Vollrath Stoelting DQU411 Series User manual

A VOLLRATH® DIVISION
Model DQU411
Operator’s Manual
513687 Rev.2

2 DQU411-I2 OPERATOR’S MANUAL 513687 REV.2
Section 1: Introduction
MAINTENANCEPARTS TROUBLESHOOTING OPERATION INTRODUCTION
A VOLLRATH® DIVISION
This manual provides basic information about the machine. Instructions and suggestions are given covering its operation
and care. This manual follows the guidance set forth in the following industry standards: ANSI Z535.6, ASTM F760-93,
ASTM F1827-13, FDA Food Code.
The illustrations and specifications in this manual are not binding in detail. We reserve the right to make changes to the
machine without notice, and without incurring any obligation to modify or provide new parts for machines built prior to
date of change.
DO NOT ATTEMPT to operate the machine until instructions and safety precautions in this manual are read completely
and are thoroughly understood. If problems develop or questions arise in connection with installation, operation, or ser-
vicing of the machine, contact Stoelting White Glove Service.
For warranty information, visit stoeltingfoodservice.com
stoeltingfoodservice.com
Stoelting Foodservice Equipment
502 Highway 67
Kiel, WI 53042-1600
U.S.A.
White Glove Service Network
Phone: [phone]
© 2020 Stoelting

513687 REV.2 DQU411-I2 OPERATOR’S MANUAL 3
Section 1: Introduction
MAINTENANCE PARTSTROUBLESHOOTINGOPERATION
INTRODUCTION
This manual is divided into the following five sections:
A. Mix Pump Hose Replacement
B. Mix Pump Hose Cleaning
C. Fine Consistency Adjustment
D. Daily Procedures - Night
E. Daily Procedures Morning
MAINTENANCE
A. Auger Shaft & Front Door Parts
B. Cab Tubing
PARTS
A. Troubleshooting Flow Charts
TROUBLESHOOTING
A. Empty the Freezing Cylinders - Start here if cleaning a machine with mix in it
B. Disassemble Parts - Start here if cleaning an empty machine
C. Cleaning Disassembled Parts
D. Cleaning the Machine
E. Assembling the Machine
F. Sanitizing
G. Freeze Down
H. Lubrication Points
I. Pump Hose Routing
OPERATION
A. Parts of the Machine
B. Specifications
INTRODUCTION

4 DQU411-I2 OPERATOR’S MANUAL 513687 REV.2
Section 1: Introduction
MAINTENANCEPARTS TROUBLESHOOTING OPERATION INTRODUCTION
A. Parts of the DQU411-I2 Machine
IntelliTec2™
Freezing Cylinder
Cabinet
IntelliTec2™ Touchpad
Spigot Handle

513687 REV.2 DQU411-I2 OPERATOR’S MANUAL 5
Section 1: Introduction
MAINTENANCE PARTSTROUBLESHOOTINGOPERATION
INTRODUCTION
B. DQU411-I2 Specifications
68 3/8"
A/C
W/C
66 7/8"
Air Out
Water Inlet Water Outlet
37 5/8"
28 7/8"
19 1/8"
17"
Air In
DQU411-I2 Water Cooled DQU411-I2 Air Cooled
Dimensions Machine with crate Machine with crate
width 19-1/8’’ (48,6 cm) 34’’ (86,4 cm) 19-1/8’’ (48,6 cm) 34’’ (86,4 cm)
height 66-7/8’’ (169,9 cm) 78’’ (198,1 cm) 66-7/8’’ (169,9 cm) 78’’ (198,1 cm)
depth 37-5/8’’ (95,6 cm) 48’’ (121,9 cm) 37-5/8’’ (95,6 cm) 48’’ (121,9 cm)
Weight 450 lbs (204,1 kg) 650 lbs (294,8 kg) 450 lbs (204,1 kg) 650 lbs (294,8 kg)
Electrical 1 PH 3 PH 1 PH 3 PH
running amps 17A 15A 18A 16A
connection type NEMA L6-30P NEMA L15-30P NEMA L6-30P NEMA L15-30P
Compressor 15,000 Btu/hr Scroll™ Compressor
Cabinet - 1,300 Btu/hr Compressor
Drive Motor 2 hp
Cooling
Water cooled units require 1/2” N.P.T. water and drain
fittings. Maximum water pressure of 130 psi. Minimum
water flow rate of 3 GPM. Ideal EWT of 50°-70°F.
Air cooled units require 3” (7.6 cm) air space at the back
and sides.
Hopper Volume Two - 8 gallon (30,28 liters)
Freezing Cylinder
Volume 1.33 gallon (5,4 liters)

6 DQU411-I2 OPERATOR’S MANUAL 513687 REV.2
Section 2: Operation
MAINTENANCEPARTS TROUBLESHOOTING OPERATION INTRODUCTION
A. Empty the Freezing Cylinders
Turn o freezing cylinder.
A.1
Press the Clean button.
A.3
Optional: Fill the bucket with Stera Sheen
solution to make cleaning parts easier
after disassembly.
NOTE
Refill the bucket in the cab with cool tap water (or Stera
Sheen). Allow the freezing cylinder to fill then drain the
water into a container. Repeat until the water draining
from the freezing cylinder is clear.
A.5
Remove any remaining
water from the bucket in the
cabinet.
Drain the water and press
the Clean button to stop
the auger.
A.6
If the “Clean Time Exceeded” warning
is displayed on the IntelliTec2™, turn
the freezing cylinder on and o again
and press the Clean button to clear the
warning.
NOTE
Open the spigot to drain the
product into a container until
the container is full. Empty
the container and repeat until
product has been drained
from the freezing cylinder.
A.4
In the cab, disconnect the bag adapter and place it in
a bucket filled with cool tap water.
Remove the mix bag and store it in the cooler.
A.2

513687 REV.2 DQU411-I2 OPERATOR’S MANUAL 7
Section 2: Operation
MAINTENANCE PARTSTROUBLESHOOTING
OPERATIONINTRODUCTION
Before using the machine for the first time, complete
machine disassembly, cleaning and sanitizing
procedures need to be followed. Routine cleaning
intervals and procedures must comply with the local
and state health regulations. Inspection for worn or
broken parts should be made at every disassembly
of the machine. All worn or broken parts should be
replaced to ensure safety to both the operator and the
customer and to maintain good machine performance
and a quality product. Check the wear line on the auger
flights on a regular basis and replace as needed.
B. Disassemble Parts
Auger Flight Wear
Press and hold the Main
Freezer Power button for
three seconds to turn o
the power.
A.8
1. Front Door Disassembly
Remove the spigot extension
or rosette cap if installed.
Unscrew the knobs on the
front door and remove the
door.
B.1
Remove the front door o-ring
and remove the spigot from
the front door.
B.2
Remove the bucket in the
cab and turn on the pump to
clear any remaining liquid in
the hoses.
Open the spigot to drain the
freezing cylinder.
A.7

8 DQU411-I2 OPERATOR’S MANUAL 513687 REV.2
Section 2: Operation
MAINTENANCEPARTS TROUBLESHOOTING OPERATION INTRODUCTION
Remove all o-rings from
parts by first wiping o the
lubrication using a clean towel.
Then squeeze the o-ring
upward to form a loop. Roll
the o-ring out of the groove.
B.4
Unscrew springs from the
auger flights.
B.7
Remove front auger support
and bushing and remove
the auger from the freezing
cylinder. As the auger is being
pulled out, remove the plastic
flights with springs.
B.5
Wipe any remaining lubricant o the hex end of the
auger and remove the rear seal assembly and o-ring.
Wipe any remaining lubricant o of the parts.
B.6
If the pump hoses require cleaning and inspection,
follow the steps in Section 3.
B.9
Remove the air bleed valve
from the front door.
B.3
Unscrew the hose clamp on
the bag adapter and remove
the bag adapter.
B.8

513687 REV.2 DQU411-I2 OPERATOR’S MANUAL 9
Section 2: Operation
MAINTENANCE PARTSTROUBLESHOOTING
OPERATIONINTRODUCTION
C. Cleaning Disassembled Parts
Disassembled parts require complete cleaning,
sanitizing and air drying before assembling. Local and
state health codes will dictate the procedure required.
Some state health codes require a four sink process
(pre-wash, wash, rinse, sanitize, air dry), while others
require a three sink process (without the pre-wash
step). The following procedures are a general guideline
only. Consult your local and state health codes for the
procedures required in your location.
Rinse all parts with clean 90° to 110°F (32°C to 43°C)
water. Then place all parts in a sanitizing solution for at
least 1 minute, then remove and let air dry completely
before assembling in machine.
C.2
Be sure to use the brushes that shipped
with the machine to properly clean the
parts.
NOTE
Place all parts in 90° to 110°F
(32°C to 43°C) mild detergent
water and wash thoroughly.
Use the brushes that shipped
with the machine to clean all
holes in the front door, flights,
mix pickup assembly, etc.
C.1
D. Cleaning the Machine
Using a detergent solution
and the large barrel brush
provided, clean the freezing
cylinder by dipping the brush
in the solution and brushing
the inside of the freezing
cylinder.
Make sure to thoroughly clean the rear seal surface
on the inside of the freezing cylinder.
D.1

10 DQU411-I2 OPERATOR’S MANUAL 513687 REV.2
Section 2: Operation
MAINTENANCEPARTS TROUBLESHOOTING OPERATION INTRODUCTION
E. Assembling Machine
Total Blend or equivalent must be used
when lubrication of machine parts is
specified.
The USDA and FDA require that lubricants
used on food processing equipment must
be certified for this use. Use lubricants
only in accordance with the manufacturer’s
instructions.
NOTE
Stoelting recommends allowing the parts
to air dry before assembling.
NOTE
Install the rear seal o-ring onto the auger. Lubricate
the outside of the o-ring with a generous amount of
sanitary lubricant.
E.1
The exterior of the machine should be kept clean at
all times to preserve the luster of the stainless steel.
A high grade of stainless steel has been used on the
machine to ease cleanup. To remove spilled or dried
mix, wash the exterior with 90° to 110°F (32°C to 43°C)
mild detergent water and wipe dry.
Do not use highly abrasive materials, as they will mar
the finish. A mild alkaline cleaner is recommended.
Use a soft cloth or sponge to apply the cleaner. For
best results, wipe with the grain of the steel.
D.4
Wrap the brush in a clean cloth and thoroughly dry
the freezing cylinder.
D.2
Remove the drain tray from the
front of the machine. Remove
the drip tray from the front
panel. Clean and replace the
trays.
D.3

513687 REV.2 DQU411-I2 OPERATOR’S MANUAL 11
Section 2: Operation
MAINTENANCE PARTSTROUBLESHOOTING
OPERATIONINTRODUCTION
Lubricate the hex end of the auger with Total Blend.
E.3
Install the adapter into the rear seal WITHOUT
LUBRICANT. Then lubricate the inside of the adapter
and install it onto the auger.
DO NOT lubricate the outside of the rear seal.
E.2
Screw the springs onto the
studs in the plastic flights.
The springs must be screwed
into the flights completely to
provide proper compression.
E.4
Install the two plastic flights
onto the rear of the auger
and insert it part way into the
freezing cylinder.
E.5
Install the remaining plastic
flights, push the auger into the
freezing cylinder and rotate it
slowly until the auger engages
the drive shaft.
E.6

12 DQU411-I2 OPERATOR’S MANUAL 513687 REV.2
Section 2: Operation
MAINTENANCEPARTS TROUBLESHOOTING OPERATION INTRODUCTION
Apply a thin layer of sanitary lubricant to the inside
and outside of the auger support bushing.
E.7
Install the bushing onto the
auger support and install the
auger support into the front
of the auger. Rotate the auger
support so that one leg of the
support points straight up.
E.8
Assemble the air bleed valve o-ring onto the air bleed
valve. Position the o-ring into the groove. Apply a thin
film of sanitary lubricant to the o-ring.
E.9
Insert the air bleed valve into
the back of the front door.
Install the compression spring
onto the air bleed valve then
screw the knob on finger tight.
E.10

513687 REV.2 DQU411-I2 OPERATOR’S MANUAL 13
Section 2: Operation
MAINTENANCE PARTSTROUBLESHOOTING
OPERATIONINTRODUCTION
Make sure the pins on the front door do
not touch the legs of the auger supports.
NOTE
Install the o-rings onto the spigot. Apply a thin layer
of sanitary lubricant to the o-rings on the spigot body.
E.11
Fit the front door o-ring into
the groove on the rear of the
front door.
E.14
Place the front door assembly
on the mounting studs and the
push front door against the
machine carefully.
E.15
Secure the front door to the
machine by placing the knobs
on the studs and tightening
until finger tight. Do not
overtighten. Proper o-ring seal
can be observed through the
transparent front door.
E.16
Press the ball on the adapter
into the spigot socket.
E.17
Insert the spigot bodies into the door from the bottom
and push them upwards. Keep the spigot top adapters
facing towards the front.
E.13
Insert the spigot top adapter
into the spigot body. Make sure
the “FRONT” raised lettering
faces towards the front.
E.12

14 DQU411-I2 OPERATOR’S MANUAL 513687 REV.2
Section 2: Operation
MAINTENANCEPARTS TROUBLESHOOTING OPERATION INTRODUCTION
Install the bag adapter in the
cab using a hose clamp.
E.19
Place the mix container on the
shelf in the cabinet.
E.18
3. Pump Hose Assembly
When sanitizing the machine, refer to local sanitary
regulations for applicable codes and recommended
sanitizing products and procedures. The frequency of
sanitizing must comply with local health regulations.
Mix sanitizer in quantities of no less than 2 gallons
of 90°F to 110°F (32°C to 43°C) water. Allow sanitizer
to contact the surfaces to be sanitized for 5 minutes.
Any sanitizer must be used only in accordance with
the manufacturer’s instructions and to provide a 100
parts per million strength solution.
F. Sanitizing
Sanitizing must be done after the machine is clean and
just before the machine is filled with mix. Sanitizing
the night before does not ensure sanitization the next
day. However, you should always clean the machine
and parts after using it.
The United States Department of
Agriculture and the Food and Drug
Administration require that all cleaning
and sanitizing solutions used with food
processing equipment be certified for this
use
NOTE
Prepare 2 gallons of sanitizing
solution.Followingthesanitizer
manufacturer’s instructions
for preparing the sanitizing
solution.
Pour thesanitizing solution into
the mix container.
F.1

513687 REV.2 DQU411-I2 OPERATOR’S MANUAL 15
Section 2: Operation
MAINTENANCE PARTSTROUBLESHOOTING
OPERATIONINTRODUCTION
PresstheMainPowerbutton.
Then press the Pump button
to turn the pump ON.
F.2
Press the CLEAN button to
start the auger rotating. The
IntelliTec2™ display shows a
5-minute timer.
F.5
Check for leaks when the freezing cylinder is first
pressurized with sanitizing solution.
1. Check for leaks at the front door seal.
2. Check the drain tray located in the front panel for
leaks coming from the rear seal of the auger.
3. Check the inside of the cab unit for leaks at the
hose connections.
F.3
After the pump shuts o, press
the air bleed valve to release
the air pressure. Allow water to
fill the freezing cylinder.
F.4
Sanitize immediately before use.
Make sure the display shows the freezing cylinder is
o. If it is not, press the On/O button to turn it o.
G. Freeze Down
While the cylinder is being sanitized complete the
following:
1. Use a sanitized soft bristle brush dipped in sanitizing
solution to clean the mix container.
2. Empty the sanitizer from the container.
3. Install spigot extension and rosette cap (if applicable).
F.6
After the five minute timer
expires, open the spigot to
drain the sanitizing solution
into a container.
When the solution has drained,
press the Pump and Clean
buttons to stop the pump and auger. Allow the freezing
cylinder to drain completely. The machine is now
sanitized and ready for adding mix.
F.7

16 DQU411-I2 OPERATOR’S MANUAL 513687 REV.2
Section 2: Operation
MAINTENANCEPARTS TROUBLESHOOTING OPERATION INTRODUCTION
Place a container under the spigot and open the spigot
to allow the mix to flush out about 8 ounces (0.23 liters)
of sanitizing solution and liquid mix.
G.2
Install the bag adapter into a bag of mix.
Close the cab door.
Press the Pump button to turn the pump on.
G.1
Allow the cylinder to fill until
the pump shuts o. Press the
valve to release pressure in
the cylinder.
The cylinder will be filled to the
proper level after the pump
shuts o the second time.
G.3
Press the On/O button to
turn on the freezing cylinder
then press the Push to
Freeze button.
When the product is ready,
the display will read “SERVE” or “SERVE 2”. Open the
spigot to dispense product.
G.4

513687 REV.2 DQU411-I2 OPERATOR’S MANUAL 17
Section 2: Operation
MAINTENANCE PARTSTROUBLESHOOTING
OPERATIONINTRODUCTION
208135
208465
208380
208485
208467
208387
Part Number Where Used
208135 Freezing cylinder
208465 Front door, check valve block, pump hose
208380 Front door, pump hose, mix sensor
208467 Front door, manifold, check valve block
208485 Coiled hose
208387 Front door, pump hose, manifold, mix sensor, mix tube
H. Brushes for Cleaning

18 DQU411-I2 OPERATOR’S MANUAL 513687 REV.2
Section 2: Operation
MAINTENANCEPARTS TROUBLESHOOTING OPERATION INTRODUCTION
I. Lubrication Points
O-Ring & Hex
End of Auger
O-Ring ONLY Inside
Metal Adapter
Inside & Outside
of Bushing
All O-Rings

513687 REV.2 DQU411-I2 OPERATOR’S MANUAL 19
Section 2: Operation
MAINTENANCE PARTSTROUBLESHOOTING
OPERATIONINTRODUCTION
J. Pump Hose Routing
Mix Bag Adapter
3/8" Clear Hose (24")
Mix Sensor
Tan Pump Hose
Tee
1/2" Clear Hose (6")
1/4" Clear Hose (13")
Mix Bag Adapter
3/8" Clear Hose (24")
Mix Sensor
Tan Pump Hose
Tee
1/2" Clear Hose (6")
1/4" Clear Hose (13")

20 DQU411-I2 OPERATOR’S MANUAL 513687 REV.2
Section 3: Maintenance
MAINTENANCEPARTS TROUBLESHOOTING OPERATION INTRODUCTION
A. Mix Pump Hose Replacement
Replace pump hose every 800 gallons or
every 2 weeks, whichever occurs first.
Replace the hose during the cleaning
process.
Use only genuine Stoelting parts to prevent
risk of failure.
NOTE
Turn the pump on and pull
down on the pickup end of the
tan hose until a few inches of
tubing is visible. The pickup
end is on the left side.
Then turn the pump o.
A.1
Loosen the clamps on the tan
hose at the mix sensor and
the tee.
Disconnect the hose at both
ends.
A.2
Rotate the pump rollers so
one of the rollers is at the 6:00
position.
With a brush, clean the roller
assembly with detergent
water, then with clear water.
A.4
Turn the pump on and pull the
hose out of the black cover.
Then turn the pump o.
A.3