fresh cloth
moistened in warm water to
remove all traces of detergent.
3. Gently wipe dry with a clean dry
cloth.
Never apply food oils, or petroleum
lubricants directly to the gasket(s).
Petroleum based solvents and
lubricants will reduce the gasket’s life.
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