Duke 707pr User manual

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H.C. Duke & Son, Inc. P/N 184600 July 2005 Printed In U.S.A.

Model 707PR

Shake Freezer

P/N 184600 7/05

Operator’s Manual

with Illustrated Parts List

184600

Operator’s Manual

for

Duke Shake Freezer

Model 707PR

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DANGER

The signal words — DANGER, WARNING and

CAUTION — 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 freezer. DANGER iden-

tifies the most serious hazard. Decals with the

words DANGER or WARNING are typically near

specific hazards on the freezer. General precau-

tions are listed on CAUTION safety decals. In this

manual, CAUTION messages with the safety alert

symbol call attention to safety messages.

Duke Shake Freeze Model 707PR

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

alert symbol throughout this manual.

When you see this symbol on your freezer or in

this manual, be alert to the potential for personal

injury. Follow recommended precautions and safe

operating practices.

2. Understand Signal Words ....

SAFETY FIRST!

Follow these four steps to safety ....

WARNING

CAUTION

ii

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3. Follow Safety Instructions ....

4. Operate Safely ....

SAFETY FIRST!

DO NOT allow untrained personnel to maintain or

service this machine. Failure to follow this

instruction may result in severe personal injury. DO

NOT operate the freezer unless all service panels

and access doors are secured with screws. DO

NOT attempt to maintain or repair the freezer until

the main power supply has been disconnected.

Contact H. C. Duke & Son for original equipment

parts.

Safety

First!

Duke Shake Freezer Model 707PR

iii

Read and understand all safety messages in this

manual. Read and understand the decal safety

messages on your freezer. Take notice of the

location of all decals on the freezer and keep the

safety decals in good condition. Check them

periodically and replace missing, damaged or

illegible safety decals. The safety decals must

remain in place and legible for the life of the

freezer. If you need new decals, use the

information and illustrations on pages v and vi of

this manual to identify the decal and order

replacements

DO NOT attempt to operate the 707PR shake

freezer until you read and understand all safety

messages and the operating instructions in this

manual.

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Safety Decal Locations

Duke Shake Freezer Model 707PR

No. Part No. Description (Qty)

1P/N 165025 Decal — Beater Warning (1)

2P/N 165126 Decal — Panel Removal Warning (3)

iv

For factory service assistance, contact

H. C. Duke & Son, Inc., Service

Department by phone, FAX or E-mail:

Phone: (309) 755-4553

(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.)



Do not attempt to operate the freezer

until all safety precautions and operat-

ing instructions in this manual are read

and understood.

Take notice of all warning, caution,

instruction 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. Check labels periodi-

cally to be sure they can be recognized

as warning labels.

If it is necessary to replace any label,

please contact H.C. Duke & Son, Inc.

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.

184600

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Duke Shake Freezer Model 707PR

v

Safety Decal Locations

2

WARNING

!

Hazardous moving parts.

Machine starts automatically.

Do not operate with panel

removed.

P/N 165025

1

Hazardous rotating beater shaft. Do not

operate unit with dispense head removed.

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.

P/N 165126

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Duke Shake Freeze Model 707PR

Safety First ..................................................................................... iii

Safety Decal Locations ................................................................... v

Part I

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 Installation Date ........................................................... 7

4 Part Names and Functions ............................................ 8

5 Operator Controls and Indicators ................................ 11

5.1 Selector Switch............................................................ 11

5.2 Reset — Overload ........................................................ 11

5.3 Mix Pump Switch .......................................................... 12

5.4 Spindle Outlet .............................................................. 12

5.5 Timer ........................................................................... 12

5.6 Spindle ON-OFF-JOG Switch ........................................ 12

5.7 General Purpose Outlet................................................ 12

5.8 Pilot Lights ................................................................... 13

5.9 Foot Pedal (optional) .................................................... 13

Table of Contents

vi

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Duke Shake Freeze Model 707PR

Table of Contents

6 Disassembly and Cleaning ............................................ 14

6.1 Cleaning Accessories .................................................. 15

6.2 Disassembly Instructions ............................................. 16

7 Assembly .......................................................................... 20

8 Start-up Instructions ...................................................... 23

8.1 Sanitizing ..................................................................... 23

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

9 Closing Procedures ........................................................ 26

9.1 Draining Product .......................................................... 26

10 Product Information ....................................................... 27

10.1 Dairy Queen®Mix ......................................................... 27

10.2 Checking the Frozen DQ©Product ................................ 27

10.3 Product Temperature ................................................... 28

10.4 Overrun ....................................................................... 28

10.5 Overrun Chart .............................................................. 29

10.6 Overrun Adjustment ..................................................... 30

10.7 Rerun ........................................................................... 30

11 Routine Maintenance ..................................................... 31

12 Troubleshooting Table ................................................... 36

Part II

Model 707PR Replacement Parts Manual with Illustrations ... *

vii

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

illustrations.

DUKE Shake Freezer Model 707PR

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184600

1

1 Introduction

This freezer is designed to produce DQ

®

shakes with a product serving tempera-

ture range of 27° to 30°F (-3 to-1°C). If

such products are prepared from a

powdered concentrate, they should be

precooled to 40°F (4.4°C) prior to

introduction to the freezer. Use of other

products in this machine is considered

misuse (see Warranty).

This manual has been prepared to

assist you in the proper operation and

general maintenance of the Duke Model

707PR Shake Freezer.

Your freezer will not compensate for or

correct any assembly or priming errors

made during the initial start-up. There-

fore, it is important to follow the assem-

bly 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, the freezer

will produce a consistent quality prod-

uct.

If you require technical assistance,

please contact your local service com-

pany as follows:





Name: _________________________

Address: ________________________

_________________________

Phone: _________________________

For factory service assistance — contact

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

ment as follows:

Phone: (309) 755-4553

FAX: (309) 755-9858

E-mail: [email protected]

2 Note to Installer

This freezer must be installed and serviced by a service techni-

cian in accordance with the installation instructions.

After installation the warranty registration card must be com-

pleted and returned to validate the warranty.

DUKE Shake Freezer Model 707PR

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2

184600

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 perma-

nent 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.

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12345678901234

184600

3

2.2 Installation

1. Where codes permit, we recommend

that you install the freezer on casters

and have flexible water and electri-

cal connections for service and

cleaning ability.

2. A minimum clearance of 6-inches is

required on the rear and side panels

for adequate ventilation.

3. Water cooled models require a 3/8-

inch female flare water inlet and

water waste connection. The con-

nections are found on the back of

the freezer 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. The water pres-

sure must be between 35-140 psig

(241-965 kPa) for proper operation.

4. Place the freezer in its 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).

DUKE Shake Freezer Model 707PR

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4

184600

2.4 Electrical Connections

4. Use a flexible connection when

permissible. All materials and

connections must conform to local

codes and the National Electric

Code.

5. For 3 phase freezers, 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.

1. Check the data plate for fuse size,

wire ampacity, and electrical

specifications.

2. Refer to the wiring diagram pro-

vided for proper power connec-

tions.

3. Electrical connections are made in

the junction box located mid-level

behind the rear panel for water

cooled freezers and mid-level

behind the front panel for air

cooled freezers.

DUKE Shake Freezer Model 707PR

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184600

5

3 Specifications

Always check and verify voltage and

amperage on the data plate located on

the back panel of each freezer.

Width (in/cm) 16/41

Height (in/cm 58/147

Depth (in/cm) 30/76

Weight (lbs/kg) 410/186

Compressor 1.5 HP/9200 BTUH

1.1 kw (Motor)

2.7 kw (Cooling)

3.1 Particulars

Beater Motor 1.5 HP/1.1 kw

Refrigerant 404a

Charge 3.75 lbs/1.7kg

Cylinder 7 qts/6.2 liters

*Contact factory for other voltages.

3.2 Dimensions

Figure 3-1 Model 707PR Dimensions

DUKE Shake Freezer Model 707PR

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6

184600

3.4 Reference Information

Fill in the following information as soon

as you receive the Duke 707PR Shake

Freezer. (The item numbers — encircled,

below — correspond with the callout

numbers in figure 3-2.)

1 Model Number: __________________

2 Serial Number: __________________

3 Electrical Spec: Voltage ________

Phase _______ Hertz _________

4 Minimum Circuit Ampacity: _______

5 Maximum Fuse Size: ____________

707PR

(

Write in

Reference Information

HERE!

3.3 Data Plate

The data plate provides important

information that the operator should

record and have available for parts

ordering, warranty and service requests.

Figure 3-2 Data Plate

DUKE Shake Freezer Model 707PR

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184600

7

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 the 707PR Shake Freezer.

Date of installation: __________________________________

Installed by: __________________________________

Address: __________________________________

__________________________________

Phone: __________________________________

DUKE Shake Freezer Model 707PR

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8

184600

4 Part Names and Functions

Figure 4-1 Head Assembly

ROD-PLUNGER

PLUNGER-DISPENS-

ING

O-RING-PLUNGER

(UPPER)

O-RING-PLUNGER

(LOWER)

O-RING-HEAD

BUSHING-HEAD

HEAD-ASSY.DIS-

PENSE

SPINDLE-ASSY.

O-RING-SPINDLE

POST-PIVOT(OPTIONAL)

O-RING-PIVOTPOST

(OPTIONAL)

HANDLE-ASSY.

KEEPER-ASSY.

PIN-GUIDE(OPTIONAL)

O-RING-GUIDEPIN

(OPTIONAL)

O-RING-PLUG

KNOB-HAND

PLUG-AIRRELIEF

KNOB-HAND

DUKE Shake Freezer Model 707PR

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184600

9

4 Part Names and Functions — continued

1 HEAD - DISPENSE

Encloses the freezing cylinder and

provides an opening for product to

be dispensed.

2 BUSHING - HEAD

Holds the beater in place at the front

of the cylinder. Must be inserted into

the head and lubricated before

assembly.

3 O-RING - HEAD

Seals the head to the freezing

cylinder. Must be lubricated.

4

and

5 O-RINGS - PLUNGER

Seals the plunger in the head. Must

be lubricated to seal and slide

properly.

6 PLUNGER

Seals the product opening in the

head when closed. Allows product to

flow when open.

7 ROD - PLUNGER

Starts the freezer when dispensing.

Must be in place before freezer will

operate.

8 SPINDLE - Assy.

Mixes the shake as it is dispensed.

9 O-RING - SPINDLE/PIVOT POST

Holds the spindle or pivot post in

place.

10 HANDLE - DISPENSE

Opens and closes the plunger to

start and stop the flow of product

from the freezer.

The following part names and descriptions refer to figure 4-1.

12 KEEPER

Secures the handle to the head.

12 PIN - GUIDE (Optional)

Secures the pivot post in the head.

13 O-RING - GUIDE PIN (Optional)

Holds the guide pin in place.

14 PLUG - AIR RELIEF

Seals the air relief opening in the

head when closed. Allows excess

air to be removed from the cylinder

when filling.

15 KNOB - HAND

Secures the head to the freezing

cylinder.

16 O-RING - PLUG

Seals the air relief screw in the

head.

17 POST - PIVOT (Optional)

Holds the handle in place when the

spindle is not used.

DUKE Shake Freezer Model 707PR

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10

184600

4 Part Names and Functions — continued

Figure 4-2

1 BLADE - SCRAPER

Scrapes the frozen product from

the freezing cylinder wall.

2 SHAFT - BEATER

Rotates in the freezing cylinder,

blending air and mix and ejecting

product.

3 O-RING-SHAFT SEAL

Seals the beater shaft to the shaft

seal. Is inserted into the shaft seal

WASHER. Must be lubricated.

4 WASHER-SHAFT SEAL

Holds the shaft seal o-ring.

Lightly lubricate the side

opposite the cup seal.

5 SEAL(CUP)-BEATER SHAFT

Seals the opening between

the freezing cylinder and the

beater shaft. Do not lubricate

rubber cup portion.

The following part names and descriptions refer to figure 4-2.

DUKE Shake Freezer Model 707PR

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184600

11

5 Operator Controls and Indicators

The following paragraphs describe the

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.

CAUTION

Test operation of the head

switch prior to placing the

freezer in service. See

section 11, Routine

Maintenance, Monthly.

This three-position switch selects the

operating mode of your freezer.

a. “CLEAN” (left) — This position

operates the beater only (no refrig-

eration). This position must be used

in all cleaning and sanitizing opera-

tions.

b. “OFF” (center) — In this position

the beater motor and cylinder

refrigeration system will not operate.

Important:

Do not use the “AUTO” position

with water or sanitizer in the

cylinder — the freezer will be

damaged.

c. “AUTO” (right) —- This position

activates both the beater motor and

refrigeration unit. This is the normal

operating position.

5.2 Reset-Overload 2

This control protects the beater motor

against failure from an overload condi-

tion by automatically shutting down the

freezer. To restart the freezer properly,

turn the selector switch to “OFF”, wait

2–3 minutes, then depress the red reset

button and turn the selector switch back

to the "AUTO" or CLEAN" position.

5.1 Selector Switch 1

Important:

If the overload trips frequently, your

freezer should be checked for

proper product temperature, over-

run and voltage. Contact your local

authorized refrigeration technician.

Figure 5-1

8

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12

184600

5.3 Mix Pump Switch 3

5.6 Spindle ON-OFF-JOG Switch 6

Part of the spindle motor, this switch is

located on the top front. This switch is

used for spindle operation.

5.4 Spindle Outlet 4

This control will bypass the thermostat

forcing the compressor and beater

motor to run for approximately 3 min-

utes. Use the timer for quick start-ups or

fast recovery when dispensing large

portions.

This two-position switch controls the

operation of the mix pump located in the

walk-in cooler, if plugged into the recep-

tacle located on the back panel of the

freezer.

a. “ON” (left) — Use this position to

fill the cylinder with mix or sanitizer

when the freezer is in the normal

operating mode and/or when remov-

ing product from the cylinder.

b. “OFF” (right) — In this position the

pump will not operate.

IMPORTANT:

DO NOT USE this outlet for any

equipment requiring more than 15

amps.

This is a 115V receptacle provided for

mix pumps or spindles.

5 Operator Controls and Indicators – continued

5.5 Timer 5

IMPORTANT:

Excessive use of the timer causes

freeze-up and damage to the freezer.

5.7 General Purpose Outlet 7

IMPORTANT:

DO NOT USE this outlet for any

equipment requiring more than 15

amps.

These are 115V receptacle multiple

purpose outlets.

Duke 707PR User manual

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