H.c duke & son 959r Setup guide

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H.C. Duke & Son, Inc. P/N 184981 February 2007 Printed in U.S.A.

OPERATOR'S MANUAL

with ILLUSTRATED PARTS LIST

TWIN TWIST

SOFTSERVEFREEZER

MODEL959R

184981 - 2/07

i

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123456789012345

DUKE Model 959R Soft Serve Freezer

184981

Operator’s Manual

for the

Soft Serve Twist Freezer

Model 959R

ii

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DUKE Model 959R Soft Serve Freezer

184981

SAFETY FIRST!

Follow these four steps to safety ....

WARNING

DANGER

When you see this symbol on your 959R or in this manual,

be alert to the potential for personal injury. Follow recom-

mended precautions and safe operating practices.

The signal words — DANGER, WARNING and CAU-

TION — are used with the safety alert symbol. (DANGER

decals on the freezer may or may not have the safety alert

symbol, but the message is the same.) Decals with the

words DANGER, WARNING, or CAUTION appear on the

959R. DANGER identifies the most serious hazard.

Decals with the words DANGER or WARNING are typi-

cally near specific hazards on the 959R. General precau-

tions are listed on CAUTION safety decals.

In this manual, CAUTION messages with the safety alert

symbol call attention to safety messages.

CAUTION

1. Recognize Safety Information ....Look for this

safety alert symbol throughout this manual.

2. Understand Signal Words ....

iii

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123456789012345

DUKE Model 959R Soft Serve Freezer

184981

SAFETY FIRST!

3. Follow Safety Instructions ....

4. Operate Safely ....

Read and understand all safety messages in this manual

and on your 959R. Take notice of the location of all decals

on the 959R and keep the safety decals in good condi-

tion. Check them periodically and replace missing, dam-

aged, or illegible safety decals. The safety decals must

remain in place and legible for the life of the 959R. If you

need new decals, use the information and illustrations on

pages iv and v of this manual to identify the decal and

order replacements.

DONOT attempt to operate the 959R Twin Twist Soft

Serve Freezer until you read and understand all safety

messages and the operating instructions in this

manual.

DONOTallow untrained personnel to maintain and/

or service this machine. Failure to follow this instruc-

tion may result in severe personal injury.

DONOToperate the 959R until all service and

access covers are secured with screws. DONOT

attempt to repair or maintain the 959R until the main

power supply has been disconnected. Some freezers

have more than one disconnect switch. Contact H.C.

Duke & Son, Inc. Service Department for original

equipment parts.

iv

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123456789012345

DUKE Model 959R Soft Serve Freezer

184981

1HC165025 Decal—Beater Warning (1)

2HC165126 Decal—Panel Removal Warning (3)

Do not attempt to operate the freezer until

all safety precautions and operating instruc-

tions in this manual are read and under-

stood.

Take notice of all warning, caution, instruc-

tion and information decals (or labels) on the

freezer as shown in the figure on the next

page. The labels have been put there to help

maintain a safe working environment.

The labels have been designed to withstand

washing and cleaning. All labels must

remain legible for the life of the freezer.

Labels should be checked periodically to be

sure they can be recognized as warning

labels.

If it is necessary to replace any label,

please contact H. C. Duke & Son. When

ready to order you will need to determine

the (1) part number, (2) type of label, (3)

location of label, and (4) quantity required,

and include a return shipping address.

You may contact H. C. Duke & Son, Inc.,

Service Department at

Phone: (309) 755-4553

o r (800) 755-4545

FAX: (309) 755-9858

E-mail: [email protected]

(The decals on the next page are numbered

1 and 2. Those numbers correspond to the

numbers in the table below. The table

provides the part number, description, and

quantity for each decal.)

Safety Decal Locations



No. Part No. Description (Qty.)

v

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123456789012345

DUKE Model 959R Soft Serve Freezer

184981

Safety Decal Locations

WARNING

!

Hazardous moving parts.

Machine starts automatically.

Do not operate with panel

removed.

P/N HC165126

2

P/N HC165025

1

Before removing dispense head:

1. Turn all control switches to "OFF", and

2. Disconnect all power supplies. Unit may

have more than one power supply.

Hazardous rotating beater shaft. Do not

operate unit with dispense head removed

.

vi

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DUKE Model 959R Soft Serve Freezer

184981

TABLE OF CONTENTS

SAFETY .............................................................................................................. ii

SAFETY DECAL LOCATIONS ............................................................................. iv

PART 1

1 INTRODUCTION ................................................................................... 1

2 NOTE TO INSTALLER ........................................................................... 1

2.1 Uncrating and Inspection ........................................................... 2

2.2 Installation.................................................................................. 3

2.3 Electrical Requirements ............................................................. 3

2.4 Electrical Connections ............................................................... 4

3 SPECIFICATIONS ................................................................................. 5

3.1 Particulars.................................................................................. 5

3.2 Dimensions ................................................................................. 5

3.3 Data Plate ................................................................................... 6

3.4 Reference Information ............................................................... 6

3.5 Installatin Date ........................................................................... 7

4 PART NAMES AND FUNCTIONS ........................................................... 8

5 OPERATOR CONTROLS ..................................................................... 12

6 DISASSEMBLY AND CLEANING ......................................................... 15

6.1 Cleaning Accessories .............................................................. 16

6.2 Disassembly Instructions ......................................................... 17

6.3 Cleaning Instructions ............................................................... 19

7 ASSEMBLY ........................................................................................ 22

vii

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DUKE Model 959R Soft Serve Freezer

184981

8 STARTUP INSTRUCTIONS ................................................................. 24

8.1 Sanitizing .................................................................................. 24

8.2 Priming ..................................................................................... 25

8.3 Dispensing Product .................................................................. 27

9 CLOSING PROCEDURES ................................................................... 28

9.1 Draining Product ...................................................................... 28

10 GENERAL INFORMATION .................................................................. 29

10.1 Dairy Queen Mix........................................................................ 29

10.2 Checking the Frozen DQ Product. ............................................ 29

10.3 Product Temperature ............................................................... 30

10.4 Overrun .................................................................................... 30

10.5 Overrun Measurement ............................................................. 30

10.6 Overrun Chart .......................................................................... 31

10.7 Overrun Adjustment ................................................................. 32

10.8 Rerun ....................................................................................... 32

11 ROUTINE MAINTENANCE ................................................................... 33

12 TROUBLESHOOTING TABLES ........................................................... 37

PART II

MODEL 959R REPLACEMENT PARTS w/ ILLUSTRATIONS ............................................ *

*Refer to Part II Table of Contents for help with locating part numbers and illustrations.

184981

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1

DUKE Model 959R Soft Serve Freezer

2 Note to Installer

Thisfreezermust beinstalled andservicedby aqualified servicetechnicianin

accordancewith theinstallation instructions.

Afterinstallationthewarrantyregistrationcardmustbecompletedandreturnedto

validatewarrranty.

1 Introduction

The 959R Freezer is designed to produce

DQ soft serve ice cream or DQ frozen

yogurt, with a product serving temperature

of 18 to 19ºF (-8 to -7ºC). Use of other

products in this machine is considered

misuse (see Warranty.)

This manual has been prepared to assist in

the training of personnel on the proper

operation and general maintenance of

your Duke freezer.

Your freezer will not compensate for or

correct any assembly or priming errors

made during the initial start-up. There-

fore, it is extremely important to follow

the assembly and priming procedures

detailed in this manual.

Make sure all personnel responsible for

equipment operation completely read

and understand this manual before

operating the freezer. When properly

operated and maintained, your freezer

will produce a consistent quality product.

Name ______________________

Address_____________________

____________________________

Phone_______________________

or H.C. Duke & Son, Inc., Service Depart-

ment for factory service assistance.

Telephone: (309) 755-4553

or (800) 755-4545

Fax: (309) 755-9858

E-mail: [email protected]

If you require technical assistance,

please contact your local H.C. Duke & Son

service company:



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2 184981

DUKE Model 959R Soft Serve Freezer

2.1 Uncrating and Inspection

Figure 2-1 Machine Bolted to Shipping Base

CAUTION

Be sure to properly support

the machine when removing

bolts and installing legs or

casters.

When the unit is received and while the

carrier is still present, inspect the ship-

ping carton for any damage that may

have occurred in transit. If the

SHOCKWATCH

®

label indicates red and/

or the carton is broken, torn, or punctured

note the damage on the carrier’s freight

bill and notify the carrier’s local agent

immediately, also note on the freight bill.

1. Remove the carton from the pallet,

and move the machine as close as

possible to the permanent location.

2. Remove the shipping bolts on the

bottom of the freezer (figure 2-1)

and install either the legs or casters

(figure 2-2).

Figure 2-2 Installing Mounting Legs or Casters

FRONT

NOTE: Screw casters

or legs all the way in

coupling, then adjust

out to level side to

side with 1/4 inch

slope to front.

184981

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3

DUKE Model 959R Soft Serve Freezer

2.2 Installation

1. Where codes permit, we recommend

that you install the freezer on casters

and have flexible water and electrical

connections for easier service and

cleaning ability.

2. All models require a minimum 6-inch

(15cm) clearance on the rear and side

panels for adequate ventilation.

3. Water cooled will require a 1/2" female

flare water inlet and water waste

connection. Both condensers are tied

together so that one water inlet and one

water waste are all that is required. The

connections are found on the back

panel and are clearly tagged - “Water

Inlet" and "Water Waste". A manual

shut-off valve should be installed in the

water inlet line at the time of installation.

Be sure to maintain inlet water pressure

above 35 psig and below 140 psig.

4. Place the freezer in the final location

and level the machine by adjusting

the legs or casters so that the unit is

level side-to-side, and the front is

approximately 1/4" lower than the

rear. This will allow proper drainage

of the freezing cylinder.

2.3 Electrical Requirements

2. Supply voltage must be within + 10%

of voltage indicated on nameplate.

Also, on three-phase systems,

voltage between phases must be

balanced within 2%. (More than a 6

volt difference between any two

voltage measurements at 208-230

volts indicates a possible imbalance.)

Request local power company to

correct any voltage problem.

3. An easily accessible main power

disconnect must be provided for all

poles of the wiring to the freezer.

CAUTION

To prevent accidental electrical

shock, a positive earth ground

is required.

1. Always verify electrical specifications

on the data plate of each individual

freezer. Data plate specifications will

always supersede the information in

this manual.

CAUTION

All materials and connections

must conform to local

requirements and be in

compliance with the National

Electrical Code (NEC).

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4 184981

DUKE Model 959R Soft Serve Freezer

2.4 Electrical Connections

1. Double freezers with two compres-

sors require one power supply for

each side of the freezer. Each side of

the freezer operates independently.

2. Check the data plate for fuse size, wire

ampacity and electrical specifications.

3. Refer to the wiring diagram provided for

proper power connections.

4. Electrical connections are made in the

junction box(es) located mid-level behind

the back panel.

5. Use a flexible connection when permis-

sible. All materials and connections

must conform to local codes and/or the

National Electrical Code.

6. Beater shaft rotation must be clockwise

as viewed from the front of the freezer.

CAUTION

To prevent accidental electrical

shock, a positive earth ground

is required.

184981

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5

DUKE Model 959R Soft Serve Freezer

3 Specifications

Always check and verify voltage and amperage on the data plate located on the back panel of

each freezer.

MODEL959R

3.1 Particulars

Figure3-1

3.2 Dimensions

Width-in./cm 16/40.6

Height-in./cm 58/147.3

Depth-in./cm 36/91.4

Weight-lbs./kg 680/308.4

Compressor* 3 H.P. /11,000 (BTUH)

2.2 kw (Motor)

3.2 kw (Cooling)

Beater Motor 2 H.P/1.5 kw

Refrigerant 404a

Charge (Water Cooled) 3.75 lb/1.70 kg

Cylinder (Two) 4 Qts./3.8 Liters

(each)

*Contact factory for other voltages.

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6 184981

DUKE Model 959R Soft Serve Freezer

3.3 Data Plate

The data plate provides important informa-

tion that the operator should record and

have available for parts ordering, warranty

inquiries, and service requests.

Figure 3-2 Data Plate

(

Write in

Reference Informa-

tion HERE!

3.4 Reference Information

Fill in the following information below as

soon as you receive the 959R. (The item

numbers—encircled, below—correspond

with the callout numbers above.)

IMPORTANT: Completefor reference:

1 Model Number:___________________

2 Serial Number:___________________

3 Electrical Spec: Voltage ________

Phase _______ Hertz _____________

4 Minimum Circuit Ampacity:_________

5 Maximum Fuse Size: _____________

184981

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7

DUKE Model 959R Soft Serve Freezer

3.5 Installation Date

Fill in the date of installation, and the name, address, and phone number of the

installer in the space provided below. This information will be needed when ordering

parts or service for your freezer.

Installation Date: ______________________________

Installed by: ______________________________

Address: ______________________________

______________________________

Phone: ______________________________

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8 184981

DUKE Model 959R Soft Serve Freezer

4 Part Names and Functions

Figure4-1 HeadAssembly

184981

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9

DUKE Model 959R Soft Serve Freezer

6 KNOB - HAND

Secures the head to the freezing

cylinder.

7 EXTENSION - SPIGOT

(Accessory)

Extends the product opening down

to aid in cake-making process.

8 O-RING - HEAD

Seals the head to the freezing

cylinder. Must be lubricated.

9 O-RING - PLUG

Seals the air bleed plug in the

head.

10

PLUG - AIR BLEED

(BLEEDER-ASSY)

Seals the air bleed opening in the

head when closed. Allows excess

air to be removed from the cylinder

when priming.

1 HEAD

Encloses the freezing cylinder and

provides an opening for product to be

dispensed.

NOTE:Beater motors willnot

operate with the head removed

from the freezer.

2 SPIGOT-ASSEMBLY

Seals the product opening in the head

when closed. Allows product to flow

when open.

3 O-RING-SPIGOT

Seals the spigot in the head. Must be

lubricated to seal and slide properly.

4 O-RING-SPIGOTEXTENSION

Holds the extension on to the spigot.

5 ROD-SPIGOT

Starts the freezer when dispensing.

Must be in place before freezer will

operate.

4 Part Names and Functions – continued

The following descriptions apply to figure 4-1. The number preceding the part

name corresponds to the number in the figure.

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10 184981

DUKE Model 959R Soft Serve Freezer

4 Part Names and Functions – continued

Figure 4-2 Beater Shaft

The following descriptions apply to figure 4-2. The number preceding the part

name corresponds to the number in the figure.

1 BUSHING - CYLINDER

Holds the beater in place at the front

of the cylinder. Must be lubricated.

2 SHAFT - BEATER

Rotates in the freezing cylinder,

blending air and mix as it ejects

product.

3 BLADE - SCRAPER

Scrapes the frozen product from the

freezing cylinder wall.

4 O-RING - SHAFT SEAL

Seals the beater shaft to the shaft

seal. Is inserted into the shaft seal

bushing. Must be lubricated.

5 WASHER - SHAFT SEAL

Holds the shaft seal o-ring. Lightly

lubricate the side opposite the cup

seal.

6 SEAL(CUP)-BEATERSHAFT

Seals the opening between the

freezing cylinder and the beater shaft.

Donotlubricaterubbercupportion.

NOTE: Items 4, 5, and 6 are available as an

assembly.

184981

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11

DUKE Model 959R Soft Serve Freezer

The part name and description below in figure 4-3 may be used with this freezer.

Accessory

Figure 4-3 Duke Remote Mix Transfer System (RMT)

1 REMOTE MIX TRANSFER (RMT)

SYSTEM with Shelf (Accessory)

Transfers mix and air from cooler

to the freezing cylinder. See RMT

manual.

4 Part Names and Functions – continued

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12 184981

DUKE Model 959R Soft Serve Freezer

5 Operator Controls

A. “CLEAN” (Left Position) - This

position operates the beater only (no

refrigeration). Always use this position

for cleaning and sanitizing procedures.

B. “OFF”(Center Position) - In this

position the beater motor and refrigera-

tion system will not operate.

5. 1 Selector Switch 1

C. “AUTO” (Right Position) - This position

activates both the beater motor and

refrigeration unit. This is the normal

operating position.

IMPORTANT:

DONOT usethe AUTOpositionwith

wateror sanitizerinthe cylinder–the

freezerwill be damaged.

Figure5-1

CAUTION

Test operation ofthe head

switchprior to placingthe

freezer in service. See

Section11,Routine

Maintenance,Monthly.

The following paragraphs describe the

operator controls and indicators. Refer to

figure 5-1 for location of these controls and

indicators on the freezer.

NOTE: The head must be in place before

the beater will operate.

This three-position switch controls the functions of your freezer.

H.C Duke & Son 959R Setup guide

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