Duke 959R User manual

H.C. Duke & Son, LLC P/N 184981 November 2013 Printed in U.S.A.
High Capacity
Twin Twist
Soft Serve Freezer
Model 959R
184981 - 11/13
OPERATOR’S MANUAL
with Illustrated Parts List

iii
184981
Operator’s Manual
for the
Soft Serve Twist Freezer
Model 959R
All contents © Copyright 2014 H.C. Duke & Son, LLC 2116 Eighth Avenue, East Moline, Illinois 61244

iv
DUKE Model 959R Soft Serve Freezer
184981
SAFETY FIRST!
Follow these four steps to safety ....
WARNING
DANGER
DANGER
When you see this symbol on your 959R or in
this manual, be alert to the potential for personal
injury. Follow recommended precautions and safe
operating practices.
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 959R. DANGER
identies the most serious hazard. Decals with the
words DANGER or WARNING are typically near
specic hazards on the 959R. General precautions
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 ....

v
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 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 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.
DO NOT 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.
DO NOT allow untrained personnel to maintain
and/or service this machine. Failure to follow this
instruction may result in severe personal injury.
DO NOT operate the 959R until all service and
access covers are secured with screws. DO
NOT 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, LLC Service
Department for original equipment parts.
Safety
First!

vi
DUKE Model 959R Soft Serve Freezer
184981
1HC165025-01 Decal—Beater Warning Twist (1)
2HC165025-02 Decal—Beater Warning Black (1)
3HC165126 Decal—Panel Removal Warning (3)
Do not attempt to operate the freezer
until all safety precautions and operating
instructions in this manual are read and
understood.
Take notice of all warning, caution,
instruction and information decals (or la-
bels) on the freezer as shown in the gure
on the next page. The labels have been
put there to help maintain a safe working
environment.
The labels have been designed to with-
stand washing and cleaning. All labels
must remain legible for the life of the
freezer. Labels should be checked period-
ically 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, LLC,
Service Department at
Phone: [phone]
or [phone]
FAX: [phone]
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.)

vii
DUKE Model 959R Soft Serve Freezer
184981
Safety Decal Locations

viii
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

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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 Rerun32
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.