Groen Vortex VRC-3E User manual

SERVICE MANUAL
IMPORTANT INFORMATION, KEEP FOR OPERATOR
This manual provides information for:
PART NUMBER 145702, REV. C (01/07)
1055 Mendell Davis Drive
Jackson, MS 39272
888-994-7636, fax [phone]
groen.com
MODELS VRC-3E
& VRC-6E Domestic
VORTEX100 ®
CONNECTIONLESS
STEAMER
· Self Contained
· Electric Heated
· Capacity: VRC-3E=3 Steamer Pans Per Cavity
VRC-6E=6 Steamer Pans Per Cavity
Information contained in this document is known to be current and accurate at the time
of printing/creation. Unified Brands recommends referencing our product line websites,
unifiedbrands.net, for the most updated product information and specifications.

PART NUMBER 145702, REV. C (01/07)
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2
Table of Contents
INTRODUCTION
OPERATION
DIAGNOSTICS / TROUBLESHOOTING
INSTALLATION, CLEANING
AND TESTING
Page
1.1 THE GROEN SERVICE CONCEPT .......................................................................................... 5
1.2 THE GROEN CERTIFIED SERVICE.......................................................................................... 5
1.3 WARRANTY AND NON-WARRANTY REPAIRS .....................................................................
..................................................
. 5
1.4 SAFETY ............................................................................................................................... 5-6
1.5 GLOSSARY OF TERMS ......................................................................................................... 6
1.6 TOOLS AND SUPPLIES ......................................................................................................... 6
1.6.1 Reqired Tools .......................................................................................................... 6
1.7.1 Technical Bulletins ......................................................................................................... 7
1.6.2 Recommended Instruments...................................................................................... 6
1.6.3 Helpful Hardware .................................................................................................... 6
1.6.4 Recommended Supplies ........................................................................................... 7
1.7 HOW TO USE THIS MANUAL ............................................................................................... 7
2.1 CONTROLS.......................................................................................................................... 9
2.2 OPERATING PROCEDURE .................................................................................................... 10
3.1 INSTALLATION .................................................................................................................... 11-12
3.2 INSTALLATION CHECKLIST .................................................................................................. 13
3.3 CLEANING PROCEDURES .................................................................................................... 13-14
4.1 TROUBLESHOOTING PROCEDURES & QUICK REFERENCE 16-19
.................................................................................................................
4.2 VRC CHECKOUT 20
1
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Table of Contents
ASSEMBLY / DISASSEMBLY
Page
5.1 AIR TEMPERATURE PROBE.................................................................................................. 21
5.2 CAVITY VENT ASSEMBLY .................................................................................................... 22
5.3 CONTROL PC BOARD .......................................................................................................... 22
5.4 DOOR REMOVAL/INSTALLATION/ALIGNMENT ..................................................................... 22
5.5 DOOR SWITCH .................................................................................................................... 23
5.6 DOOR REVERSING PROCEDURE .......................................................................................... 23
5.7 DOOR GASKET .................................................................................................................... 23-24
5.8 DOOR SPRING..................................................................................................................... 24
5.9 DOOR LOCKING PIN AND LOCK .......................................................................................... 24
5.10 DRAIN VALVE ASSEMBLY.................................................................................................... 24-25
5.11 FAN .................................................................................................................................... 25
5.12 HEATER ELEMENT............................................................................................................... 25-26
5.13 HI-LIMIT THERMOSTAT........................................................................................................ 26
5.14 LEGS................................................................................................................................... 26
5.15 MOTOR, FAN ASSEMBLY..................................................................................................... 27
5.16 MOTOR, STARTING CAPACITOR.......................................................................................... 28
5.17 PANEL BACK....................................................................................................................... 28
5.18 PANEL LEFT SIDE / RIGHT SIDE ............................................................................................ 28
5.19 PANEL, TOP COVER ............................................................................................................ 28
5.20 REMOTE READING THERMOMETER..................................................................................... 29
5.21 WATER LEVEL FLOAT........................................................................................................... 29
5.22 WATER DRAIN KIT INSTALLATION....................................................................................... 30-31
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PART NUMBER 145702, REV. C (01/07)
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Table of Contents
PARTS IDENTIFICATION • VRC-3E
PARTS IDENTIFICATION • VRC-6E
SPECIFICATIONS • VRC-3E, VRC-6E
Page
6.1 CAVITY VENT ASSEMBLY .................................................................................................... 32
6.2 CONTROL BOARD AND WIRING HARNESSES ...................................................................... 33
6.3 DOOR ASSEMBLY................................................................................................................ 34
6.4 ELECTRICAL COMPONENTS 208/240/240 VOLTS................................................................. 35
6.5 HEATER ELEMENTS.............................................................................................................. 36
6.6 MOTOR ASSEMBLY.............................................................................................................. 37
6.7 FLOAT ASSEMBLY ............................................................................................................... 38
6.8 INTERIOR & EXTERIOR CABINET.......................................................................................... 39
7.1 CAVITY VENT ASSEMBLY .................................................................................................... 40
7.2 CONTROL BOARD AND WIRING HARNESSES ...................................................................... 41
7.3 DOOR ASSEMBLY................................................................................................................ 42
7.4 ELECTRICAL COMPONENTS 208/240/480 VOLTS................................................................. 43
7.5 HEATER ELEMENTS ............................................................................................................. 44
7.6 MOTOR ASSEMBLY ............................................................................................................. 45
7.7 FLOAT ASSEMBLIES ............................................................................................................ 46
7.8 INTERIOR & EXTERIOR CABINET .......................................................................................... 47
GENERAL SPECIFICATIONS.................................................................................................. 48
ELECTRICAL SPECIFICATIONS.............................................................................................. 48
WIRING DIAGRAM .............................................................................................................. 49
LADDER DIAGRAM .............................................................................................................. 50
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INTRODUCTION
1.1 The Groen Service Concept
Since 1907 Groen has been in the business of designing and
manufacturing the finest commercial appliances for the food
service industry. Chefs, cooks and kitchen support personnel
have come to depend upon the quality of construction and
the reliability of operation.
Groen, in turn, depends upon our service centers and their field
service personnel to keep the equipment in top operating condi-
tion. In order to do this, our designs are made with service and
reliability in mind.
Once the Groen equipment is sold, manufactured, delivered and
installed, our reputation is clearly in your hands. As part of our
team, we value your efforts and input to our product design.
We will do all we can to make your job of keeping the equip-
ment in perfect working order as easy as we can. Together, we
will keep our customers satisfied.
1.2 Groen Certified Service
The Vortex100 Connectionless Steamer has been carefully designed
to provide many years of efficient and reliable service. Part of the
quality program is Groen Certified Service. This includes:
• Groen certifies that all equipment delivered to our customers
has been inspected and tested for compliance with the
specifications.
• Groen certifies that all parts required for service and
maintenance will be readily available.
• Groen certifies that this manual will be updated by means of
periodic service bulletins to provide the most up-to-date
information for field maintenance and service personnel.
1.3 Warranty & Non-Warranty Repair
Groen Warranty provisions are clearly presented in the
customer’s Operator Manual.
Certain procedures for the cleaning and/or adjustment
of the Vortex Connectionless Steamer are presented in this man-
ual for reference, but not warranty related.
This non-warranty symbol is used throughout the
manual to tell you which items and activities are
NOT covered by the equipment warranty.
1.4 Safety
The Groen Vortex100 Connectionless Steamer has been designed
from the start with safety in mind. This includes safety to the
operating and maintenance personnel, safety to the facility in
which the equipment is installed and safety to the equipment
itself.
The steamer has been designed to the highest industry standards
and has been certified by the National Sanitation Foundation
Testing Laboratory (NSF) and the Underwriters Laboratory (UL)
to assure strict compliance.
The steamer contains several devices, which are specifically used
to prevent unsafe conditions. If they are disconnected, make sure
they are reinstalled properly and tested before the steamer is
operated.
The safety precautions in this manual are in accordance with
ANSI 535 Standard. Three different signal words alert you to a
hazardous situation: DANGER, WARNING, AND CAUTION
DANGER: The signal word DANGER indicates that a
hazardous situation is about to happen and, if not avoided,
will result in death or serious injury.
• Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
• When you open the steamer door, be very careful to avoid
escaping steam. Steam can cause burns.
• After removing the fan baffle partition, do not put your
hands or other object into the cooking cavity until the fan
comes to a complete stop. Rotating fan blades can cause
severe injury!
PART NUMBER 145702, REV. C (7/06)
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1 1

PART NUMBER 145702, REV. C (01/07)
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INTRODUCTION
WARNING: The signal word WARNING tells you that a
possibly hazardous situation is about to take place which, if not
avoided, could cause death or serious injury.
• Always turn off the steamer power before removing
and partitions or panels.
• Disconnect the steamer from the power source before
performing and internal service work.
CAUTION: The signal word CAUTION warns you of a
hazardous situation which, if not avoided, may result in minor
or moderate injury.
• Steamer may be hot. Take precautions to prevent any contact
with hot surfaces.
• Be sure all interior partitions have been installed before
operating the steamer.
• All steamer operators and service personnel should be
familiar with correct and safe operating procedures.
• Be sure steamer drain is not blocked as this could result in
improper steamer operations.
Two other signal words, not directly related to personal safety,
are also used in this manual: NOTICE and IMPORTANT.
NOTICE is used to alert you to hazards that may result in
component and/or equipment damage.
IMPORTANT is used to highlight an operating or maintenance
tip or suggestion.
1.5 Glossary of Terms
The following abbreviations and terms are used in this manual:
BTU British Thermal Unit
GPM Gallons Per Minute
LED Lighting Emitting Diode
MM Millimeter
NEC National Electric Code
N.P.T. National Pipe Thread
NSF National Sanitation Foundation
PSI Pounds per Square Inch (Pressure)
U.L. Underwriter’s Laboratory, Inc.
1.6 Tools and Supplies
This Section identifies the tools, instruments and supplies which
will be required and useful in the inspection, repair and testing
of the equipment described in this manual.
Most likely many of these tools and supplies are already in your
tool kits and are used in everyday maintenance. Make sure to
use only the specified sealants, compounds and dressings.
CAUTION: Care should be taken in using the correct tool as
indicated. Using the wrong tool may inflict damage to the part
being removed, installed and/or adjusted. Make sure that the
calibrations on instruments are periodically checked for accuracy.
1.6.1 Required Tools
• Screw Drivers: Flat Blade No. 1 and No. 2
• Phillips No. 1 and No. 2
• Socket Wrenches: 1/4” through 7/8” (Magnetic)
• Nutdrivers (metric and inches)
• Open Ended Wrenches: 1/4” through 7/8”
• Pipe Wrenches: 6” and 8” size
• Allen Wrenches: 1/16” through 1/4”
• Slip Joint Pliers: ChannelLock or Equivalent
• Wire Crimpers
1.6.2 Recommended Instruments
• Digital Multimeter: Fluke Model 77
1.6.3 Helpful Hardware
• Extension Mirror
• Screw Starter
• Level: 18” Model
• Fuse Puller
1
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INTRODUCTION
1.6.4 Recommended Supplies
• Pipe Thread Compound: Brand: LACO PipeTite Stik
No. 11176 or equivalent
• Motor Sealant Grease: Bel-Ray
• 2” Aluminum Duct Tape
• Removable Thread Locker:
Locktite Type 242 (Door)
Locktite Type 222 (Exterior)
• Clear Silicone Sealant:
Dow Coming Type 732
• Silicone Heat Sink Compound:
Non-Fluid Oil Corp., Chemplex 1381
• High Temperature Anti-Seize and Lubricating Compound
Bostix NEVER SEEZ NSBT-16
1.7 How To Use This Manual
Read this manual completely before attempting any disassembly
or repairs.
Please note the similarities and differences between the various
models described in the manual.
Before making repairs, you should have knowledge of the
steamer operation as described in the Operations Section of this
manual, and a good understanding of service techniques, as
presented by the Groen Service School.
This service manual should be taken with you on all service calls.
Use the correct tools in accordance with the procedures shown
and use only Groen Certified Replacement Parts when performing
steamer repairs.
1.7.1 Technical Bulletins
Technical bulletins are issued by Groen to provide additional and
specific technical information to this manual. The technical
Bulletin Section of this manual should be used to file all of the
Technical Bulletins sent to you from the factory.
When you receive a Technical Bulletin, insert the bulletin in the
Technical Bulletin Section of this manual, and write a note in the
margin of the page in this manual which is appropriate to the
subject covered by the bulletin.
3
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1 3

PART NUMBER 145702, REV. C (01/07)
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8
TECHNICAL BULLETINS
1
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PART NUMBER 145702, REV. B (7/06)
1.7.1a

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2.1 Controls
Operator controls are on the front right of the unit.
The VRC-3E and VRC-6E control panels have the following
touch pads and indicator lights:
• The ON/OFF rocker switch gets the Vortex ready for use,
or shuts it off.
• The HOLD indicator light shows that the cavity is at holding
temperature.
• The TIMED indicator light stays on when the timer is running.
• The low water float probe signals the ADD WATER indicator
light to illuminate when it’s time to add water.
• The open and closed position of the drain valve allows the
unit to be filled with water or drained.
• The READY indicator light indicates the unit has
• Hour meter records cumulative hours of operation.
• Temperature gauge indicates internal temperature of cavity.
achieved the ready temperature.
The push button operations:
1. In the HOLD mode the steam generator stays at a low boil
or “holding” temperature. Factory set at 160°F.
2. When the TIMED button is pushed set, the TIMED light will illuminate
and can be set by turning the knob. The unit steams until the timer
counts down to zero and goes into hold. At that time the HOLD light
illuminates and a beeper sounds.
3. When the MANUAL button is pushed, the unit steams continuously.
The green MANUAL light will stay illuminated.
4. CANCEL button should be pushed to stop beeping.
OPERATION
PART NUMBER 145702, REV. B (7/06)
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2 1
TIME display
TIMER knob
MANUAL button
and indicator
TIMED button
and indicator
HOLD button
and indicator
CANCEL button
and indicator
FAULT display
ON/OFF
rocker switch
Temperature
gauge
Hour meter
READY indicator
ADD WATER indicator

PART NUMBER 145702, REV. C (01/07)
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2.2 Operating Procedure
2. (When manual filling only) Pour water into the reservoir.
When the water level comes up to the high float the reservoir
is full and 5 beeps will sound and the ADD WATER light
will go off. Close the door. The contactor will turn on
when the low float is satisfied and the door is closed.
3. The contactor can be heard cycling to pulse energy into the
heating elements.The unit will be ready in about 20 minutes.
4. Load food into pans in uniform layers. Pans should be filled
to about the same levels, and should not be mounded.
5. Open the door and slide the pans onto the supports. If you
will only be steaming one pan, put it in the middle position.
Some foods will cause foam. When cooking foods that
foam, such as shrimp, put an empty solid 2” deep pan in
the bottom slot of the pan racks.
6. Close the door and take one of the following steps:
• If you want to steam the food for a certain length of time,
push the TIMED button and set the time with timer knob.
The timer will automatically run the steamer for the set time
and then go into hold. A beeper will sound. Then push CANCEL
to stop the beeping.
• If you want to steam continuously, push MANUAL button. The
green light will illuminate. The unit will continue steaming at
a temperature of 203° F or higher.
• If you want to maintain food at holding temperature push
the HOLD button.
WARNING
When you open the door,
stay away from the steam
coming out of the unit.
the steam can cause burns.
6. To remove pans from cavity, open the door. Remove the
pans from the steamer, using hot pads or oven mitts to
protect your hands from the hot pans.
7. To shut off the unit, push the OFF switch.
8. To drain the remaining water in the water reservoir, move
the drain handle to the OPEN position. The drain pan will
not hold all of the water in the reservoir. Allow water to cool
before draining. Pull drain pan slowly from the unit to avoid
spilling.
sloshing.
WARNING
Do not empty until water is cool.
Empty drain pan. Pan will not hold
all water from the reservoir.
Do not over fill drain pan.
OPERATION
2
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PART NUMBER 145702, REV. B (7/06)
1. Push the ON switch and make sure drain handle is in the
closed position.

PART NUMBER 145702, REV. C (01/07) CALL 888-994-7636 FOR TECHNICAL SUPPORT 11
9KW 10KW 12KW 9KW 10KW 12KW
208 3 15-50P 15-50P 15-50P 15-50R 15-50R 15-50R
240 3 15-30P 15-50P 15-50P 15-30R 15-50R 15-50R
480 3 L16-20P L16-20P CS8165C L16-20R L16-20R CS8169
Hubbel or Hubbel or
Equivalent Equivalent
1Call 1-800/676-9040 for Technical Support 3
INSTALLING, CLEANING AND TESTING
WARNING
GROUNDING INSTRUCTIONS
This appliance must be connected
to a grounded metallic, permanent
wiring system, or an equipment
grounding conductor must be run
with the circuit conductors and
connected to the equipment
grounding terminal on the station.
3.1 Installation and Start-up
CAUTION
DO NOT INSTALL THE UNIT WITHIN
2 INCHES OF A HEAT SOURCE
(SUCH AS A BRAISING PAN, DEEP FAT
FRYER, CHARBROILER, OR KETTLE).
Electrical Supply Connection – Observe all local, national, or
other applicable codes.
Three phrase models of the Vortex100 Connectionless Steamer are
supplied with a cord set ready to be connected to a power
supply. See the chart below for the correct matching receptacle
(not supplied with the unit).
Single phase models are designed to be directly connected (hard
wired) to the electrical supply. Allow sufficient loop in the flexible
conduit to facilitate inspection, servicing, and cleaning.
Branch Circuit Protection
Field Wiring Table
Use copper wire only – insulation rating 90°C
Voltage Phase Rated Current
60 hz only Demand (amps)
VRC-3E VRC-6E
9KW 6.76KW 12KW 10KW 9KW
208 3 25 19 34 28 25
240 3 22 29 25 22
480 3 11 14.4 13
208 1 44 33 58 49 44
240 1 38 50 43 39
Plug & Receptacle Chart
Three Phase Only
Volts Phase Plug Receptacle
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PART NUMBER 145702, REV. C (01/07)
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INSTALLING, CLEANING AND TESTING
Water Connections(s)
No water connection is needed. The water will be poured directly
into the water cavity reservoir.
Make sure that the incoming water connection is made with a 3/4”
N.H. COLD water supply hose. Rigid pipe is not required. The
water pressure should be between 30 and 60 PSIG. Higher
pressures will require the use of a pressure regulator. Make sure
that all connections are tight with no leaks-no matter how small.
NOTICE: The quality of the water is a factor in the proper
performance of the steamer. The water supply should have a
minimum value of 30-40 parts per million of total dissolved solid
(TDS).
Drain Connection
The Vortex100 Connectionless Steamer should be manually
drained to the bottom containment pan supplied by the factory.
If the unit is connected to a drain, do not connect more than
two units to one drain line or pressure from one unit will effect
the second unit.
Steam Vent Assembly Instructions
Remove steam diverter assembly from literature bag which can
be found inside unit. Slide loose end as shown over unit steam
outlet, tighten worm gear clamp with flat head screw driver.
Be sure steam outlet is pointing in the upward position.
(Shown below)
Stacking Units Instructions
Remove drain containment pan from the bottom of unit(s).
Unscrew to remove adjustable legs from base of Vortex unit(s).
Unfasten nuts and bolts on stand platform(s). Place Vortex
unit(s) on stand platform. Align the (4) leg holes with the holes
in the platform. Secure Vortex units(s) to stand platform(s) using
bolts and washers provided with stand, see drawing below.
For double stack units only:
By loosening the left screw and removing the right screw provided,
mount steam exhaust bracket assembly to the back panel of the
top Vortex100 unit as shown in detail “B” of Figure 1 on the next
page. Attach the steam exhaust hose from the bottom Vortex
unit’s steam outlet tube to the top Vortex unit’s steam exhaust
bracket assembly using hose clamps provided as shown in figure
2 on the next page. (Note: Steam exhaust hose may need to be
cut to fit.)
FIGURE 1
FIGURE 2
DETAIL B
SCALE 1 : 1
DOUBLE
STACK
STAND P/N
142363
HOSE
CLAMPS
P/N 073259
HOSE
CLAMPS
P/N 073259
DOUBLE STACK
STEAM
EXHAUST HOSE
DOUBLE STACK
STEAM EXHAUST
BRACKET
ASSEMBLY
P/N 143243
10-32 SCREW
P/N 004173
• Units with Manual Fill
• Units with Auto-Fill
Drain Line Installation
Units with auto-fill or manual with drain kit
The drain line should not be less than:
1-1/2” - for single units
2” (5E) - for double stacked units
There must be a 2” air gap to the (non-pressurized) building
drain. Make sure that the drain is sloped AWAY and DOWN
from the steamer and that there are no obstruction in the line.
Failure to observe these requirements may cause a water trap
in the drain line and produce enough back pressure to prevent
proper cavity draining-resulting in condensate water leaking
from the door. Drain line must not NOT be made of plastic pipe.
It must be able to withstand boiling water.

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3Call 1-800/676-9040 for Technical Support 3
3.2 Installation Checklist
General
_____ Remove all packaging.
_____ Make sure there is a minimum of 2 inches of
free space around the steamer.
_____ Make sure the steamer is level or pitched
slightly to the rear.
_____ Check that the fan is clean and clear of
foreign material.
Electrical Checks
_____ Make sure the steamer is properly grounded.
_____ Verify that the electrical connections conform
to all local codes and the NEC requirements.
_____ Make sure the power supply branch circuit
conforms to the specifications indicated on
the steamer nameplate.
Steamer Door Check
_____ Make sure the door gasket is making good
contact with the cavity frame.
_____ Check that the operators are leaving the door open
when the steamer is shut down overnight or longer.
3.3 Cleaning
To keep your VRC-3E or VRC-6E Connectionless Steamer in
proper working condition, use the following procedure to clean
the unit.
A. Suggested Tools
• Mild detergent
• Stainless steel exterior cleaner such as Zepper
• Cloth or sponge
• Plastic or wood handle brush with soft bristles
• Spray bottle
• Measuring cup
• Nylon pad
• Towels
• Plastic disposable gloves
B. Procedure
Exterior Cleaning
a. Prepare a warm solution of the mild detergent as
instructed by the supplier. Wet a cloth with this solution
and wring it out. Use the moist cloth to clean the outside
of the unit. Do not allow freely running liquid to touch
the controls, the control panel, any electrical part, or on
the side or rear panels.
b. To remove material which may be stuck to the unit use
plastic, wool, a fiber brush, or a plastic or rubber scraper
with a detergent solution.
Interior Cleaning
Clean the unit daily or as residue builds upon the bottom of
the oven cavity.
a. Press OFF to turn the steamer off. Open the door.
b. Drain the water from the unit into the drain pan and
allow the unit to cool before cleaning. (Note: If the cavity
is full of water, the drain pan will not hold the entire
amount and must be emptied more than once.)
c. After the unit has cooled, remove pan and pan racks
from the cavity.
d. Use a mild detergent to wipe down the steamer cavity, the
floats on the inside back panel wall, and the pan racks.
The use of Groen descaler/delimer may be required to
remove heavy scale deposits
e. Rinse the unit to remove detergent and cleaners.
f. Attach pan racks. Unit is ready for use.
INSTALLING, CLEANING AND TESTING
PART NUMBER 145702, REV. B (7/06)

PART NUMBER 145702, REV. C (01/07)
CALL 888-994-7636 FOR TECHNICAL SUPPORT
14
WARNING
Keep water and cleaning solutions
out of controls and electrical
components. Never hose or steam
clean any part of the unit.
Even when the unit has been
shut off, don’t put hands or tools
into the cooking chamber until
the fan has stopped turning.
Don’t operate the unit unless the
removable partition has been put
back in its proper location.
Do not use any acidic cleanser
products to clean the unit.
IMPORTANT
Do not use any metal material (such as metal sponges)
or metal implements (such as a spoon, scraper or
wire brush) that might scratch any stainless steel surface.
Scratches make the surface hard to clean and provide
places for bacteria to grow. Do not use steel wool,
which may leave particles imbedded in the surface which
could eventually cause corrosion and pitting.
INSTALLING, CLEANING AND TESTING
3
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Call 1-800/676-9040 for Technical Support
INSTALLING, CLEANING AND TESTING
Notes
PART NUMBER 145702, REV. B (7/06)

PART NUMBER 145702, REV. C (01/07)
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16
4
TROUBLESHOOTING
4.1 Vortex100 Troubleshooting Procedure
Each test procedure builds on the prior ones. Always start at the beginning of this procedure, and continue until the results indicate a
malfunction. Do not skip steps.
WARNING: Disconnect electrical power before servicing.
Measure input voltage and com-
pare to rating plate.
Check input power to determine
if it is three phase or single phase
Connect electrical power
(circuit breaker or plug)
Input voltage is within 10% of
rated voltage
Steamer wiring matches
incoming power
Panel lights are off.
Red LED on back of control board
flashes about once a second.
Wrong model (voltage) installed
Wrong model ordered. Change
wiring at terminal block to
match incoming power.
No line voltage
Blown 6 amp fuse F1 or F2
480v unit only-torroid
circuit breaker
480v unit only-torroid
transformer
24 volt control transformer circuit
breaker
Control board or relay board
Ribbon connector is not
properly seated
Notify customer
When converting from three
phase to single phase, do not
exceed amperage of breaker or
power cord/plug
Standard test
Standard test
Reset breaker
Measure 480vac in and
208+/- 10%vac out
Measure 208 or 240vac in
and 24vac +/- 20% out
Substitute to test
Check wiring diagramIncorrect wiring
Push ribbon connector into
socket on control board and
relay board
SETUP EXPECTED RESULTS PROBABLE DEFECT TEST or COMMENTS
4
Call 1-800/676-9040 for Technical Support 1
PART NUMBER 145702, REV. B (7/06)
Press on\off switch to ON
Add water to cover high water
(upper) float. Close door
Heartbeat LED Flashes
ADD WATER light goes out
(manual fill only)
Breaker on 24 Volt transformer
24 volt transformer T1
Low or high water float
Reset breaker
Measure 208 or 240vac in and
24vac +/- 20% out
Run sensor diagnostics

PART NUMBER 145702, REV. C (01/07) CALL 888-994-7636 FOR TECHNICAL SUPPORT 17
TROUBLESHOOTING
Factory optional water fill kit.
Close door.
Close door and set timer
to 30 minutes
Look for temperature rise on
the dial temperature guage
Water fills to high water float
Timing display illuminates. After
about 15 minutes the ready light
illuminates and the fan runs
Heats to 200 + degrees in
22 +/- 5 minutes
High water float
Water fill solenoid valve
Incorrect wiring
Start capacitor
Internal thermal protector on
fan motor
Fan Motor
Incorrect wiring
Hi-limit thermostat
Contactor K3
Control or relay board Substitute to test
Relay board
Use sensor diagnostics
Use 02 diagnostic to test valve
Check per wiring diagram
Standard test
Use 07 diagnostic
Door switch Use sensor diagnostic
Measure black to white motor
leads. 35 +/- 20% ohms
Measure orange to brown motor
leads. 35 +/-20% ohms. Red to
blue 42 +/- 20% ohms
Check per wiring diagram
Use sensor diagnostic
Verify 24vac across K3 Coil.
Use 05 diagnostic with power switch
on and lower float up.
Measure amperage through
heater wires.
SETUP EXPECTED RESULTS PROBABLE DEFECT TEST or COMMENTS
4
Call 1-800/676-9040 for Technical Support 3
PART NUMBER 145702, REV. B (7/06)

PART NUMBER 145702, REV. C (01/07)
CALL 888-994-7636 FOR TECHNICAL SUPPORT
18
TROUBLESHOOTING
Look for temperature rise on the
dial temperature guage
Set timer to one minute
Push MANUAL
Heats to 200 + degrees in
22 +/- 5 minutes
No defect found but customer
complaint is that unit is slow
to heat
Timer colon flashes times out,
HOLD light illuminates, and unit
beeps until CANCEL button is
pushed
MANUAL light illuminates and
timer displays dashes
Heater element
Incorrect wiring
Customer may be opening
door frequently to add or
remove food
Line voltage may be low
Not at ready temperature or
door is open
Control board
Incorrect wiring
Control board
Measure amperage for each
leg and compare to the chart
on next page. If amperage is
incorrect, disconnect power,
measure heater resistance (cold),
and compare to the chart on
next page. If resistance
is not within 20% of specified,
replace heater element
Check per wiring diagram
Talk with customer
Measure line voltage
Close door, wait for ready
Substitute to test
Check per wiring diagram
Substitute to test
SETUP EXPECTED RESULTS PROBABLE DEFECT TEST or COMMENTS
CONGRATULATIONS!
The unit is operating correctly.
PART NUMBER 145702, REV. B (7/06)
Call 1-800/676-9040 for Technical Support
4 4

PART NUMBER 145702, REV. C (01/07) CALL 888-994-7636 FOR TECHNICAL SUPPORT 19
5
TROUBLESHOOTING
AMPERAGE / RESISTANCE CHART
ecnatsiseRegarepmAesahP/egatloV/ledoM
* The voltage applied to the unit is 480, but the elements are wired so each operates on 277VAC
VRC-6E 208 Three Phase 34 28 25 10.8 13.0 14.4
VRC-6E 240 Three Phase 29 25 22 14.4 17.3 19.2
VRC-6E 480* Three Phase 14.4 13 19.2 23.0
VRC-6E 208 Single Phase 58 49 44 10.8 13.0 14.4
VRC-6E 240 Single Phase 50 43 39 14.4 17.3 19.2
VRC-3E 208 Three Phase 25 19 14.4 19.2
VRC-3E 240 Three Phase 22 19.2
VRC-3E 480* Three Phase 10.8 77
VRC-3E 208 Single Phase 44 33 14.4 19.2
VRC-3E 240 Single Phase 38 19.2
12KW 10KW 9KW 6.76KW 12KW 10KW 9KW 6.76KW
4
Call 1-800/676-9040 for Technical Support 5
PART NUMBER 145702, REV. B (7/06)

PART NUMBER 145702, REV. C (01/07)
CALL 888-994-7636 FOR TECHNICAL SUPPORT
20
TROUBLESHOOTING
Look for temperature rise on the
dial temperature guage
Set timer to one minute
Push MANUAL
Heats to 200 + degrees in
22 +/- 5 minutes
No defect found but customer
complaint is that unit is slow
to heat
Timer colon flashes times out,
HOLD light illuminates, and unit
beeps until CANCEL button is
pushed
MANUAL light illuminates and
timer displays dashes
Heater element
Incorrect wiring
Customer may be opening
door frequently to add or
remove food
Line voltage may be low
Not at ready temperature or
door is open
Control board
Incorrect wiring
Control board
Measure amperage for each
leg and compare to the chart
on next page. If amperage is
incorrect, disconnect power,
measure heater resistance (cold),
and compare to the chart on
next page. If resistance
is not within 20% of specified,
replace heater element
Check per wiring diagram
Talk with customer
Measure line voltage
Close door, wait for ready
Substitute to test
Check per wiring diagram
Substitute to test
SETUP EXPECTED RESULTS PROBABLE DEFECT TEST or COMMENTS
CONGRATULATIONS!
The unit is operating correctly.
PART NUMBER 145702, REV. B (7/06)
Call 1-800/676-9040 for Technical Support
4 4
4.2 VRC Checkout
1. Apply power to the VRC. On the back of the front-panel control
board, flip the left DIPswitch up to start the diagnostics.
2. The red 7-segment display on the front panel should have some
of its segments lit. If they are not then check the fuse and circuit
breaker on the control transformer. Then check that all har-
nesses are in place and that the connectors are properly seated.
Check for 24 VAC at the secondary of the control transformer.
3. Turn the knob so that the red display shows A1 (Analog 1 – RTD
temperature). The green display should show the approximate
temperature of the RTD probe in the cavity. If it shows a very
small number or zero then the harness connecting the RTD to
the control board is probably shorted to ground. If the number
is very large – around 250 or more – it means the RTD or its
harness is open or disconnected.
4. Turn the knob to A4 (Analog 4 – Line voltage). The green display
should show the approximate line voltage.
5. Turn the knob to b (button). Push each button. The light near the
button should light. Also, check that pushing the top two buttons
makes the bottom two lights go out.
6. Turn the knob to P (Product code). The green display should
show 001 for a standard VRC or 003 for an auto-fill VRC. If any
other number is displayed the ribbon cable connecting the
front-panel control board to the relay board is incorrect.
7. Turn the knob to S (Sensors). As each sensor is activated the
associated green bar will light. If it doesn’t then that sensor or
harness connection is faulty. Refer to this diagram:
8. Lift the hi float and hold it up. The Hi Float bar should light after
a few seconds. Release the float.
9. Lift the lo float and hold it up. The Lo Float bar should light after
a few seconds. Release the float.
10. Close and open the door. The Door Open bar should go out
when the door is closed. Use a magnet to check the door switch
on the other side. The bar should go out when the magnet is
near the door sensor.
11. Push the ON end of the rocker switch. The Power bar should
light. Push the OFF end of the switch. The bar should go out.
12. On the left side of the VRC, under the heater plate at the front,
disconnect one of the terminals on the thermostat closest to
the front panel. The Overtemp bar (the one in the middle of
the display) should light. If the Heater Overtemp bar (the top
one) lights then the wiring to the two thermostats is probably
crossed. Reconnect the terminal. The Overtemp (middle) bar
should go out.
13. Disconnect one of the terminals on the thermostat farthest from
the front panel. The Heater Overtemp (top) bar should light.
Reconnect the terminal. The Heater Overtemp (top) bar should
go out.
14. Turn the knob to O1 (Output 1 - Shutdown). Push the ON (upper)
end of the rocker switch. The large contactor closest to the back
panel should pull in. Push the MANUAL button. The contactor
should drop out.
15. If the VRC is equipped with auto-fill turn the knob to O2 (Output
2 – Fill valve). Push the MANUAL button a few times. The fill
valve should open whenever the button is pushed.
16. Turn the knob to O6 (Output 6 - Heater). Push the ON end of
the rocker switch. Lift the lower float all the way up and hold it
up. Push the MANUAL button a few times. The large contactor
closest to the front panel should pull in whenever the button is
pushed. Check for proper line current on all three phases when
the button is pushed. Note: For the heater to turn on the power
must be on, the lower float must be up, and the overtemp ther-
mostat must be operating properly.
17. Turn the knob to O7 (Output 7 – Fan). Push the MANUAL button.
The fan should run.
18. Turn the knob to O8 (Output 8 – Beeper). Push the MANUAL but-
ton. The beeper should beep.
19. Turn the knob to 88. All lights and all display segments should
light.
20. On the back of the front-panel control board, flip the left DIP-
switch down to start normal VRC operation. The red heartbeat
LED on the back of the control board should blink about once a
second.
21. Perform the normal VRC checkout (add water, check steam
production, etc.).
Diagnostic Switch Summary
A1 Analog 1 – RTD temperature
A2 Analog 2 – RTD millivolts
A3 Analog 3 – Control board temperature
A4 Analog 4 – Line voltage
b Button test
P Product code
S Sensor outputs
Error Codes
1 Lo float changed state while hi float on
2 Hi float changed state while lo float off
3 Cold fill to hi float time exceeded Fatal
4 Hot refill to hi float time exceeded Fatal
5 Controller temperature exceeded Fatal
6 Cavity temperature exceeded Fatal
7 Drain box temperature exceeded Fatal
8 Drain time exceeded
9 RTD is open Fatal
10 RTD is shorted Fatal
11 Control board is too hot Fatal
99 No product code in connecting cable Fatal
Hi Float
Lo Float
Door Open
Power
Heater Overtemp
Overtemp
Sensor LED Bars
O1 Output 1 – Shutdown
O2 Output 2 – Fill valve
O3 Output 3 – Spray valve
O4 Output 4 – Drain valve
O5 Output 5 – Eductor valve
O6 Output 6 – Heater (ON and
low float up)
O7 Output 7 – Fan
O8 Output 8 – Beeper
88 All lights on