Carter Hoffmann RTB341 Installation Manual

RTB Series RETHERMALIZATION CABINETS

MODELS: RTB10, RTB16, RTB34, RTB341, RTB281

OWNERS / OPERATORS MANUAL

MANUFACTURED BY:

CARTER-HOFFMANN

1551 McCormick Avenue

Mundelein, IL 60060 USA

Phone: [phone]

Toll Free: 800-323-9793

Fax: [phone]

Email: [e-mail]

READ THIS MANUAL COMPLETELY
BEFORE OPERATING THIS APPLIANCE

IMPORTANT: DO NOT DISCARD THIS MANUAL

This manual is considered to be part of the appliance and is to

be given to the OWNER, MANAGER, or to the person responsi­ble for training operators of this appliance.

RTB341

RTB281

THIS MANUAL IS TO BE UNDERSTOOD BY ALL PERSONS

USING OR INSTALLING THIS APPLIANCE.

Contact Carter-Hoffmann if you have questions regarding instal­lation, operation or maintenance of this equipment.

SAFETY INSTRUCTIONS…….………………………….. 2
INTRODUCTION AND SPECIFICATIONS…………...… 3
UNPACKING, INSPECTION & INSTALLATION……..… 4
INSTALLATION & START UP……………………………. 5
CONTROLLER FEATURES……………………………… 6-7
DAILY OPERATION……………………….………………. 8
CONTROLLER PROGRAMMING INFORMATIO N…….. 9-10
END-USER PROGRAMMING PATH 1724……………… 11-13
MANAGER PROGRAMMING PATH 3228..…………….. 14-20
DAILY CLEANING PROCEDURE………………………… 21-22
TROUBLESHOOTING GUIDE……………………………. 23

SERVICE EXPECTATIONS………….………….……...... 24

WARRANTY STATEMENT……………………....……….. 25

Printed in
The United States of America

TABLE OF CONTENTS

All Rights Reserved

Part Number: 18400-3155
Rev: KBA040111

SAFETY PRECAUTIONS

WARNING: ELECTRIC SHOCK HAZARD

WARNING

All service requiring access to non-insulated components must be performed by
qualified service personnel. Failure to heed this warning may result in severe
electric shock.

CAUTION: ELECTRIC SHOCK HAZARD

Disconnect this appliance from electrical power before performing any
maintenance or service.

CAUTION: BURN HAZARD

Exposed metal surfaces can be hot to the touch and may cause burns.

IMPORTANT SAFETY INSTRUCTIONS

When using electrical appliances basic safety precautions should be followed, including the following:

1) Be familiar with the appliance use, limitations and associated restrictions. Operating instructions must
be read and understood by all persons using or installing this appliance.

2) This appliance must be grounded. Connect only to properly grounded outlet.

3) Use this appliance only for its intended purpose as described in the manual.
a. This equipment is specifically designed to hold pre-cooked food at temperature.
b.
c. This equipment is not designed for industrial or laboratory use.

4) Cleanliness of this appliance and its accessories is essential to good sanitation.

This equipment is intended for use in commercial establishments only.

5) DO NOT submerge this applia nce in water. This appliance is not jet stream approved. DO NOT direct
water jet or steam jet at this appliance, or at any control panel or wiring. DO NOT splash or pour water
on, in or over any controls, control panel or wiring. DO NOT use corrosive chemicals or vapors in this
appliance.

6) DO NOT store this appliance outdoors. DO NOT use this product near water – for example,
near a kitchen sink, in a wet basement, or near a swimming pool, or similar environment.

7) DO NOT operate this appliance if it has a damaged cord or plug, if it is not working properly, or if it has

been damaged or dropped. Do not immerse cord or plug in water, keep cord away from heated
surfaces, and do not let cord hang over edge of table or counter.

8) DO NOT cover or block any openings on the appliance.

9) Only qualified service personnel should service this appliance.

NOTE: This equipment has been designed and manufactured to meet all applicable health and
safety codes and will give years of dependable service if used properly. All cabinets should be
thoroughly cleaned before using.

NOTE:

illustrations and/or adjustment procedures, is intended for use by qualified technical personnel and is
subject to change without notice.

The technical content of this manual, including any wiring diagrams, schem atics, parts breakdown

2

Carter-Hoffmann Series RTB Rethermalization cabinets are designed to uniformly rethermal ize indi­vidually pre-packaged menu items or individual meal trays in baskets.

INTRODUCTION

This equipment manual will provide you with basic information to safely install and operate this piece
of equipment. Should you encounter any difficulties, have any questions, or require any assistance,
please contact Carter-Hoffmann’s Technical Service department di rectly, at:

Telephone [phone] (toll-free) 847-362-5500
Fax [phone]
Email [e-mail].

PRODUCT SPECIFICATIONS

RTB34

Model

Number

RTB10

RTB16 16 3

RTB34 34 3

RTB341 32

RTB281 28

Basket

Capacity*

13-3/8” x 25-7/8”

10 3

(on roll-in dolly) 3 (76)

(on roll-in dolly)

Basket

Spacing

Baskets

(76)

(76)

(76)

nest

Inside Working

Height

in (mm)

14-5/8

(371)

23-5/8

(600)

53-3/8
(1356)

58

(1473)

34-7/16

(875(

Overall Dimensions

Height Depth Width

in (mm)

39-1/4 35 33-1/8
(997) (889) (842) 5 (127)

48-1/4 35 33-1/8
(1226) (889) (842) 5 (127)

77-3/4 35 33-1/8
(1975) (889) (842) 5 (127)

78-1/2 35-5/8 35-3/8
(1994) (905) (899)

53-3/16 36-1/4 35-7/16
(1351) (921) (900)

Caster

Diameter

in (mm)

On legs 500

N/A 450

Class 100

Shipping

Weight

lbs (kg)

270

(123)

400

(181)

525

(238)

(227)

(205)

Construction...All Stainless steel double panel insulated cabinet with tamper resistant fasteners, heavy-duty
strap hinges. Heavy-duty edge-mount latch with magnetic catch. High temperature silicone gasket mounted to
cabinet.

Controller...microprocessor-based controller allows the user to program and store up to ten pre-set retherm
menu cycles. Each menu contains four retherm/hold cycles. Each cycle can be easily programmed for a
unique time and temperature to optimize performance of the heatin g system. Once a menu is programmed,
the cycle is stored in the controller’s memory until a change is made.

Heating System...Heavy-duty stainless steel construction. Secured in-place with tamper resistant fasters;
removable with tools. Inconel-sheathed heating elements, dual cooling fans and thermally protected blower
motor with long-life bearings. Precision engineered interior cabinet baffle system.

Performance… Capable of heating from 70°F (21°C) to 200°F (90C) in 5 minutes with a differential of ± 2.5°F.
Recovery from 120°F (49°C) to 200°F (90°C) in one minute (performance based on empty cabinet)

Electrical Specifications*

Model Volts Phase kW Amps

RTB10 208 1 6 28
RTB16 208 1 9 44

RTB34 208 3 18 60
RTB341 208 3 18 60
RTB281 208 3 27 100

* Electrical specifications shown are typical for standard cabinets. Due to the often customized nature of this product line, i. e. cabinets built to consultant’s/
facility specifications, the electrical specifications on your particular cabinet may be different. Consult serial tag on rear of heating unit for electrical info.

3

UNPACKING, INSPECTION & INSTALLATION

This appliance
should be
thoroughly

cleaned prior to use.
See the CLEANING

INSTRUCTIONS in
this manual.

NOTE: DO NOT discard
the carton or other pack­ing materials until you

1. Remove the cabinet from shipping carton, ensuring that all packing
materials and protective plastic has been removed from the unit.

2. Inspect all components for completeness and condition.

3. If any freight damage is present, a freight claim must be filed im­mediately with the shipping company.

4. Freight damage is not covered under warranty.

5. Check to insure all components are included: cabinet, instruction
packet and additional accessories.

6. Read operation instructions completely.

have inspected the appli­ance for hidden damage
and checked it for proper

7. Appliance should be thoroughly cleaned before use. See CLEAN­ING INSTRUCTIONS in this manual.

operation. Refer to

FREIGHT DAMAGE
CLAIM PROCEDURE
BELOW

FREIGHT DAMAGE PROCEDURE

NOTE: For your protection, please note that equipment in this shipment was carefully ins pected and packaged

by skilled personnel before leaving the factory. Upon acceptance of this shipment, the transportatio n company
assumes full responsibility for its safe delivery.

IF SHIPMENT ARRIVES DAMAGED:

1. VISIBLE LOSS OR DAMAGE: Be certain that any visible loss or damage is noted on the freight bill or
express receipt, and that the note of loss or damage is signed by the delivery person.

2. FILE CLAIM FOR DAMAGE IMMEDIATELY
immediately.

3. CONCEALED DAMAGE: If damage is unnoticed unti l the merchandis e is unpack ed, notif y the transporta­tion company or carrier immediately, and then file a “CONCEALED DAMAGE” claim with them. This
should be done within fifteen (15) days from the date the delivery was made to you. Be sure to retain the
container for inspection.

Carter-Hoffmann cannot assume liability for damage or loss incurred in transit, freight damage is not covered
under warranty. We will, however, at your request, supply you with the necessary docu ments to support your
claim.

: Regardless of the extent of damage. Contact your dealer

INSTALLATION LOCATION

For proper operation and maximum performance, locate the unit in an ambient air temperature of
70ºF (21ºC). For safe operation and maximum performance, locate the unit at least 4” from any wall
or combustible material.

Avoid placement in areas near exhaust fans or where there are active air movements.
Do not locate this unit under an overhead ventilation system or close to other cooking equipment.

Fumes and grease particles can be drawn by the cooling fans into the control comp artment of the
heater which should be avoided in order to assure top performance and longer life.

Unit must be on a solid level surface.

4

INSTALLATION AND STARTUP

WARNING:
Risk of personal injury

Installation procedures must be
performed by a qualified technician
with full knowledge of all applicable
electrical codes. Failure could
result in personal injury and prop­erty damage.

IMPORTANT: See page 3
for power requirements

If necessary, contact a licensed
electrician to install an appropriate
electrical circuit with correct recep­tacle. Electrical requirements vary
by model number. Consult serial tag
on rear of heating unit for proper
electrical specifications.

DO NOT use an extension cord.

CAUTION:
Electrical Shock Hazard

T

he ground prong of the power
cord is part of a system designed to
protect you from electric shock in
the event of internal damage.

DO NOT cut off the large round
ground prong or twist a blade to fit
an existing receptacle.

GROUNDING INSTRUCTIONS

This appliance is equipped with a cord having a grounding wire with
a grounding plug which must be plugged into an outlet that is prop­erly installed and grounded. In the event of an electrical short cir­cuit, grounding reduces the risk of electric shock by providing an
escape wire for the electric current.

WARNING—Improper use of the grounding can result in a risk
of electric shock. Consult a qualified electrician or service agent if

the grounding instructions are not completely understood, or if doubt
exists as to whether the appliance is properly grounded.

To prevent an electrical shock hazard between the
appliance and other appliances or metal parts in close
vicinity, an equalization-bonding stud is provided. An
equalization bonding lead must be connected to this
stud and the other appliances/metal parts to provide
sufficient protection against potential difference. The
terminal is marked with the following symbol:

START UP

1. Prior to use, thoroughly clean the interior of the cabinet,
according to the instructions in this manual. Familiarize
yourself with the controls.

2. Plug the power cord of the cabinet into a grounded outlet
with a electrical service according to the electrical infor­mation provided on the serial tag located on the rear of
the cabinet heating unit. DO NOT MODIFY CORD PLUG.

Sample serial

tag

IMPORTANT:
Not under warranty

Damage to unit due to being
connected to the wrong voltage or
phase is NOT covered by warranty.

WARNING:
Risk of personal injury

Unit is not waterproof, to avoid
electrical shock, keep unit from be­ing submerged in water. Do not
operate if unit has been in contact
with water.

3. Set POWER switch to the “ON” position.

4. Do not load product into the cabinet. Allow the heat to
remove any residual oils which may adhere to inside
metal surfaces. A slight emission of smoke is common
during the first few hours of operation.

5. Heat rethermalizer at 315° F for 35 minutes by pressing
Product Key number ten. The heat will remove any resid­ual oils which may adhere to inside metal surfaces. To
cool down unit, press Product Key #10 again to turn off
cycle and open doors for about 15 minutes. A slight
emission of smoke is normal for the first few hours of op­eration.

6. Rethermalizer is ready for custom programming, if de­sired. See pages 9-20 for instructions.

5

CONTROLLER FEATURES

On/Off rocker switch: located to the left of the control panel (not shown). Switch will illuminate

when cabinet is turned on.

Product Keys: press to start a

cook cycle; also used in program-

ming. Replaceable menu strip to

make menu changes quickly and

easily

8 Character LED Display:

displays programming and

cook cycle information

Indicator Lights: lit when

active cook cycle is in pro-

gramming mode

Feature Keys: used to access programming

functions and controller features

Programming Center: access programming

mode and change cooking parameters

FEATURE DETAILS

Fahrenheit of Celsius Temperature Display: the controller can be configured to display the

temperature in degrees Fahrenheit or Celsius; accessible through the system program mode.
Programmable Hold Times: Product Key hold times can be programmed to track product

quality through a specified holding period. Hold time countdown begins as soon as the cook
cycle is complete. The controller will sound an alarm when the product’s hold time has expired,
alerting the operator to discard the product.

6

CONTROLLER FEATURE DETAILS

8 Character LED Display Indicator Lights Product Keys

Programming Center Feature Keys

Four-Stage Programming: each Product Key can be programmed to personalize your cook-

ing system with up to four cooking temperatures and up to ten cook times for a single cook cy­cle. With each Product Key, you can select a menu, start and stop a menu, scroll through pro­grammed data (in Program Mode).
Programmable Stage Temperatures: cook temperatures for each stage on each Product
Key can be programmed. The temperature range is 200°F to 350°F (93.3°C to 172°C)
Programmable Stage Times: cook times for each Product Key can be programmed.
The controller is programmable in minutes (up to 99) and seconds (up to 59) and allows up
to ten stages per Product Key. Note: multiple cook starts are not allowed if a product key
has more than one stage programmed.

Programmable Fast.Flex™ Timing Mode: flex or straight timing can be configured for each
stage on each Product Key. To insure consistent, high-quality food product, flex time will ad­just the actual cook time, taking into consideration the temperature variation due to load size,
initial product temperature, product moisture content, and other factors affecting the cook cycle.
If cooking by straight time, the controller will cook only for the specified time without adjusting
for these variances.

7

DAILY OPERATION

WARNING:
HOT SURFACE

Inner surfaces of the unit will be
very hot during and after operation.

Avoid touching the cabinet when
loading or removing product.

Operating range:
Temperature: 200ºF-350ºF

(93.3°C to 172°C)
Time: up to 99 minutes, 59
seconds, for each stage on the
Product Key

CONTROLLER
OPERATING
ENVIRONMENT

The solid state components in the
controller are designed to operate
reliably in a temperature range up
to 158°F (70°C). Before installing,
verify that the ambient tempera­ture where this product is located
does not exceed this temperature.

NOTE: To review and/or program
time and temperature settings for
each Product Key, refer to Pro-
gramming Instructions on
pages 10-20.

*NOTE: FAST.FLEX™ Timing

Mode may assist you with vari­able product features such as
temperature and load; see page
16 for programming instructions.

When cabinet is turned on, controller will default to Product
Key 1, indicated by illuminated indicator light. The display will
read “LOW”.

1) Turn power switch ON.

2) Load Product: For best retherm times, product must be

thawed or slacked prior to loading. Chilled or frozen food will
extend retherm time substantially*. Load baskets of food, be­ginning at the bottom of the cabinet and working up. If rether­ming less than a full load, arrange baskets so they are located
on the center shelves; this will ensure best air circulation and
even heating around the food.

3) Start a Cook Cycle: Press desired Product Key (1 through
10 to start a cook cycle. If the key is programmed, the correct
cooking time will be displayed and will immediately start to
count down in minutes and seconds. “DONE” will display
when the cook cycle has ended. Product is ready to be re­moved, but may stay in the cabinet in Hold Mode until served.

4) Respond to DONE Alarm: DONE alarm will sound at the
end of a completed cycle. Cancel the signal by pressing the
same Product Key used to start the cook cycle.

5) Stop a Cook Cycle: Press and hold an active Product Key
for 3 seconds. Timing will stop.

6) Holding Cycle: If the controller is programmed with holding
times, they will automatically start counting upon expiration of
the cooking cycle. When there are active hold times the HOLD
indicator light will be lit.

To view all active hold times, press and hold the HOLD Key.
Upon expiration, the timer will display “HOLD” and pulse with
an audible tone.

To cancel, press the HOLD Key.

ON/OFF SCAN

8

TEMP

TOGL CLEAR

HOLD