Silver King SKBD3LS SERVICE MANUAL

Service

Product Identification

M I L K C R S K I MM

S E L E C T P

P O D U C TR

Door-Display

Connector

Cable

Display Panel

Drip Tray

Power Switch

(on side)

Product Valves

Cup Guide

USB Port

Power Cord

(under)

Home Button

Up Arrow

LCD Display

Select Button

Down Arrow

Back Button

LEDs

Size Buttons

Recipe Buttons

Product Buttons

TABLE OF CONTENTS

Product Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Silver King Serial Number Matrix . . . . . . . . . . . . . . . . . . . . . 2

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Important . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Safe Service Practices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Display Menu Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Resetting Factory Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Setting Time and Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Calibrating the Unit / Adjusting Shot Size . . . . . . . . . . . . . . . 7

Shot Size Targets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Updating and Exporting Files . . . . . . . . . . . . . . . . . . . . . . . . . 9

Changing Set Point, Base, Low Product Thresholds,

Beeper Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Zeroing Out the Load Cells . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Viewing Other Load Cell Data . . . . . . . . . . . . . . . . . . . . . . . . 12

Solenoids – Test Cycling/Viewing Status . . . . . . . . . . . . . . . . 12

Compressor – Test Cycling/Setting Up . . . . . . . . . . . . . . . . . 13

Troubleshooting Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Accessing/Servicing Components from the Front . . . . . . . . . 15

Accessing/Servicing Components from the Rear. . . . . . . . . . 18

Parts List and Exploded View . . . . . . . . . . . . . . . . . . . . . . . . 20

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

355 East Kehoe Blvd. • Carol Stream, IL 60188 USA

Telephone: [phone] • Toll Free: 1-800-PCASTLE

Fax: [phone] • www.princecastle.com

Manual

3-Product

Dairy Dispenser

Model SKBD3LS

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Limited Warranty

This Silver King branded product is warranted to be free from
defects in material and/or workmanship for a period of two (2)
years from the date of original installation, not to exceed 30
months from date of shipment from our factory. Any part or
component which proves to be faulty in material and/or
workmanship (in the opinion of Prince Castle) within the warranty
period will be replaced or repaired (at the option of Prince Castle)
without cost to the customer for parts or labor, except as provided
below. The compressor will carry an additional three (3) years
parts only warranty.

This Limited Warranty is subject to the following exceptions/
conditions.

• Use of any non OEM parts voids warranty unless otherwise
approved by Prince Castle. All work must be performed by an
authorized Prince Castle Service Agent, except as provided
herein.

• All covered labor requires preauthorization from the factory
(Call 1-888-375-2938) and shall be performed during regular
work hours. Overtime premium will not be covered.

• Travel charges are to be limited to 100 miles (200 Kilometers)
round trip: 2 hours travel time per one trip repair.

• Adjustments of any kind are not covered under this Limited
Warranty.

• Damage caused by carelessness, neglect, and/or abuse (e.g.,
using incorrect voltage, dropping, tampering with or altering
electrical components, or improper cleaning) is not covered.

• Equipment damaged in shipment or by fire, flood or act of God
is not covered.

• Damage to coated surfaces is not covered by this Limited
Warranty.

• Use of refrigerants other than specified on the equipment
serial plate voids the warranty.

• Labor repair or replacement of the following parts is not
covered by this Limited Warranty:

– Main Control Board p/n 36992S; Prince Castle will provide

replacement parts to customer so customer can replace
such parts if they are defective. Replacement instructions
are included with part supplied.

– Door Gasket p/n 36956S, Product Containers and Lids (p/n

37068S, 37069S, 37070S and 811-006S), Drip Tray p/n
37281S and cup guides p/n 37436S are considered wear
items and are not included under the warranty.

PRINCE CASTLE SHALL NOT BE LIABLE FOR INCIDENTAL
OR CONSEQUENTIAL DAMAGES, LOSSES, OR EXPENSES.
PRINCE CASTLE MAKES NO OTHER WARRANTY, EXPRESS
OR IMPLIED. ALL IMPLIED WARRANTIES OF
MECHANTABILITY AND/OR FITNESS FOR ANY PARTICULAR
PURPOSE ARE HEREBY DISCLAIMED AND EXCLUDED.

Silver King Serial Number Matrix

The manufacture date (year and month) is encoded in the serial
number’s 2nd, 3rd and 4th letters. The service bench installation
date (used to determine warranty coverage) is considered to be
the end of the following month.

The refrigerant used in the unit appears as the serial number’s last
letter.

For example:
Serial Number: SAIE

53264A
Manufacture Date: April 2008
Service Bench Installation Date: May 31, 2008

Refrigerant Used: R-134a

Manufacture Date

Refrigerant Used

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

AA AB AC AD AE AF AG AH AI AJ BA BB BC
January B AAB ABB ACB ADB AEB AFB AGB AHB AIB AJB BAB BBB BCB
February C AAC ABC ACC ADC AEC AFC AGC AHC AIC AJC BAC BBC BCC
March D AAD ABD ACD ADD AED AFD AGD AHD AID AJD BAD BBD BCD
April E AAE ABE ACE ADE AEE AFE AGE AHE AIE AJE BAE BBE BCE
May F AAF ABF ACF ADF AEF AFF AGF AHF AIF AJF BAF BBF BCF
June G AAG ABG ACG ADG AEG AFG AGG AHG AIG AJG BAG BBG BCG
July H AAH ABH ACH ADH AEH AFH AGH AHH AIH AJH BAH BBH BCH
August I AAI ABI ACI ADI AEI AFI AGI AHI AII AJI BAI BBI BCI
September J AAJ ABJ ACJ ADJ AEJ AFJ AGJ AHJ AIJ AJJ BAJ BBJ BCJ
October K AAK ABK ACK ADK AEK AFK AGK AHK AIK AJK BAK BBK BCK
November L AAL ABL ACL ADL AEL AFL AGL AHL AIL AJL BAL BBL BCL
December M AAM ABM ACM ADM AEM AFM AGM AHM AIM AJM BAM BBM BCM

ABMR

R-134a R-404a (MP-39) R401a R-22

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Safety Information

Indicates information important to the proper operation of
the unit. Failure to observe may result in damage to the
equipment and/or severe bodily injury or death.

Indicates information important to the operation of the unit.
Failure to observe may result in damage to the equipment.

WARNING

CAUTION

General Precautions

Risk of Electric Shock.

• Always unplug the power cord before servicing the unit to

avoid electric shock.

• Unit MUST be plugged into a 3-prong plug for grounding.

Cutting off the grounding spike on the power cord could
result in electric shock to the operator during operation.

• Unit must be plugged into a 15 or 20 ampere fuse- or

breaker-protected circuit. Use of a larger fuse or breaker
could result in damage to the unit and electric shock to the
operator.

Moving or Handling Hot Parts.

• Some parts may remain hot even after being unplugged.

Always use caution when servicing.

Possible Back Injury.

• Assistance in moving this piece of equipment is strongly

recommended to avoid injury.

• Always lift with your legs and not your back when lifting this

unit.

WARNING

WARNING

WARNING

General

The 3-Product Dairy Dispenser is designed to house, refrigerate
and dispense three dairy products (2% or whole milk, cream, and
skim milk). The unit has been set to maintain product within a
temperature range of 33 to 41°F.

Important

Be sure to have 3 clamps available to manually close the
tubes for any service activity that may require opening the
product valves while the tanks contain product. Office
supply binder clips work well.

Electrical Specifications

115V 60 Hz 1 Phase

Safe Service Practices

NOTE: This service manual is intended for use by persons
having electrical and mechanical training and a level of
knowledge of these subjects considered acceptable in the
service trade. Prince Castle cannot be responsible, or assume
any liability, for injury or damage arising from the use of this
manual.

To avoid personal injury and /or property damage, it is
important that Safe Service Practices be observed, including
the following limited examples:

• Do not service the unit without first reading this manual.

• Do not attempt a repair if you have any doubt as to your

ability to complete it in a safe manner.

• Do not attempt to repair or replace any component unless all

power has been disconnected.

• Prior to returning the unit to service, ensure that:

– All electrical connections are correct and secure.

– All safety grounds are correctly and securely connected.

– All components are properly re-assembled.

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Display Menu Overview

To Panel Disable To Service Menu To Temp/Compressor

“Home”

Select Product
XXXX YYYY ZZZZ

Calibrate Disp
Select Product

Temperature XX

Manager Mode
Entr Btn Combo

Panel Disable
Press Select

To Select Product

* At Manager Mode, press “X” to enter

Manager Level.

Operator Level

Manager Mode
Temp Set Pt: XX

Manager Mode
Base Select

Manager Mode
Default Dispense

Press Select To
Update Display

Press Select To
Update Relay

Export Files
To USB

Set Date/Time
MM/DD/YY HR:MM

Set Low Mlk/Skm
Threshold: XXXX

Set Low Cream
Threshold: XXXX

Manager Mode
Beeper XX

Service Menu
Etr Setup Code

** At Service Menu, press “X” + “Cap.” + “XL”

to enter Service Level.

Manager Level

**

Service Menu
Load Cells

Service Menu
Factory Default

Service Menu
Solenoids

Service Menu
Temp/Compressor

To Load Cells

Service Level

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Display Menu Overview (continued)

Error Messages

NOTE: Error messages replace the Home screen: Non-fatal errors will blink 2 seconds on and 2 seconds off. Fatal errors will stay on
until the error is fixed.

Message on Display Description Message on Display Description

Check Temp Sense Temperature probe error, open or short. No USB Detected Error during updating/exporting files, no connection.
Check Skim LC Skim tank’s load cell connection open. USB Error Please Check USB Error during updating/exporting files, problems

initializing.

Check Cream LC Cream tank’s load cell connection open.
Check Milk LC Milk tank’s load cell connection open. No File Detected On USB Error during updating files, no file detected on the

flash drive.

Board Comm Error Display-to-relay communication error.
Replace Battery Replace the battery (on control board). Bad File Detected On USB Error during updating files, a bad file detected on the

flash drive.

RTC Comm Error Real Time Clock communication error.

Resetting Factory Defaults

All data and adjustments will be reset to from-the-factory status.

CAUTION

Enter the Manager Level.

On the display panel, press the Up or Down arrow until
Manager Mode is displayed. Press the “X” button in the
Size row.

Manager Mode
Entr Btn Combo

1

Enter the Service Level.

Press the Up or Down arrow until Service Menu is
displayed. Press the Setup Code, which is “X” + “Cap.”
+ “XL”.

NOTE: If the code is not entered correctly, press the
Up arrow once and then the Down arrow once and re­enter the code.

Service Menu
Etr Setup Code

2

Reset to factory defaults.

Press the Down arrow to the Factory Default screen
and press Select.

Service Menu
Factory Default

3

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Setting Time and Date

Navigate to the
Manager Level. On

the display panel,
press the Down arrow
until Manager Mode is
displayed.

1

Press the “X”
button. The

“Manager Button
Combination” is the
“X” button in the Size
row.

2

Navigate to the
screen. Press the

Down arrow until the
Set Date/Time screen
is displayed.

3

Adjust the date and
time. Press Select to

begin the adjustment,
then use display panel
buttons to make
changes:

• Use the Home
button to tab right.

• Use the Back
button to tab left.

• Use the Up and Down arrows to change the values.

4

Press Select to
accept the changes.

5

Return to normal
operation. Press the

Home button to return
to the main menu.

6

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Calibrating the Unit / Adjusting Shot Size

NOTE: Unit must be calibrated before the unit is put into
operation and as needed thereafter to ensure that the unit is
dispensing within the required specifications.

Exercise the tubes. If unit has been idle (no shots
taken for over a half hour) take one shot of size Medium
(coffee) for each product to exercise the tubes.

1

Place a cup on the external scale and press tare.

2

Dispense a shot.

Press the button of the
product to be
dispensed, place the
cup under the proper
product tube, and then
press the “M” button to
dispense product
amount for a medium
coffee.

1

2

3

Weigh the product on the external scale. If the shot

weight is within the specified range listed in the Shot
Size Targets (41 - 51 g), then you can move on to the
next product. If the shot weight is outside of the
specified range, then a simple calibration is required. To
calibrate the unit, follow Steps 5 to 9.

4

Repeat Step 2.

5

Go to the
Calibration menu.

Press the Down arrow
once.

6

Dispense a shot.

NOTE: Make sure the
cup is under the valve
at this time, because
a medium sized shot
is dispensed.

The display now reads
“Calibrate Disp Select
Product”. Press the
button of the product
you wish to calibrate
(Milk, Cream or Skim)
and then press the “M”
button.

e e l l e e c c t t P P o o d d u u c c t t r r

C C a a l l i i b b r r a a t t D i i s s p p e e

S S

1

2

7

Weigh the cup on the external scale.

8

Enter the weight.

The display now reads
“Enter Weight 46
Grams”. Press the Up
or Down arrow until
the value on the
display matches the
weight that you
measured using the
external scale and
then press Select.

4 4 6 G G r r a a m m s s

E E n n t t e e r r W W e e g g h t t i i

1

2

9

Calibrate the next
product. The display

again reads “Calibrate
Disp Select Product”.
You may now select
the next product to
calibrate or press the
Home button to return
to normal operation.

e e l l e e c c t t P P o o d d u u c c t t r r

C C a a l l i i b b r r a a t t D i i s s p p e e

S S

or

10

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Shot Size Targets

With machine set to COFFEE

Base

ALL SHOTS ARE LISTED AND MEASURED IN GRAMS

MIN TARGET MAX

COFFEE XS

13 15 17

SM

27 31 34

MED

41 46 51

LG

54 61 67

XLG

68 76 84

LATTE SM

164 183 202

MED

247 275 303

LG

329 367 404

CAPPUCCINO SM

109 122 135

MED

164 183 202

LG

219 244 269

COOLATTA XS

54 61 67

SM

109 122 135

MED

163 183 202

LG

217 243 269

With machine set to NEUTRAL

Base

ALL SHOTS ARE LISTED AND MEASURED IN GRAMS

MIN TARGET MAX

COFFEE XS

13 15 17

SM

27 31 34

MED

41 46 51

LG

54 61 67

XLG

68 76 84

LATTE SM

164 183 202

MED

247 275 303

LG

329 367 404

CAPPUCCINO SM

109 122 135

MED

164 183 202

LG

219 244 269

COOLATTA XS

41 46 50

SM

82 91 100

MED

123 137 150

LG

164 182 200

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Updating and Exporting Files

Remove the plug covering the USB port and attach
a Flash drive.

1

Enter the Manager Level.

On the display panel, press the Up or Down arrow until
Manager Mode is displayed. Press the “X” button in the
Size row.

Manager Mode
Entr Btn Combo

2

Navigate to the screen. Press the Up or Down arrow

until the appropriate screen appears. Choose:

• Press Select To Update Display to download an
updated display file from a Flash drive.

• Press Select To Update Relay to download an
updated relay file from a Flash drive.

• Export Files To USB to upload files from the unit to
a Flash drive.

Press Select To
Update Display

Press Select To
Update Relay

Export Files
To USB

3

Press Select to initiate the download/upload. A

status message will appear in the display. (If an error
code appears, see Error Messages on page 5.)

• When a download is complete, the screen will
automatically return to the main menu.

• When an upload is complete, the screen will
automatically return to the main menu.

4

Remove the Flash drive and insert the USB port
plug.

5

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Changing Set Point, Base, Low Product Thresholds, Beeper Status

Enter the Manager Level.

On the display panel, press the Up or Down arrow until
Manager Mode is displayed. Press the “X” button in the
Size row.

Manager Mode
Entr Btn Combo

1

Navigate to the screen and change settings. Press

the Up or Down arrow until the appropriate screen
appears. Choose:

A. Manager Mode Temp Set Pt: XX to change the

unit’s set point.

1. Press Select to initiate the change.

2. Press the Up or Down arrow to choose the
desired temperature (between 35 and 40°F).

3. Press Select again to accept the change.

B. Manager Mode Base Select to change to “coffee”

or “neutral” Coolatta base.

1. Press Select to initiate the change.

2. Press the Up or Down arrow to choose the
correct term.

3. Press Select again to accept the change.

C. Set Low Mlk/Skm Threshold or Set Low Cream

Threshold to change the amount at which the unit
goes into lockout (will not dispense).

1. Press Select to initiate the change.

2. Press the Up or Down arrow to change the
amount in increments of 50 g. Default Milk and
Skim levels are 600 g and the default Cream
level is 850 g.

3. Press Select again to accept the change.

D Manager Mode Beeper On (or Off) to enable/

disable the audible alarm.

1. Press Select to initiate the change.

2. Press the Up or Down arrow to toggle between
On and Off.

3. Press Select again to accept the change.

Manager Mode
Temp Set Pt: XX

Manager Mode
Base Select

Set Low Mlk/Skm
Threshold: XXXX

Manager Mode
Beeper XX

2

Press the Home button to return to the main menu

or choose another setting to change.

3

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Zeroing Out the Load Cells

When replacing a control board (p/n 36992S) or load cell (p/n
37168S) it will be necessary to zero out the load cells. Please
carefully follow each step of the load cell calibration instructions
listed below.

IMPORTANT

Power up the unit. Connect the power cord to a

115 VAC outlet. Turn the unit on and wait while the
controller initiates.

1

Remove all product tanks from the unit. Make sure

nothing is on any of the load cells.

2

Press Home on the display panel.

3

Enter the Manager Menu.

Press the Up or Down arrow until Manager Mode is
displayed. Press the “X” button in the Size row.

Manager Mode
Entr Btn Combo

4

Enter the Service Menu.

Press the Up or Down arrow until Service Menu is
displayed. Press the Setup Code, which is “X” + “Cap.”
+ “XL”.

NOTE: If the code is not entered correctly, press the
Up arrow once and then the Down arrow once and re­enter the code.

Service Menue
Etr Setup Code

5

Press Select 3 times. A “Calibration Done” message

will appear on the display.

6

Press the Home button to return to the main menu.

7

Load the tanks and product back into the machine.

8

Follow the instructions under Calibrating the Unit /
Adjusting Shot Size.

9

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Viewing Other Load Cell Data

Enter the Manager Menu.

Press the Up or Down arrow until Manager Mode is
displayed. Press the “X” button in the Size row.

Manager Mode
Entr Btn Combo

1

Enter the Service Menu.

Press the Up or Down arrow until Service Menu is
displayed. Press the Setup Code, which is “X” + “Cap.”
+ “XL”.

NOTE: If the code is not entered correctly, press the
Up arrow once and then the Down arrow once and re­enter the code.

Service Menu
Etr Setup Code

Service Menu
Load Cells

2

Press Select.

3

Navigate to the screen and view data. Press the Up

or Down arrow until the appropriate screen appears.
Choose:

A. Load Cell Counts to view the activation count.

B. Calibration Zero to view Load Cell 1 zero, Load

Cell 2 zero and Load Cell 3 zero.

C. Calibration Span to view Load Cell 1 span, Load

Cell 2 span and Load Cell 3 span.

4

Press the Home button to return to the main menu.

5

Solenoids – Test Cycling/Viewing Status

Enter the Manager Menu.

Press the Up or Down arrow until Manager Mode is
displayed. Press the “X” button in the Size row.

Manager Mode
Entr Btn Combo

1

Enter the Service Menu.

Press the Up or Down arrow until Service Menu is
displayed. Press the Setup Code, which is “X” + “Cap.”
+ “XL”.

NOTE: If the code is not entered correctly, press the
Up arrow once and then the Down arrow once and re­enter the code.

Service Menu
Etr Setup Code

Service Menu
Load Cells

2

Navigate to the Service Menu Solenoids screen.

Press the Up or Down arrow until the screen appears.

Service Menu
Solenoids

3

Press Select.

4

Navigate to the desired screen (Milk Solenoid,
Cream Solenoid, Skim Solenoid).

Press the Down arrow until the appropriate screen
appears.

Milk Solenoid
S=ON L=OFF

5

Cycle the solenoid.

A. Use the “S” button on the display to turn on the

solenoid.

B. Use the “L” button on the display to turn off the

solenoid.

C. Use the Down arrow to move on to the next screen.

NOTE: After the Skim Solenoid screen are lifetime
cycle counts for the three solenoids.

Milk Sol. Cyl.
XXXX

6

Press the Home button to return to the main menu.

7

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Compressor – Test Cycling/Setting Up

Enter the Manager Menu.

Press the Up or Down arrow until Manager Mode is
displayed. Press the “X” button in the Size row.

Manager Mode
Entr Btn Combo

1

Enter the Service Menu.

Press the Up or Down arrow until Service Menu is
displayed. Press the Setup Code, which is “X” + “Cap.”
+ “XL”.

NOTE: If the code is not entered correctly, press the
Up arrow once and then the Down arrow once and re­enter the code.

Service Menu
Etr Setup Code

Service Menu
Load Cells

2

Navigate to the Service Menu Temp/Compressor
screen. Press the Up or Down arrow until the screen

appears.

Service Menu
Temp/Compressor

3

Press Select.

4

Navigate to the screen and change settings. Press

the Up or Down arrow until the appropriate screen
appears. Choose:

A. Temp/Compressor/Short Cycle Timer to change

the compressor’s timer.

1. Press Select to initiate the change.

2. Press the Up or Down arrow to choose the
desired time in minutes.

3. Press Select again to accept the change.

B. Temp/Compressor/Temp Offset to change the

temperature offset between probe and display.

1. Press Select to initiate the change.

2. Press the Up or Down arrow to choose the offset.

3. Press Select again to accept the change.

C. Temp/Compressor/Temp Diff to change the

compressors’ temperature differential between set
point and cutout.

1. Press Select to initiate the change.

2. Press the Up or Down arrow to change the
differential.

3. Press Select again to accept the change.

D. Compressor S = ON L = OFF to force the

compressor ON/OFF.

1. Press Select to initiate the change.

2. Press the “S” on the display to turn the
compressor on or press the “L” on the display to
turn the compressor off.

3. Press Select again to accept the change.

Temp/Compressor
Scycle Timer: XX

Temp/Compressor
Temp Offset XX

Temp/Compressor
Temp Diff: XX

Compressor
S=ON L=OFF

5

Press the Home button to return to the main menu

or choose another setting to change.

6

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Troubleshooting Guide

Model SKBD3LS

PROBLEM PROBABLE CAUSE SOLUTION

Not dispensing accurately Containers not in correct position Check container position (L,C,R).

Wrong tubes being used Use Silver King tubes only (Part No. 37222).

Unit out of calibration Run daily calibration (See Calibrating the Unit).

Valve hanging up Replace valve.

Not dispensing Container empty Fill container.

Bad relay Replace relay.

Bad solenoid Replace solenoid.

Poor connect to solenoid Check connection.

Broken valve Replace valve.

Buttons not responding Replace door.

“CHECK (Product name) LC” is
displayed

“EMPT” is displayed when
container is full

Display is blank Unit not receiving power Check that service cord is firmly connected to the wall socket and

Unit will not stop dispensing Bad relay Replace relay.

Ice buildup Door not sealing Check that door is properly closed. Close the tank covers, the top

Bad connection Replace load cell.

Bad terminal board Replace terminal board.

Unit needs to be zeroed See Zeroing Out the Load Cells.

Bad load cell Replace load cell.

the unit, and the power switch is in the “ON” position.

Door cable Check door cable to make sure it is secure. If secure, replace

cable.

Bad power supply Replace power supply.

Bad display Replace door.

Bad valve Replace valve.

Bad solenoid Replace solenoid.

access door, and then the front door of the unit. NOTE: Closing

front door before top access can create a gap which may lead to
increased ice buildup and/or warm dairy product.

Bad gasket Replace gasket.

Bad temperature probe Replace probe.

P

RINC

E

C

A

STL

E

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Accessing/Servicing Components from the Front

Door-Display Connector Cable • Door Assembly, Door Gasket • Temperature Probe

• Valve Plunger Assemblies • Solenoids, Solenoid Rack Assembly • Control Board

• Relays • Terminal Board • Power Supply • Load Cell Assemblies

Risk of Electric Shock.

Always unplug the power cord before servicing the unit to
avoid electric shock.

WARNING

Silver King tubes (Part No. 37222) must be on order for this unit.
Be sure to have 3 clamps available to manually close the tubes
for any service activity that may require opening the product
valves while the tanks contain product. Office supply binder clips
work well.

IMPORTANT

Turn off the power
switch and
unplug the unit.

The power switch is
on the left side of
the unit near the
front.

1

Uninstall the cup guide and the drip tray.

Cup Guide

Drip Tray

Mount

Drip Tray

Mount

2

Remove the panel. Remove the 4 screws and remove

the lower front panel.

3

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Accessing/Servicing Components from the Front (continued)

G

H

I

J

A

B

C

D

F

E

Door-Display
Connector Cable.

Always ensure the
connections are
secure.

Replace by hand­tightening the
threaded connectors.

A

Door Assembly, Door Gasket.

The display is part of the door assembly.

B

Temperature Probe.

The temperature probe is behind a shield in the right
rear of the tank cavity.

C

Valve Plunger Assemblies.

If a valve is not working, take an ohm reading at the clip
disconnect.

D

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Accessing/Servicing Components from the Front (continued)

Solenoids, Solenoid Rack Assembly.

Solenoids can be replaced individually. To remove the
solenoid rack assembly, loosen the two captured
screws and pull the rack down.

E

Control Board.

The control board simply slides out from the control
assembly.

After replacing the control board, it will be necessary to
zero out the load cells for proper operation. Follow the
instructions, Zeroing Out the Load Cells.

F

Relays.

To better access the relays, loosen the 2 nuts that
attach the control assembly to the unit and remove the
whole control assembly.

Center

(Cream)

Compressor

Right

(Skim)

Left

(Milk)

G

Terminal Board.

To better access the terminal board, loosen the 2 nuts
that attach the control assembly to the unit and remove
the whole control assembly.

The terminal board is labeled for each connection.

H

Power Supply.

To better access the power supply, loosen the 2 nuts
that attach the control assembly to the unit and remove
the whole control assembly.

I

Load Cell Assemblies.

To remove a load cell:

1. Access the unit from both the front and rear.

2. At the front, disconnect the load cell connector
from the terminal board.

3. Cut the wire tie.

4. Remove the 4 screws that hold the assembly.

5. Pull the load cell through the load cell mounting
hole, making sure to guide the cable through
carefully from the rear to prevent cutting the load
cell cable insulation.

To install a load cell, reverse the removal process.
After replacing a load cell, it will be necessary to zero

out the load cells for proper operation. Follow the
instructions, Zeroing Out the Load Cells.

J

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Accessing/Servicing Components from the Rear

Fan Assembly • Compressor Start Components • Compressor • Load Cell Assemblies

Risk of Electric Shock.

Always unplug the power cord before servicing the unit to
avoid electric shock.

WARNING

Silver King tubes (Part No. 37222/DCP SKU 711490) must be
used for this unit. Be sure to have 3 clamps available to manually
close the tubes for any service activity that may require opening
the product valves while the tanks contain product. Office supply
binder clips work well.

IMPORTANT

Turn off the power
switch and
unplug the unit.

The power switch is
on the left side of
the unit near the
front.

1

Remove the panel(s). Remove the 8 screws and

remove the main rear panel. To access the load cell
assemblies, remove the 4 screws and remove the load
cell access panel.

2

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Accessing/Servicing Components from the Rear (continued)

D

A

B

C

Fan Assembly.

Without accessing, a non-working fan is evident when
no air is flowing out of the top rear of the unit.

A

Compressor Start Components.

To access the overload and start relay, pop off the gray
cover.

B

Compressor.

The compressor is a closed system. To service the
compressor, a service valve must be provided.

C

Load Cell Assemblies.

To remove a load cell:

1. Access the unit from both the front and rear.

2. At the front, disconnect the load cell connector
from the terminal board.

3. Cut the wire tie.

4. Remove the 4 screws that hold the assembly.

5. Pull the load cell through the load cell mounting
hole, making sure to guide the cable through
carefully from the rear to prevent cutting the load
cell cable insulation.

To install a load cell, reverse the removal process..
After replacing a load cell, it will be necessary to zero

out the load cells for proper operation. Follow the
instructions, Zeroing Out the Load Cells.

D

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Parts List and Exploded View

NOTE: To order Parts/Service, Contact Silver King Refrigeration at 800-328-3329 for technical assistance.

Item NoPart

No Description

1 25226S Hinge w/Screws & Covers
2 25227S Latch
3 36954S Lid Gasket SKBD3LS
4 36955S Lid Assembly SKBD3LS
5 36956S Door Gasket SKBD3LS
6 36957S Door Assembly SKBD3LS
7 36992S Control Board
8 37016S Condenser Coil SKBD3LS

9 37052S Platform for Drip Tray
10 37068S Container Assembly Left
11 37069S Container Assembly Center
12 37070S Container Assembly Right
13 811-006S Lid, Container SKBD3LS
14 37133S Valve Plunger Assembly
15 37146S Power Supply

16 37147S Relay
17 37461S Solenoid Rack Assembly
18 37168S Load Cell Assembly SKBD3LS
19 37202S Fan Assembly SKBD3LS
20 37210S Connector, Door-Display SKBD3LS
21 37222 3" Tubes (Carton of 300)
22 37239S Rocker Switch SKBD3LS
23 37281S Drip Tray SKBD3LS
24 37364S Probe Temp SKBD3LS
25 37436S Upper Cup Guide
26 37485S Solenoid
27 10343-02 Compressor 115V/60HZ EMI30HER

10344-02 Electricals - Compressor

28 37358S USB Hole Plug - 1" Dia

Item NoPart

No Description

22 11 3 4 1 19 8

6

5

13

10

20

7

14

15

16

18

26

17

21

24

12

2

28

27

9

23

25

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Wiring Diagram

POWER
SUPPLY

4
3
2
1

LOAD CELLS

LEFT

CENTER

TEMP

SENSOR

BATTERY

CR2032H

CONTROL

BOARD

DATA

CABLE

TO

DOOR

CONNECTOR

BOARD

DISPLAY

#1

#2

#3

COMPRESSOR

RELAY

SOLENOIDS

POWER
SWITCH

TERMINAL

BLOCK

COND

FAN

COMP

OVERLOAD

RELAY

RED

WHITE

WHITE

SOLENOID

RELAYS

POWER CORD
115V/60HZ

BLACK

WHITE

SKBD3LS

36946

REV: B

RED

#1 LEFT

#2 CENTER

#3 RIGHT

GROUND

120V AC

IN

BLACK

(-)

RED (+)

#1
#2
#3

GROUND

RED

AS VIEWED
FROM FRONT
OF MACHINE

AS VIEWED
FROM FRONT
OF MACHINE

←

24V DC

OUT

RIGHT

RED (+)

BLACK

(-)

RED

WHITE

RED

FUSE

T10AL250VP

RED

WHITE

GRAY

BLACK

BLUE

BLUE

BROWN

BLUE

BROWN

BROWN

BROWN

BLUE

WHITE

WHITE

RED

RED

RED

BLACK

BLACK

BLACK

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