Vulcan-Hart VHU18 User manual

VULCAN 3600 NORTH POINT BLVD.
DIVISION OF ITW FOOD EQUIPMENT GROUP, LLC BALTIMORE, MD 21222
800-814-2028
www.vulcanequipment.com Vulcan ©2016 All Rights Reserved F-47668 (02-18)
INSTALLATION &
OPERATION MANUAL
VHU18
INSULATED HUMIDIFIED HOLDING &
PROOFING CABINET

VHU18 INSULATED HUMIDIFIED HOLDING & PROOFING CABINET F-47668 (02-18)
1
IMPORTANT FOR YOUR SAFETY
THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO INSTALL
ELECTRICAL EQUIPMENT, WHO SHOULD PERFORM THE INITIAL FIELD START-
UP 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 VICINITY
OF 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

VHU18 INSULATED HUMIDIFIED HOLDING & PROOFING CABINET F-47668 (02-18)
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TABLE OF CONTENTS
IMPORTANT FOR YOUR SAFETY
1
INTRODUCTION
3
INSTALLATION
3
ELECTRICAL REQUIREMENTS
5
OPERATION INSTRUCTIONS
6
CLEANING
8
REFERENCE AND
TROUBLESHOOTING
9
SERVICE & PARTS I
NFORMATION
10

VHU18 INSULATED HUMIDIFIED HOLDING & PROOFING CABINET F-47668 (02-18)
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INTRODUCTION
The VHU18 Insulated Humidified Holding and Proofing Cabinet provides an efficient means of
holding bulk prepared foods at proper serving temperatures while maintaining food quality.
Advanced sensing technology maintains an ideal combination of temperature and humidity,
without complicated controls.
Vulcan Heated Holding Cabinets are produced with quality workmanship and material. Proper
installation, usage, and maintenance of your cabinet will result in many years of satisfactory
performance. It is suggested that you thoroughly read this entire manual and carefully follow all
provided instructions.
INSTALLATION
Before installing, verify that the electrical service agrees with the specifications on the Serial
Data plate (Fig. 3) located on the back or side of cabinet.If the supply and equipment
requirements do not agree, do not proceed with unpacking and installation. Contact your
Vulcan-Hart Customer Service Department immediately.
UNPACKING:
The Cabinet 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 cabinet.
If the cabinet is found to be damaged, take photos of the damage (including box), save
the packaging material, and contact the carrier within 5 days of delivery.
Carefully unpack and place in a work accessible area near the installation location.
1. Open door and carefully remove packaging materials and components for this unit.
2. Peel off any vinyl protection film that may be present on sheet steel.
3. Ensure all component parts for this unit are accounted for:
Qty
Part
Name
Description
20 Universal Tray Slides Wire racking to be placed in cabinet uprights
at desired levels
1 VHU Interior Pan Special Stainless Steel Pan with High temp
black coating on bottom; gets placed in
opening
above
heating element
1 VHU Exterior Pan Standard Stainless Steel Pan located under
unit for wat
er collection
4. Remove universal tray slides from box. Install tray slides in the uprights at desired
levels. Make sure the hook on the end of the tray slide is up (Fig. 1). To prevent tilting,
tray slides should be placed in matching positions on both sides. For this unit, the
bottom 2 holes (levels) closest to Interior pan are not intended for use.

VHU18 INSULATED HUMIDIFIED HOLDING & PROOFING CABINET F-47668 (02-18)
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Fig. 1, Tray slide install
5. Install both pans by placing the VHU Interior Pan (black coated underside) in the
opening above the heating element, and by sliding the VHU Exterior Pan into the
underneath position. (Fig. 2)
Fig. 2, Pan installation
6. Ensure cabinet interior and exterior are clean prior to use. Whenever cleaning this
cabinet, do so using non-corrosive food grade cleaning solutions. Never use harsh
chemicals or abrasive pads.
7. Choose a cabinet location that will provide easy loading and unloading without
interfering with kitchen operations. The installation location must be level and allow
adequate clearances for proper operation and servicing.
8. The cabinet is ready for use and can be energized in accordance with the Electrical
Requirements section.
Interior pan
Exterior pan

VHU18 INSULATED HUMIDIFIED HOLDING & PROOFING CABINET F-47668 (02-18)
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ELECTRICAL REQUIREMENTS
ELECTRICAL CODES & STANDARDS:
The cabinet 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, 1 Batterymarch 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
ELECTRICAL CONNECTIONS:
The cabinet is factory wired for 110/120 volt, single phase operation. This cabinet is equipped
with an 8-foot cord and NEMA 5-15 plug as standard equipment. The cord and plug supplied is
a suitable durable cord, provided with a proper strain relief.
All cabinets are equipped with a three-prong plug. It is imperative that
this plug be connected into a properly grounded three-prong receptacle. If the receptacle
is not the proper grounding type, contact an electrician. Do not remove the grounding
prong from this plug.
Verify that the power source matches the Serial Data Plate (back or side of cabinet) and
plug configuration before the connection is made (Fig. 3).
Fig. 3 – Serial Data Plate example, not representative of all units

VHU18 INSULATED HUMIDIFIED HOLDING & PROOFING CABINET F-47668 (02-18)
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OPERATION INSTRUCTIONS
The Cabinet and its parts are hot. Be very careful when operating,
cleaning, or servicing the cabinet. Heating elements are located at the bottom of the unit.
Touching the floor of the internal cavity or water pan can result in injury.
CONTROLS – Must read and familiarize before operation.
1. ON/OFF Rocker Switch
2. Temperature Display and Control Knob
•Shows Temperature set point selected by operator (See Start Up).
•Upon pressing knob once, reading of cabinet interior temperature will display for
4 seconds, then switch back to showing set temperature.
3. Humidity Display and Control Knob
•Shows Relative Humidity set point, either the default for that temperature, or
specific humidity set point selected by operator (See Start Up).
•Upon pressing knob once, reading of cabinet interior relative humidity will display
for 4 seconds, then switch back to showing set humidity.
4. Vent Fan and Guard
•Provides air intake for maintaining dry and cool controls.
•Leave at least a 1-inch clearance on all sides to prevent premature failure of
controls from humidity.
•Do not allow liquids into the vent.
2
1
3
4

VHU18 INSULATED HUMIDIFIED HOLDING & PROOFING CABINET F-47668 (02-18)
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START UP
1. Fill VHU Interior pan ½ – ¾ full of clean water (1 – 1.5 gallons). Use hot water to improve
preheat times. The max capacity of the water pan is 2 U.S. gallons or 7.5 liters. NOTE:
Additives such as oils, flavor enhancers, water softeners, or any products other than
clean water are NOT permitted for use in this pan.
2. Turn Cabinet ON using the rocker switch. The rocker switch light will illuminate red.
Unless it is the first time of use, Temperature and Relative Humidity set points will
automatically set to the last operator selections prior to Shut Down.
3. Use the Temperature Control Knob to select desired temperature (cabinet temperature
range is 80˚ – 190˚ F). The relative humidity setting will adjust on its own to the
Automatic relative humidity setpoint based on the set temperature.
4. If an alternate humidity is desired, use the humidity knob to change the relative humidity
setting. The Minimum relative humidity setpoint is 25% RH. The Maximum relative
humidity setpoint is variable based on temperature setpoint. A table providing Automatic,
Minimum, and Maximum Relative humidity settings can be found in the Reference and
Troubleshooting section.
PREHEAT
When Proofing:
•Wait approximately 20 minutes for the cabinet to preheat from room temperature.
•Current Cabinet relative humidity may go above the set relative humidity.
When Holding cooked food:
•Depending on the temperature set point, allow up to 45 minutes for the cabinet to
preheat from room temperature. (See Controls section for how to check interior
temperature and relative humidity readings)
•It is possible that the cabinet’s relative humidity may go above the set relative humidity
during the heat up phase.
•Only load pans with hot, cooked food into cabinet.
DURING OPERATION
1. The VHU Interior water pan will be extremely hot during operation. Refilling of this pan
during operation should be carried out by bringing water to the pan by using a pitcher or
other pouring device. DO NOT attempt to remove the Interior water pan during cabinet
operation as this could result in injury.
2. Refill the interior water pan approximately every 3 hours with 1 gallon of water, during
high volume use. The VHU Interior pan should be ¼ - ¾ full at all times.
3. Water drips into a secondary pan (VHU Exterior Pan) underneath the unit. This pan of
water should be emptied each time the internal water pan is filled. Caution, this may be
hot.

VHU18 INSULATED HUMIDIFIED HOLDING & PROOFING CABINET F-47668 (02-18)
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END OF OPERATION – SHUT DOWN
1. Turn the unit OFF using rocker switch.
2. Leave the door in an open position (at least 2" gap) for at least 30 minutes to remove
moisture and cool down. If accelerated drying is needed, the operator can do so using a
soft cloth and with proper hand and arm protection. The bottom will be extremely hot and
must be avoided until cool.
3. After cool down, wipe out any remaining moisture with a soft dry cloth.
4. Remove any food debris that accumulated on the bottom on the unit.
NOTE: This cabinet is not intended to reheat or cook food. Food must be cooked and at
a safe serving temperature prior to being placed in the cabinet.
NOTE: The operator should always monitor the food product to ensure that it remains at
a proper temperature.
CLEANING
Do NOT spray or hose down the unit. Sensitive electronics can be
damaged.
Never use harsh chemicals or abrasive pads to clean the cabinet.
PERIODICALLY AS NEEDED:
1. When cooled to room temperature, empty VHU Interior pan.
2. Lightly clean VHU Interior pan and cabinet interior with non-corrosive food grade
cleaning solution and water.
3. Dry with a soft cloth.
4. If removing the Interior Universal Tray Slides (wire racks) for cleaning, we recommend
washing by hand to avoid damage to rack coating. Scratches and abrasion to any metal
surfaces can lead to rusting.
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. The VHU interior pan and interior floor of the Cabinet are especially
susceptible. The VHU interior pan does contact the element to improve heat transfer.

VHU18 INSULATED HUMIDIFIED HOLDING & PROOFING CABINET F-47668 (02-18)
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REFERENCE AND TROUBLESHOOTING
Symptoms Possible causes Remedy
Cabinet not operating
Cabinet not connected to
power source Connect cabinet to power source
No power Check circuit breaker
Check GFCI
GFCI or Ground Fault
Circuit Indicator tripped
Moisture issue Dry moisture problem. Find and fix root
cause
horted element Contact Authorized ervice Provider
Pinched/damaged wire Contact Authorized ervice Provider
Damaged power cord Contact Authorized ervice Provider
Cabinet is connected to
power source, switch is
ON, circuit breaker is
ON, but cabinet is not
heating
Defective: element, control,
etc. Contact Authorized ervice Provider
Cabinet does not heat
properly
VHU Interior Pan not installed
correctly.
Use pecial tainless teel Pan with High
temp black coating on bottom. Pan must
be ¼ - ¾ full during operation
Door not shut properly or
needs adjustment
Check door seal and contact Authorized
ervice Provider
Defective: element, control,
etc. Contact Authorized ervice Provider
Fan not operating
properly
Fan connection broken Contact Authorized ervice Provider
Defective fan
E01 or E03 displayed Issue with sensor
Try the following:
1. Turn Cabinet OFF then ON
2. Follow: END OF OPERATION – HUT
DOWN instructions
3. Contact Authorized ervice Provider
Knobs not working
Corrosion inside the unit or
mechanical damage to the
encoder
Contact Authorized ervice Provider

VHU18 INSULATED HUMIDIFIED HOLDING & PROOFING CABINET F-47668 (02-18)
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TABLE providing AUTO/MAX/MIN Relative Humidity for each Temperature.
Temperature
(˚F)
Auto-set
Relative
humidity (%)
MAX
Relative
humidity (%)
MIN
Relative
humidity (%)
75
90
95
25
80
90
95
25
85 90 95 25
90
90
95
25
95
90
95
25
100 90 95 25
105
90
95
25
110
90
95
25
115 85 90 25
120
80
90
25
125
75
90
25
130 70 90 25
135
65
90
25
140
60
90
25
145 60 85 25
150 55 80 25
155
55
75
25
160 50 65 25
165 45 60 25
170
40
55
25
175 35 45 25
180 30 40 25
185
30
35
25
190 30 30 25
SERVICE & PARTS INFORMATION
To obtain Service and Parts information concerning this model, and for a complete listing of Authorized
Service and Parts depots refer to our website or call Customer Service.
www.vulcanequipment.com
Customer Service: 800-814-2028
When calling for service, have the model number and serial number available.