Prince Castle DHB2-20CE Parts List

OPERATING

INSTRUCTIONS

Dedicated Holding Bin
DHB2-20CE & GB Series

Prince Castle Food Holding Bins provide the capacity re­quired for large foodservice operations while performing at
peak energy efficiency. Each unit features two individually
controlled holding chambers. New Reli-A-Temp™ infrared
heater technology holds product temperatures more consis­tent within the designated holding time than other types of
heating systems. This exclusive heater design spreads the
heat evenly over the entire food holding area, eliminating
edge drop off. Food is kept at the desired serving tempera­ture.

TABLE OF CONTENTS PAGE

Installation..................................................................... 2

Controller Identification ................................................ 2

Operation ....................................................................... 3

Programming................................................................. 3

Calibration & Cleaning ................................................. 4

Troubleshooting Guide ................................................. 5

Exploded View & Parts List ........................................ 6

Wiring Diagram ............................................................. 8

LIMITED WARRANTY

This product is warranted to be free from defects in material and/or
workmanship for a period of 1 year from date of original installation,
not to exceed 18 months from the date of manufacture.

Any component which proves to be faulty in material and/or
workmanship will be replaced or repaired (at the option of Prince
Castle, Inc.) without cost to the customer for parts and labor. This
warranty covers on-location service (i.e. trip charges and/or
mileage). Travel mileage is limited to 100 miles (200 Kilometers)
round trip (one trip warranty) from an authorized service agency or
its sub-service agency.

This warranty is subject to the following exceptions/conditions:

• Use of any non-genuine Prince Castle parts voids this warranty.

• All labor to be performed during regular work hours. Overtime
premium (the incremental amount) will be charged to the
customer.

• Damage caused by carelessness, neglect and/or abuse (e.g.,
dropping, tampering or altering parts, equipment damaged in
shipment, by fire, flood or an act of God) is not covered under
this warranty.

• All problems due to operation at voltages other than that
specified on equipment nameplates are not covered by this
warranty. Conversion to correct voltage is the customer’s
responsibility.

• This equipment must be serviced by Prince Castle Authorized
Service Agency or a Prince Castle Service Technician during the
warranty period.

ELECTRICAL SPECIFICATIONS

DHB2-20CE DHB2-20GB

Voltage 220-240 240

Watts 2600 2600

Hertz 50 50

Amps 10.8 18.8

355 East Kehoe Blvd. Carol Stream, IL 60188

Tel: [phone] ! Fax: [phone]

Toll Free: 1-800-PCASTLE

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!

INSTALLATION

1. After you have removed the bin from the carton,
inspect the unit for signs of damage. If there is
damage to the unit:

! Notify carrier within 24 hours after delivery.

TEMPERATURE MODE FUNCTIONS

UPPER SHELF LED: When lit, indicates that the

temperature displayed is for one of the upper shelf
heaters, a U will appear in the display for the upper
heater, a L for the lower heater.

! Save carton and packaging materials for inspec-

tion purposes.

! Contact your local dealer, or if purchased

directly,the Prince Castle Customer Sales Depart­ ment at 1-800-722-7853 to arrange for a replace­ ment to be sent.

1. Verify that all parts have been received. A rack kit
should be received with bin.

2. Remove all packaging and the white protective
covering from the bin.

3. Insert the racks and pan covers into the appropriate
heater compartment.

LOWER SHELF LED:When lit, indicates that the
temperature displayed is for one of the lower shelf
heaters, a U will appear in the display for the upper
heater, a L for the lower heater.ACTUAL TEMP LED:
When lit, indicates that the actual temperaure for the
selected heater is displayed.

SET POINT LED: When lit, indicates that the Set
Point Temeparure for the selected heater is dis­played.

PROG LED: When lit, indicates the controller is in
the Program Mode.

HEAT LED: When lit, indicates that the selected
heater is cycling on.

UP ARROW or DOWN ARROW: Pressing either
button will allow the operator to select another
heater assembly for display or programming pur­poses.

ACTUAL TEMP BUTTON: When pressed, the actual
temperature for the selected heater will appear in the
display.

CONTROL PANEL IDENTIFICATION

Program

LED

Up & Down

Actual Temp

Upper
Shelf
LED

Lower
Shelf
LED

Arrows

Button

Actual Temp
LED

Set Point
LED

Heat LED

Pan Timer
Buttons

Set Point
Button

SET POINT BUTTON: When pressed, the set point
temperature for the selected heater will appear in the
display.

SET POINT BUTTON and DOWN ARROW: When
pressed simultaneously, will enter the program mode
for changing the set point temperature for the se­lected heater assembly.

UP ARROW and DOWN ARROW: When pressed &
held simultaneously, will switch controller from
Temperature Mode to Time Mode or Time Mode to
Temperature Mode.

PROGRAMMING TEMPERATURES

1. Turn on power switch.

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2. Select heater that needs to be changed by
pressing either the Up or Down arrow until the
appropriate shelf LED (Upper or Lower) and the
appropriate heater (U=Upper, L=Lower) appears in
the display.

3. Press and hold the Set Point Button and then the
the down arrow until the audio alarm beeps and

the LED next to ”Prog” is lit. The current program
temperature will be in the display.

3. Press the appropriate Pan Timer Button. The red
LED for the Pan Timer Button will flash and the
programmed holding time for that product will
begin to countdown. Note: All four Pan Timer
Buttons are preset for 30 minutes. The countdown
time will be displayed in hours and minutes, until
the time reaches 10 minutes. At that point, the
display will change to minutes and seconds.

4. If more than one Pan Timer Button is activated,
the active pan timer with the least amount of
countdown time remaining will flash its LED
indicator and the time remaining will appear in the
display. The other active pan timers will have a
solid red LED.

5. Remove product from the pan as necessary.

6. At the end of the countdown sequence, an audio
alarm will sound and the display will flash “END”.
Press the Pan Timer Button with the flashing LED
to cancel the audio alarm.

7. Remove that pan and discard the remaining
product in it.

4. Press the up arrow to change the temperature.

5. Press the set point button to store the tempera­ture change.

Note: Pan Timers can only be activated or de­activated when the controller is in the Time Mode.

To Cancel An Active Pan Timer When Pan Is
Empty:

Press the Pan Timer Button three times. The Pan
Timer LED will shut off and the display will revert
back to show the Pan Timer with the least amount of
countdown time remaining.

To View The Remaining Countdown Time For An
Active Pan Timer:

The countdown time for the pan timer with the least
amount of time remaining will appear in the display.
To view the time remaining for another active pan
timer, press the pan timer button. The remaining
countdown time for that pan timer will appear in the
display. When the button is released the display will
revert back to the least remaining countdown time.

To View the Actual Or Set Point Temperature
For A Selected Heater:

6. Repeat steps 2-5 for the other heaters.

OPERATION

1. Press and hold both the UP ARROW and DOWN
ARROW to change the controller to the Time

Mode. “----” will appear in the display.

2. Place a pan of product into the appropriate rack
location.

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1. When in the Time Mode, press and hold both
theDOWN ARROW and the UP ARROW for 5
seconds to change the controller to the Tempera­ture Mode. The display will change to show the
actual temperature for the currently selected
heater.

2. Press either the UP ARROW or the DOWN AR-
ROW to select the proper heater assembly.

3. Press either the ACTUAL TEMP or SET POINT
BUTTON to display the desired temperature.

4. Press and hold both the UP ARROW and DOWN
ARROW for 5 seconds to return to the Time
Mode.

PAN TIMER #4

1. Press and hold Pan Timer Button #4 and then
the DOWN ARROW for approximately 6 seconds.
The program LED will light up and the display will
show the current countdown time for the channel.

2. Press either the UP ARROW or DOWN ARROW
to adjust the time.

PROGRAMMING TIME CHANGE

To Program A Pan Timer Change:

NOTE: To program pan timer changes, the controller
must be in the Timer Mode. If the controller is in the
Temperature Mode, press and hold the UP ARROW
and DOWN ARROW for 5 seconds. (Times can be
programmed From “0” to 9:59 Hours.)

PAN TIMER #1

1. Press and hold Pan Timer Button #1 and then
the UP ARROW for approximately 6 seconds. The
program LED will light up and the display will
show the current countdown time for the chan­nel.2. Press either the UP ARROW or DOWN
ARROW to adjust the time.

2. When the correct time is displayed, press Pan
Timer Button #1 to store the new time and return
to the timer mode.

PAN TIMER #2

1. Press and hold Pan Timer Button #2 and then
the DOWN ARROW for approximately 6 seconds.
The program LED will light up and the display will
show the current countdown time for the channel.

2. Press either the UP ARROW or DOWN ARROW
to adjust the time.

3 When the correct time is displayed, press Pan

Timer Button #2 to store the new time and return
to the timer mode.

PAN TIMER #3

1. Press and hold Pan Timer Button #3 and then
the UP ARROW for approximately 6 seconds. The
program LED will light up and the display will
show the current countdown time for the channel.

2. Press either the UP ARROW or DOWN ARROW
to adjust the time.

3. When the correct time is displayed, press Pan
Timer Button #4 to store the new time and return
to the timer mode.

Calibration Mode

The calibration mode offers a method to compensate
between what temperature the controller senses and
the temperature that a independant surface probe
reads. Calibration should be done on a monthly
basis.

Note: Allow the heaters sufficient time to tempera­ture stabilize before starting the Calibration Mode.
The controller must be in the Temperature Mode to
do heater calibrations.

1. Press the UP ARROW or the DOWN ARROW to
select the heater assembly to be calibrated.

2. Take a surface temperature reading near the
center of the heater assembly. CAUTION: The
surface temperatures are HOT, caution must be
used when taking temperature readings.

3. Press and hold the ACTUAL TEMP Button and
the UP ARROW for 6 seconds. The program mode
LED will light up and the actual temperature
sensed by the conroller will appear in the display.

4. Press the UP ARROW or DOWN ARROW to
adjust the display temperature until it matches
the surface probe temperature.

5. Press the ACTUAL TEMP Button to store the
calibrated temperature and return to the Tempera­ture Mode.

NOTE: To clear the offset value for a heater, press
the SET POINT Button while in the calibration
mode.The action will reset the offset value back to
zero.

3. When the correct time is displayed, press Pan
Timer Button #3 to store the new time and return
to the timer mode.

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TROUBLESHOOTING

The controller incorporates some diagnostic hardware and software to aid in troubleshooting problems. The
display will flash the problem if detected when the heater in question is selected.

Problem Cause Solution

A. Display flashes Open relay. Replace Power Circuit Board
“Opn” & “rEL” Circuit inoperable

B. Display flashes Shorted relay. Replace Power Circuit Board.
“SHr” & “rEL” Circuit inoperable.

Open heater. Test heater resistance.150.2 OHMS.
Unplugged ribbon cable between Verify ribbon cable connection.
Power and Main Circuit Boards.

C. Display shows “LLL” Temperature is below 75° F N/A

(normal operation)

Display shows “LLL” Heater inoperable. Test heater resistance.150.2 OHMS.
for an extended period Probe inoperable. Check for open thermocouple wires from
of time. probe. Replace heater/probe assembly.

Display shows “LLL” and Circuit inoperable. (see A). See A above.
then changes to “Opn”& “rel”
and heater surface
temperature is cool.

Display shows “LLL” and Circuit inoperable. (see B) See B above.
then changes to “SHr”&“rEL”
and heater surface
temperature is cool.

D.Display shows “HHH” for Temperature is above400° F Diagnostic circuit inoperable. Replace
an extended period of time (abnormal operation) Power Circuit Board.See B above.
and heater surface

temperature is hot.

Display shows “HHH” for Probe is inoperable Check for pinched thermocouple

an extended period of time wires from probe. Replace heater/probe
and heater surface assembly.
temperature is cool.

CLEANING

1) Turn off power switch.

CAUTION: This appliance is not water
tight. Do not clean with a Water Jet/
Jet Spray. Do not immerse in water.

2) Unplug power cord from receptacle.

3) Allow heaters to cool (approximately 15 minutes).

4) Wipe down with a damp cloth. DO NOT USE AN
ABRASIVE PAD, UNAPPROVED CLEANING SOLU­TIONS, ICE OR WATER.

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Unplug power cord before cleaning

EXPLODED VIEW

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23

1

7

6

7

6

2

24

20

21

5

8

4

9

10

22

4

3

11

12

PARTS LIST

1 542-112 Cover, Side
2 76-719 Pin, Heater
3 542-114 Retainer, Shelf
4 542-113 Bracket, Shelf
5 542-108 Chassis, Left
6 542-131S Lower Heater Assembly (220-240 Volt)
7 542-130S Upper Heater Assembly (220-240 Volt)
8 542-072 Base
9 542-073 Cover, Bottom
10 197-232 Rubber Foot
11 78-166S Power Switch
12 542-020S Overlay with Bracket (542-082)
13 88-653S Speaker Assembly
14 542-010S Display P.C. Board
15 542-085 Wire Tunnel
16 542-119S Main P.C.Board (220-240V)
17 72-337S Power Cord (220-240 Volt)
18 542-106 Chassis, Right
19 542-078 Panel, Outer Rear
20 542-077 Panel, Inner Rear
21 542-118 Bracket, Rear Shelf
22 542-074 Header
23 542-075 Cover, Top
24 542-097 Trim, Top Heater

19

18

4

15

15

14

17

2

16

1

WIRING DIAGRAM

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