Marshall amplification Dh5-3 User manual

OWNER’S MANUAL

MODEL DH5-3 & DH5-3B – HEATED HOLDING UNIT

160805 RV110612

Supplier Name: MARSHALL AIR SYSTEMS, INC.

Address: 419 Peachtree Drive South

Charlotte, NC 28217

Serial #'s: ______________________

______________________

Date Received: ______________________

Date Installed: ______________________

Telephone #: 704-525-6230

Fax #: 704-525-6229

Service Referral #: 800-722-3474

Local Service Name: ______________________

Local Service #: ______________________

PRODUCT DESCRIPTION

This Heated Holding Unit features Marshall’s own

ThermoGloheating technology. Heat radiates from

every square inch of the upper and lower flat plate

heating surfaces. This eliminates the need to clean

intricate calrod, wire and reflector assemblies.

The DH5-3 and the DH5-3B Heated Holding Units

accommodate up to three 1/3 size pans 2 1/2" deep,

two 1/2 sheet pans, one full pan or one 1/2 sheet

pan.

The unit is controlled by an integrated

time/temperature controller located on the front of

the heated holding cabinet. The control determines

the intensity of top and bottom heaters. The

integrated time/temperature controller also features

3 independent countdown timers to help maintain

product integrity. An On/Off switch is easily

accessible to the store personnel allowing them to

turn on and off the unit. The Heated Holding Unit

offers the latest in technological design which gives

you the most favorable holding characteristics in a

system that is simple to work with and operate.

GENERAL SPECIFICATIONS

Model: DH5-3 / DH5-3B

Height: 9.125”

Width: 22.375”

Depth: 14.500”

Electrical: 120V - 4.3A

Weight: 40 lbs

Approvals: NSF/ETL

FOR YOUR SAFETY

DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS OR LIQUIDS IN THE VICINITY OF THIS OR

ANY OTHER APPLIANCE.

WARNING: IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, OR MAINTENANCE CAN CAUSE PROPERTY

DAMAGE, INJURY OR DEATH. READ THE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

THOROUGHLY BEFORE INSTALLING OR SERVICING THIS EQUIPMENT.

KEEP THIS MANUAL IN A SAFE PLACE AND RETAIN FOR FUTURE USE.

DH5-3 Shown

OWNER’S MANUAL

MODEL DH5-3 & DH5-3B – HEATED HOLDING UNIT

160805 RV110612

TABLE OF CONTENTS

PRE INSTALLATION…………………………………………………………………………………………………1

FINAL INSTALLATION..................................................................................................................................1

TO USE THE HOLDING UNIT …………………………………………………….............................................1

TIMER/TEMPERATURE CONTROLLER OPERATION…………………………………………………….......2

DAILY MAINTENANCE.................................................................................................................................3

MONTHLY MAINTENANCE..........................................................................................................................3

TROUBLESHOOTING..................................................................................................................................4

REPLACEMENT PARTS ..............................................................................................................................5

ILLUSTRATIONS

OVERALL DIMENSIONS DH5-3 & DH5-3B...................................................................................FIGURE 1

REPLACEMENT PARTS DH5-3 & DH5-3B....................................................................................FIGURE 2

TIME / TEMPERATURE ADJUSTMENT PROCEDURE................................................................FIGURE 3

SCHEMATICS

WIRING SCHEMATIC, DH5 SERIES 120V 4.3-17.2A.......................................................................160458

OWNER’S MANUAL

MODEL DH5-3 & DH5-3B – HEATED HOLDING UNIT

160805 RV110612 1

PRE-INSTALLATION

1. The Heated Holding Unit is packaged to minimize the risk of shipping damage. Immediately upon receipt,

make certain to inspect the unit for damage. FILE ALL CLAIMS WITH THE FREIGHT CARRIER.

2. Unpack and inspect the unit. IF ANY CONCEALED DAMAGE, FILE ALL CLAIMS WITH THE FREIGHT

CARRIER.

FINAL INSTALLATION

1. Unpack unit and remove all protective paper or plastic covering from metal parts.

2. Place holding unit on stable base.

3. Plug unit into 120v receptacle rated for 20 amps.

TO USE THE HOLDING UNIT

1. Turn on the power switch. The unit is ready to use after a 30 minute preheat period.

2. The unit is factory set for a temperature of 250°f for both upper and bottom heaters. The factory set hold

time is 45 minutes with the alert happening at the 40:30 minute time. If a new setting is required, follow the

instructions in Figure 3 to adjust the settings. DO NOT SET THE TEMPERATURE HIGHER THAN 290° F.

DOING SO WILL CAUSE DAMAGE TO THE UNIT.

3. The unit can hold up to three 1/3 size pans 2 1/2" deep, two 1/2 sheet pans, one full pan or one 1/2 sheet

pan per deck. Each controller display correspond to a 1/3 size pan. Place a product pan in one of the 3

possible positions and press the associated timer button (see User Interface below) to begin timer.

4. The corresponding display will then show the remaining holding time. Once the corresponding holding time

reaches 40:30 minutes of hold time it will sound a warning alert.

5. Once the corresponding holding time reaches the final minute, the display will change from minutes to

seconds.

6. Once the corresponding holding time reaches 0, a warning alert will sound. Press and release the

corresponding pan timer button to stop.

7. Any timer can be stopped at any time during the holding period, by pressing and holding the pan timer button

for 2.5 seconds.

TIMER/TEMPERATURE CONTROLLER OPERATION

OWNER’S MANUAL

MODEL DH5-3 & DH5-3B – HEATED HOLDING UNIT

160805 RV110612 2

The following is the user interface layout:

TIMER FUNCTIONS

The factory set hold time is 45 minutes with the alert happening at the 40:30 minute time (10% of holding time). If a

new setting is required, follow the instructions in Figure 3 to adjust the settings.

TIMER DISPLAY

"PrE" "hEt" The holding unit has not reached ready mode for holding (factory set for 30 minutes).

“----“ Holding unit has reached ready mode for holding but timers not active.

“42” Timer active, hold time remaining (flashes last 10% of the holding period with an audible alert at the

start of the last 10%).

“000” Holding period has elapsed. Product to be discarded (flashes with audible alert).

DISPLAY TEMPERATURE

The unit has two heaters, top and bottom. Press the temperature button to display the upper heater temperature.

The left display will show "uP" for the upper heater while the right display shows the temperature. Press the

temperature button again to display the lower heater temperature. The left display will show "Lo" for the lower

heater while the right display shows the temperature. Press and hold the temperature button to exit to previous

state.

Left Pan

Timer Button Temperature Button

Left Pan Display Middle Pan Display Right Pan Display

Middle Pan

Timer Button Right Pan

Timer Button

Up & Down Arrow

Buttons

OWNER’S MANUAL

MODEL DH5-3 & DH5-3B – HEATED HOLDING UNIT

160805 RV110612 3

ADJUSTING TEMPERATURE, HOLDING PERIOD OR PRE-ALARM %

The unit is factory set, however, if a new setting is required; follow the instructions in Figure 3 to adjust the

settings. DO NOT SET THE TEMPERATURE HIGHER THAN 290°F. DOING SO WILL CAUSE DAMAGE TO

THE UNIT.

DAILY MAINTENANCE

1. Turn off the unit and allow it to cool for 20 minutes.

2. Pans and/or pan covers should be removed, washed in mild multi-purpose detergent, rinsed and sanitized.

3. Clean unit and base with a damp cloth and non-abrasive cleaner. DO NOT IMMERSE UNIT IN WATER!

DO NOT USE CAUSTIC CLEANING SOLUTIONS!

4. Allow sufficient drying time before attempting to use.

MONTHLY MAINTENANCE

1. Follow the daily schedule; there are no adjustments.

2. Inspect condition of cord/plug. If damaged, have it replaced.

3. Inspect the condition of the control overlay. If damaged, have it replaced.

OWNER’S MANUAL

MODEL DH5-3 & DH5-3B – HEATED HOLDING UNIT

160805 RV110612 4

TROUBLESHOOTING CHART

** DISASSEMBLING HEATER VOIDS WARRANTY **

Identify problem in the left column and look for a possible cause in the middle column and the solution in right

hand column. Probable causes listed in the order they are most likely to happen. This sequence should be used

to isolate the problem.

PROBLEM

POSSIBLE CAUSE

SOLUTION

1. NO HEAT A. UNPLUGGED

B. CIRCUIT BREAKER IS

TRIPPED

C. CORD DEFECTIVE

D. CONTROLLER "OFF"

E. DEFECTIVE SOLID

STATE RELAY

A. PLUG IN

B. RESET BREAKER - CALL

AN ELECTRICIAN IF TRIPPED

TWICE

C. REPLACE DEFECTIVE

CORD

D. TURN CONTROLLER "ON"

E. REPLACE DEFECTIVE

SOLID STATE RELAY

2. LOW PRODUCT

TEMPERATURE A. TEMPERATURE SET

TOO LOW

B. EXCESSIVE AIR

DRAFT(S)

A. ADJUST TO HIGHER

SETTING

B. SHIELD DRAFT(S) OR

MOVE UNIT

3. ERROR CODE:

"OPN" "UP" OR "LO"

A. OPEN SENSOR

EITHER UPPER "UP" OR

LOWER "LO"

B. LOOSE SENSOR

CONNECTION

A. REPLACE SENSOR**

B. SECURE SENSOR

CONNECTION

4. ERROR CODE:

"SHT" "UP" OR "LO" A. SENSOR FAILED

“SHORT” A. REPLACE SENSOR**

*SEE ‘DISPLAY TEMPERATURE’ FOR ZONE LOCATIONS

**NOTE: When replacing sensor, a special heat sink sealant will be present when removing failed sensor.

Applying new sealant is not required; however, be sure to utilize existing sealant when mounting new sensor.

OWNER’S MANUAL

MODEL DH5-3 & DH5-3B – HEATED HOLDING UNIT

160805 RV110612 5

REPLACEMENT PARTS

PART #

DESCRIPTION QTY PER

UNIT

LOCATION

504289 Blanket, Top Heater 1 Figure 2

504293 Blanket, Bottom Heater 1 Figure 2

502064 Sensor, RTD, 48" 2 Figure 2

Schematic

502080 Connector, Strain Relief 1 Figure 2

504023 Relay, Solid State 25A 2 Figure 2,

Schematic

158678 Panel, Rear Cover 1 Figure 2

501873 Fan, Cooling, Boxer, 115VAC 1 Figure 2

Schematic

502075 Cord, 14/3 SJTOW W/STR 120V Plug 1 Figure 2

Schematic

160294 Cover, 2.5" Pan (DH5-3) 1 Figure 2

501867 Foot, Blk Rubber 4 Figure 2

502425 Switch, Curvette, Double Pole 1 Figure 2,

Schematic

160459 Control, Integrated Time/Temp DH5-3 & DH5-3B 1 Figure 2,

Schematic

160459 Overlay, Controller 1 Figure 2

504318 Power Supply 1 Figure 2

Schematic

RV110612

160805FIG1

OVERALL DIMENSIONS DH5-3 & DH5-3B

FIGURE 1

INTEGRATED TIME/TEMPERATURE

CONTROL

CORD, 14/3 SJTOW W/STR 120V PLUG

22.375

9.125

14.500

RV110612

160805FIG2

Parts List QTYDESCRIPTIONPART NO.

ITEM 1

BLANKET, TOP HEATER

50428911BLANKET, BOTTOM HEATER50429322SENSOR, RTD, 48"50206431

CONNECTOR, STRAIN RELIEF

50208042

RELAY, SOLID STATE 25A

50402351PANEL, REAR COVER15867861FAN, COOLING, BOXER, 115VAC501873

CORD, 14/3 SJTOW W/STR 120V PLUG

50207581

COVER, 2.5" PAN

16029494

FOOT, BLK RUBBER50186710 1SWITCH, CURVETTE, DOUBLE POLE50242511 1

CONTROL, INTEGRATED TIME/TEMP

16045912 1

OVERLAY, CONTROLLER

16028413 1POWER SUPPLY50431814

REPLACEMENT PARTS DH5-3 & DH5-3B

FIGURE 2

RV110612

160805FIG3

TIME / TEMPERATURE ADJUSTMENT PROCEDURE

FIGURE 3

WARNING: ALL CHANGES ARE SAVED AS THEY HAPPEN! WRITE DOWN ALL VALUES BEFORE MAKING ANY CHANGES IN CASE A WRONG VALUE IS CHANGED.

TO ADJUST HOLDING TIMES (FACTORY SET FOR 30 MINUTES):

1. PRESS AND HOLD FOR APPROXIMATELY 2 SECONDS THE TIMER BUTTON FOR THE PAN THAT NEEDS CHANGING.

2. THE DISPLAY WILL FLASH THE CURRENT SETTING FOR THAT PAN.

3. PRESS AND HOLD THE UP OR DOWN ARROW BUTTON TO CONTINIOUSLY CHANGE VALUE. PRESS AND RELEASE TO CHANGE BY INCREMENTS OF 1.

4. PRESS AND HOLD THE TIMER BUTTON FOR APPROXIMATELY 2 SECONDS TO SAVE AND EXIT TO PREVIOUS STATE.

PROGRAMMING MODE:

TO ACCESS PROGRAMMABLE PARAMETERS, PRESS AND HOLD FOR APPROXIMATELY 2 SECONDS THE UP AND DOWN ARROW BUTTONS. USE TEMPERATURE BUTTON TO CYCLE

THROUGH PARAMETERS. TO CHANGE SETTING BY INCREMENTS OF 1, PRESS ONCE UP OR DOWN ARROW BUTTON. PRESS AND HOLD UP OR DOWN ARROW BUTTON FOR

CONTINIOUS INCREMENTATION. PRESS AND HOLD THE TEMPERATURE BUTTON AT ANY TIME TO SAVE AND EXIT TO PREVIOUS STATE.

1) TEMPERATURE UNITS (FACTORY SET TO "F"): RIGHT DISPLAY WILL SHOW "F" FOR FAHRENHEIT. USE UP OR DOWN ARROW BUTTON TO CHANGE TO "C" FOR CELSIUS.

2) PRE-ALERT TIME (FACTORY SET TO 10): THIS REPRESENT THE PERCENTAGE OF THE HOLDING TIME THAT THE PRE-ALERT BEEPING OCCURES (E.G. IF HOLDING TIME IS 30

MINUTES, PRE-ALERT BEEPING WILL OCCUR WHEN TIMER IS DOWN TO 3 MINUTES, 10% OF 30 MINUTES). LEFT DISPLAY WILL SHOW "Alt" FOR PRE-ALERT AND RIGHT DISPLAY

WILL SHOW THE CURRENT VALUE. USE UP OR DOWN ARROW BUTTONS TO CHANGE TO NEW SETTING.

3) TOP TEMPERATURE SET POINT (FACTORY SET TO 250°F): THE LEFT DISPLAY WILL SHOW "toP" FOR TOP HEATER AND THE RIGHT DISPLAY WILL SHOW THE CURRENT SETTING.

USE UP OR DOWN ARROW BUTTONS TO CHANGE TO NEW SETTING.

4) BOTTOM TEMPERATURE SET POINT (FACTORY SET TO 250°F): THE LEFT DISPLAY WILL SHOW "bot" FOR BOTTOM HEATER AND THE RIGHT DISPLAY WILL SHOW THE CURRENT

SETTING. USE UP OR DOWN ARROW BUTTONS TO CHANGE TO NEW SETTING.

5) DISPLAY MODE (FACTORY SET TO TIME DISPLAY MODE): THE LEFT DISPLAY WILL SHOW "dSP" FOR DISPLAY AND THE RIGHT DISPLAY WILL SHOW THE CURRENT SETTING. USE

UP OR DOWN ARROW BUTTONS TO SELECT ONE OF THE SIX AVAILABLE MODES:

- "123" FOR TIME DISPLAY MODE. ALL TIMERS ARE INDEPENDENT OF EACH OTHERS AND REMAINING HOLD TIME IS INDICATED IN MINUTES.

- "rdY" FOR TEXT DISPLAY MODE. ALL TIMERS ARE INDEPENDENT OF EACH OTHERS AND ARE DISPLAYED AS TEXT MESSAGES. "hLd" FOR HOLD INDICATES THAT THE

PRODUCT IS TO BE USED AND "oLd" FOR OLD STATES THAT THE PRODUCT NEEDS TO BE DISCARD.

- "Lnc" FOR LINK MODE: IN THIS CONFIGURATION, THE TWO DISPLAYS ARE LINKED TOGETHER ALLOWING THE TRAYS OF PRODUCT TO BE SERVED IN THE ORDER THEY

WERE INSERTED ON THE SHELF. "rdY" MEANS THAT THE PRODUCT IS THE ONE BEING USED, "hLd" MEANS THAT THE PRODUCT IS NEXT IN LINE AND "oLd" MEANS THAT THE

PRODUCT IS TO BE DISCARD.

- "tLc" FOR TIME LINK MODE: SAME AS "Lnc" LINK MODE BUT THE DISPLAY ASSOCIATED TO THE PRODUCT TO BE USED WILL SHOW THE REMAINING TIME INSTEAD OF "rdY".

- "Lct" FOR LINK TRANSFER MODE: IN THIS MODE, THE SERVICE PAN (PAN TO BE USED) WILL ALWAYS BE TRANSFERRED TO THE LEFT DISPLAY OR RIGHT DISPLAY

DEPENDING ON THE TRANSFER DIRECTION SUB-PARAMETER SETTING. FOR EXAMPLE, IF THE TRANSFER DIRECTION IS SET TO LEFT, THE LEFT DISPLAY WILL SHOW "rdY" FOR

READY AND THE RIGHT DISPLAY WILL SHOW "hLd" FOR HOLD (IF ACTIVATED). ONCE THE SERVICE PAN TIMER HAS ELAPSED, THE LEFT DISPLAY WILL FLASH "oLd". A PRESS OF

THE LEFT TIMER BUTTON TO ACKNOWLEDGE THE END OF HOLDING TIME FOR THE SERVICE PAN WILL AUTOMATICALLY TRANSFER THE RIGHT TIMER HOLDING TIME (IF

ACTIVATED) TO THE LEFT. THE BACK UP PAN (RIGHT PAN) IS THEN TRANSFER TO THE LEFT POSITION AND HAS NOW BECAME THE SERVICE PAN. A NEW BACK UP PAN CAN THEN

BE INSERTED IN THE RIGHT POSITION AND THE BACK UP PAN TIMER CAN THEN BE ACTIVATED AGAIN TO START A NEW CYCLE.

- "tLt" FOR TIME LINK TRANSFER DIRECTION: SAME AS "Lct" LINK TRANSFER MODE BUT THE SERVICE PAN DISPLAY WILL SHOW REMAINING HOLDING TIME INSTEAD OF TEXT

MESSAGE "rdY".