Stoelting E131-OT2 Operators Manual
Model E131-OT2 / F131-OT2
SERVICE MANUAL
Manual No. 513648 Rev.0
This manual provides basic information about the machine. Instructions and suggestions are
given covering its operation and care.
The illustrations and specifi cations 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 servicing of the machine, contact Stoelting.
stoeltingfoodservice.com
Stoelting Foodservice Equipment
502 Highway 67
Kiel, WI 53042-1600
U.S.A.
Main Tel: 800.558.5807
Fax: 920.894.7029
Customer Service: 888.429.5920
Fax: 800.545.0662
Email: foodservice@stoelting.com
© 2014 PW Stoelting, LLC
A Few Words About Safety
Safety Information
Read and understand the entire manual before
operating or maintaining Stoelting equipment.
This manual provides the operator with information
for the safe operation and maintenance of Stoelting
equipment. As with any machine, there are hazards
associated with their operation. For this reason safety
is emphasized throughout the manual. To highlight
specifi c safety information, the following safety defi ni-
tions are provided to assist the reader.
The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and
their explanations, deserve your careful attention
and understanding. The safety warnings do not by
themselves eliminate any danger. The instructions
or warnings they give are not substitutes for proper
accident prevention measures.
If you need to replace a part, use genuine Stoelting
parts with the correct part number or an equivalent
part. We strongly recommend that you do not use
replacement parts of inferior quality.
Safety Alert Symbol:
This symbol Indicates danger, warning or caution.
Attention is required in order to avoid serious personal injury. The message that follows the symbol
contains important information about safety.
Signal Word:
Signal words are distinctive words used throughout
this manual that alert the reader to the existence and
relative degree of a hazard.
WARNING
The signal word “WARNING” indicates a potentially
hazardous situation, which, if not avoided, may result
in death or serious injury and equipment/property
damage.
CAUTION
The signal word “CAUTION” indicates a potentially
hazardous situation, which, if not avoided, may result
in minor or moderate injury and equipment/property
damage.
CAUTION
The signal word “CAUTION” not preceded by the
safety alert symbol indicates a potentially hazardous
situation, which, if not avoided, may result in equipment/property damage.
NOTE (or NOTICE)
The signal word “NOTICE” indicates information or
procedures that relate directly or indirectly to the
safety of personnel or equipment/property.
TABLE OF
CONTENTS
Section Description Page
1 Description and Specifications
1.1 Description .................................................................................................1
1.2 Specifications.............................................................................................1
1.3 Modes of Normal Operation ........................................................................4
1.4 Mix Level Indicators....................................................................................6
1.5 Hopper Refrigeration ...................................................................................6
1.7 Motor Profile Cutout Compensation ............................................................6
2 Installation Instructions
2.1 Safety Precautions.....................................................................................9
2.2 Shipment and Transit .................................................................................9
2.3 Machine Installation....................................................................................9
3 Initial Set-Up and Operation
3.1 Operator’s Safety Precautions....................................................................11
3.2 Operating Controls and Indicators...............................................................11
3.3 Important Information Regarding Cleaning and Sanitizing............................13
3.4 Disassembly of Machine Parts ...................................................................14
3.5 Cleaning Disassembled Parts.....................................................................15
3.6 Sanitizing Machine Parts............................................................................15
3.7 Cleaning the Machine.................................................................................15
3.8 Assembling the Machine ............................................................................16
3.9 Sanitizing ...................................................................................................16
3.10 Initial Freeze Down and Operation ..............................................................17
3.11 Normal Freeze Down and Operation ...........................................................18
3.12 Mix Information...........................................................................................18
4 Maintenance and Adjustments
4.1 Machine Adjustment...................................................................................19
4.2 Product Consistency Adjustment ...............................................................19
4.3 Locking the Control Panel...........................................................................19
4.4 Obtaining Readings and Modifying Settings................................................19
4.5 Readings ....................................................................................................21
4.6 Adjustments...............................................................................................22
4.7 Other Settings............................................................................................22
4.8 Drive Belt Tension Adjustment....................................................................23
4.9 Condenser Cleaning ...................................................................................23
4.10 Preventative Maintenance ...........................................................................24
4.11 Extended Storage.......................................................................................24
Section Description Page
5 Refrigeration System
5.1 Refrigeration System ..................................................................................25
5.2 Refrigerant Recovery and Evacuation ..........................................................25
5.3 Refrigerant Charging ...................................................................................26
5.4 Compressor................................................................................................27
5.5 Condenser ..................................................................................................28
5.6 Valves ........................................................................................................28
A. Thermostatic Expansion Valve (TXV)..................................................................28
B. Check Valve.........................................................................................................29
C. High Pressure Cutout ......................................................................................... 29
D. Hot Gas Bypass..................................................................................................3 0
E. Evaporator Pressure Regulator (EPR) ............................................................... 31
F. Water Valve (Water Cooled Models Only) ...........................................................31
5.7 Solenoid .....................................................................................................32
5.8 Filter Drier ..................................................................................................34
5.9 Capillary Tube ............................................................................................34
6 Electrical and Mechanical Control Systems
6.1 IntelliTec Controller .....................................................................................35
6.2 Contactors..................................................................................................35
6.3 Drive Motor .................................................................................................36
6.4 Capacitors ..................................................................................................37
6.5 Gearbox .....................................................................................................38
6.6 Condenser Fan Motor (Air Cooled Models Only) .........................................38
6.7 Spigot Switch.............................................................................................39
6.8 Temperature Control Sensor .......................................................................40
7 Troubleshooting
7.1 Error Codes ................................................................................................41
7.2 Troubleshooting ..........................................................................................41
7.3 Servicing Tip ...............................................................................................43
7.4 Troubleshooting - Machine..........................................................................44
8 Replacement Parts
8.1 Decals & Lubrication ..................................................................................45
8.2 Auger Shaft and Faceplate Parts................................................................46
8.3 Machine Front ............................................................................................48
8.4 Panels........................................................................................................48
8.5 Left Side.....................................................................................................49
8.6 Right Side ..................................................................................................50
8.7 Front ..........................................................................................................50
8.8 Rear ...........................................................................................................52
8.9 Refrigeration Diagram & Wiring Diagram.....................................................54
SECTION 1
INTRODUCTION
1.1 DESCRIPTION
The Stoelting E131OT2 and F131OT2 counter machines
are gravity fed. The machines are equipped with fully
automatic controls to provide a uniform product. They are
designed to operate with almost any type of commercial
soft serve or non-dairy mixes available, including: ice milk,
ice cream, yogurt, and frozen dietary desserts.
This manual is designed to assist qualified service personnel and operators in the installation, operation and maintenance of the Stoelting E131OT2 and F131OT2 gravity
machine.
Figure 1-1 E131OT2 / F131OT2 Machine
1.2 SPECIFICATIONS
Figure 1-2 Specification
1
1.2 E131I SPECIFICATIONS
Dimensions
width
height
depth
Weight
Electrical
ru nnin g am ps
con n ection type
In t e r nat ional Option
Compressor
Drive M ot or
Air Flow
Plumbing Fit t i ngs
Hopper Volum e
Freezing Cylinder
Volume
Production
Capacity
Model E 131 OT2
Machine
22'' (55,9 cm)
34-3/ 4' ' (88,3 cm)
28-1/ 2' ' (72,4 cm)
1 Phase, 208-230 VA C, 60Hz
approximately 12A
NEM A6-20P power cor d pr ovided
1 Phas e, 220- 240 VAC, 50H z
8,600 Btu/ h r ( R -404A)
Two - 3/ 4 hp
Air cooled un it s r equire 3" (7, 6 cm ) air sp ace on both sides
Water co ol ed un it s r equire 3/8" N.P.T. water and drain fitt ings.
Tw o - 3 gal l o n (11, 35 l it er s )
Two - 0. 5 gal lon (2 qua rt), 1,89 lit er s
5 GPH ( 18, 93 liters) each Fr eezin g Cy linder
8.5 G PH ( 32, 18 liter s) bot h Freezin g Cy linders
with crat e
28'' (71,1 cm)
40-1/ 4' ' (102,2 cm)
35-1/ 4'' (8 9, 5 cm )
450 lbs ( 204,1 kg)370 l bs (167,8 kg)
Refrigerant
Charge
Suction Pr essur e
(at 72° F)
Discharge Pr essur e
Hot Gas Bypass
Pressure
EPR Valve
E131OT2
R-404A
(W/C) 26 oz
(A/C) 32 oz
One Cylinder 22- 24 ps ig
Hopper O nl y 14 psig
225-235 p sig
14 psig (on ly hopper r un nin g)
59-61 psig
Menu Display Value
Basic
Advanced
Storage
(Left
control
only)
Cu tOut * amps
Cut In T 22 °F
Cyc l es 20 cou nt
Stir O n 15 secon d s
Stir Off 300 seconds
On Time 25 secon d s
Off T ime 450 seconds
Stb Time 120 minut es
Sl1DrvO n 120 seconds
Sl1DrO ff 180 seconds
Sl2Cu t In 35 °F
Sl2CtOut 30 °F
DftOffTm 600 seconds
Refriger ** 2 Hopper
Hpr CutIn 37.5 ° F
Hpr Ct O ut 32 °F
HprOffst 8 °F
Hpr Off 13 minutes
Hpr On 130 secon ds
* CutOut amps must be set on site.
** The Refriger setting on the right control board
must be set to None.
2
1.2 F131I SPECIFICATIONS
Dimensions
width
height
depth
Weight
Electrical
ru nnin g am ps
con n ection type
In t e r nat ional Option
Compressor
Drive M ot or
Air Flow
Plumbing Fit t i ngs
Hopper Volum e
Freezing Cylinder
Volume
Production
Capacity
Model F131OT2
Machine
22'' (55,9 cm)
34-3/ 4' ' (88,3 cm)
28-1/ 2' ' (72,4 cm)
1 Phase, 208-230 VA C, 60Hz
approximately 12A
NEM A6-20P power cor d pr ovided
1 Phas e, 220- 240 VAC, 50H z
12,000 Btu/ hr ( R-404A)
Two - 3/ 4 hp
Air cooled un it s r equire 3" (7, 6 cm ) air sp ace on both sides
Water co ol ed un it s r equire 3/8" N.P.T. water and drain fitt ings.
Tw o - 3 gal l o n (11, 35 l it er s )
Two - 0. 85 gal lon ( 3. 4 quart ) , 3,22 l it er s
8 GPH (30,29 liter s) each Freez in g Cy l in der
11.5 G PH ( 43,53 lit er s) bot h Free zing Cylin d er s
with crat e
28'' (71,1 cm)
40-1/ 4' ' (102,2 cm)
35-1/ 4'' (8 9, 5 cm )
470 lbs ( 213,1 kg)385 l bs (174,6 kg)
Refrigerant
Charge
Suction Pr essur e
(at 72° F)
Discharge Pr essur e
Hot Gas Bypass
Pressure
EPR Valve
F131OT2
R-404A
(W/C) 32 oz
(A/C) 42 oz
One Cylinder 22- 24 ps ig
Hopper O nl y 14 psig
225-235 p sig
14 psig (on ly hopper r un nin g)
59-61 psig
Menu Display Value
Basic
Advanced
Storage
(Left
control
only)
Cu tOut * amps
Cut In T 22 °F
Cyc l es 20 cou nt
Stir O n 15 secon d s
Stir Off 300 seconds
On Time 15 secon d s
Off T ime 450 seconds
Stb Time 120 minut es
Sl1DrvO n 120 seconds
Sl1DrO ff 180 seconds
Sl2Cu t In 33 °F
Sl2CtOut 30.5 °F
DftOffTm 600 seconds
Refriger ** 2 Hopper
Hpr CutIn 37.5 ° F
Hpr Ct O ut 32 °F
HprOffst 8 °F
Hpr Off 13 minutes
Hpr On 130 secon ds
* CutOut amps must be set on site.
** The Refriger setting on the right control board
must be set to None.
3
1.3 MODES OF NORMAL OPERATION
Following are details of the operational modes of the
IntelliTec control.
NOTE:
The preset amounts, times, and temperatures listed
below are references to actual settings on the
IntelliTec control. Refer to Table 1-1 on page 7 for
details on each setting.
A. INITIAL STATUS
When the Main Freezer Power and Freezing Cylinder
switches are placed in the ON position, the machine will
start in the “Sleep 1 Mode". The display will read "Sleep 1
Mode". The control will eventually move into the “Sleep 2”
mode if the PUSH TO FREEZE button is not pressed.
When the PUSH TO FREEZE button is pressed the control
will move to the “Serve Mode”.
B. SERVE MODE
When the PUSH TO FREEZE button is pressed or a spigot
handle is pulled, the “Serve Mode” begins. The drive motor
starts, and after a 3 second delay, the compressor starts.
The display reads “FREEZING” on the top line and a bar on
the bottom line increases with product consistency. A
toroid on the IntelliTec control senses increasing drive
motor amperage as the product comes to consistency in
the freezing cylinder. When the control senses the product
is at 75% of consistency, the display will read "SERVE",
the amber LED will go out, and the green LED will flash. At
this time, product can be served from the machine. The
drive motor and compressor will continue to run until the
toroid reads a preset value (CutOut amps). When the toroid
reads the CutOut amps on the drive motor, the compressor
turns off and the green LED will remain lit. After a 3 second
delay, the drive motor turns off. The product in the freezing
cylinder is now at serving temperature and consistency.
After product is at consistency, the IntelliTec control
continuously monitors refrigerant temperature through a
thermistor mounted on the side of the freezing cylinder.
When the temperature increases to a preset amount (Cut
In T), a 3-second drive motor pre-stir analyzes product
consistency. The pre-stir check is also performed each
time the spigot handle is opened. This check prevents overfreezing of product, especially during frequent, small volume draws. If the product requires a freezing cycle, the
control will start the cycle.
During the “Serve Mode”, a stir cycle starts. This cycle is
independent of the freezing cycle and is based on preset
times (Stir On and Stir Off). The stir cycle prevents product
separation. If a freezing cycle is initiated, the timer is reset.
In addition to the "Serve Mode" freezing cycle, there is a
freezing cycle based on a preset time (DftOffTime). If this
time is attained without a freezing cycle, the control will
automatically start a freezing cycle.
The machine will remain in “Serve Mode” until the cycle
count setting is attained. The cycle count is the number of
active freezing cycles and is based on a preset value
Figure 1-3 Serve Mode
(Cycles). Once the cycle count has been reached without
user interruption, the control will move into the "Standby
Mode".
If the PUSH TO FREEZE button is pressed or a spigot
handle is pulled, the cycle count is reset and the control will
move to the beginning of the "Serve Mode". Refer to Figure
1-3 for a graphical representation of the "Serve Mode".
C. STANDBY MODE
If no product has been drawn from the spigot and the preset
number of active freezing cycles is met, the control moves
into the “Standby Mode”. In "Standby Mode", the freezing
cycle is based on preset timers (On Time and Off Time), and
prevents ice crystals from building up in the product.
Because the product remains partially frozen, it can quickly
return to servable consistency when the PUSH TO FREEZE
button is pressed.
During “Standby Mode”, the stir cycle runs. This cycle is
based on preset, timed intervals (Stir On and Stir Off) and
prevents product separation.
The "Standby Mode" maintains product quality during slow
times, while minimizing reactivation time. This mode lasts
for a preset time (Stb Time). Once this time has been
reached without user interruption, the control moves into
Figure 1-4 Standby Mode
4
the "Sleep 1 Mode". Refer to Figure 1-4 for a graphical
representation of the "Standby Mode".
If a spigot is opened or the PUSH TO FREEZE button is
pressed, the control will move to “Serve Mode”. Product in
the front of the freezing cylinders may or may not be at
consistency. The state of the product is dependant on a
number of variables but will come to consistency quickly.
D. SLEEP 1 MODE
After the “Standby Mode” time has expired without user
interruption, the control will move into the “Sleep 1 Mode”.
During the "Sleep 1 Mode", the stir cycle is handled by
preset timers (Sl1DrvOn and Sl1DrOff), and allows product
to melt to a liquid state by using agitation cycles without
any flow of refrigerant. Although the product temperature
never increases above 40°F, the product thaws rapidly
which minimizes product breakdown. The control will stay
in the “Sleep 1 Mode” until sensing a preset temperature
(Sl2CutIn). When this temperature has been reached
without user interruption, the control will move to the "Sleep
2 Mode". Refer to Figure 1-5 for a graphical representation
of the "Sleep 1 Mode".
Figure 1-5 Sleep 1 Mode
If a spigot is opened or the PUSH TO FREEZE button is
pressed, the control will move to “Serve Mode”. If the spigot
is opened in "Sleep 1 Mode", the product will not be at
consistency. The operator must wait until the first "Serve
Mode" freezing cycle has completed to serve product.
E. SLEEP 2 MODE
The “Sleep 2 Mode” maintains the freezing cylinder temperature between two preset values (Sl2CutIn and Sl2CtOut).
During the “Sleep 2 Mode”, the stir cycle runs. This cycle
is based on preset, timed intervals (Stir On and Stir Off) and
prevents product separation. The "Sleep 2 Mode" is often
referred to by customers as the “night mode” and the
machine will stay in this mode until a spigot is opened or
the PUSH TO FREEZE button is pressed. When this
occurs, the control will move to “Serve Mode”. If the spigot
is opened at this time, the product will be liquid. The
operator must wait until the first "Serve Mode" freezing
cycle has completed to serve product. Refer to Figure 1-6
for a graphical representation of the "Sleep 2 Mode".
Figure 1-6 Sleep 2 Mode
F. INTELLITEC RESTART (VERSION 3.5 OR HIGHER)
If a hard error occurs (refer the hard error list below), the
IntelliTec control will wait 5 minutes then attempt to clear
the error by restarting itself. The control will count each
restart attempt. The restart count will reset if the PUSH TO
FREEZE button is pressed, the spigot is pulled, or the
Freezing Cylinder OFF/ON switch is placed in the OFF
position.
The following are considered hard errors:
ERROR CODE MALFUNCTION
2 High Torque
3 Run Time
4 Clean
7 Drive Motor
9 High Pressure Cutout
When a restart occurs, the second line of the display will
read "Restart" and the backlight will blink. This will occur
regardless of the system mode.
G. SLEEP 3 MODE (VERSION 3.5 OR HIGHER)
If a high torque, run time, or drive motor error condition
occurs on the third restart attempt, the control will move to
the "Sleep 3 Mode".
In "Sleep 3 Mode" freezing cylinder refrigeration will run for
4 seconds every 10 minutes. This ensures the product
temperature never increases above 40°F. The stir cycle
and the auger do not run during "Sleep 3 Mode".
The control will exit "Sleep 3 Mode" if the PUSH TO
FREEZE button is pressed, the spigot is pulled, or the
Freezing Cylinder OFF/ON switch is placed in the OFF
position.
H. CLEAN MODE
When the CLEAN button is pressed on the left side, all
hopper refrigeration stops. When the CLEAN button is
pressed on the right side, only the right barrel freezing cycle
stops. In either case, the drive motor of that barrel starts and
will run for 20 minutes and a 5 minute countdown timer is
displayed. After the time has elapsed, an optional audible
alarm will sound if this accessory has been installed. The
5
audible alarm is a reminder for the operator to end the
"Clean Mode" when cleaning is completed.
If the machine is kept in "Clean Mode" for more than 20
minutes, the auger drive motor stops, the hopper refrigeration starts, and an error code (E4) is displayed on the
display panel. The error code prevents damage to the
machine that could occur during an extended clean mode
(Refer to Section 8 - Troubleshooting for details). To clear
this error, place the Freezing Cylinder Off-On switch in the
Off position and back in the On position. If the machine is
still being cleaned, pushing the CLEAN button will reset the
timer and restart the "Clean Mode".
1.4 MIX LEVEL INDICATORS
The hoppers are equipped with a sensor that monitors mix
level. When the mix level drops below the sensor probe, the
lower line of the display will read "Low Mix" and the display
will flash. To clear the "Low Mix" error, add mix to the
hopper.
1.5 HOPPER REFRIGERATION
The IntelliTec control is programmed to handle refrigeration
of the hopper independently from the freezing cylinder. The
left control maintains hopper temperature between two
preset values (HprCutIn and HprCtOut).
NOTE
The Refriger setting should be 2 Hopper for the Left
control and None for the right control.
The hopper refrigeration cycle starts when the temperature
of either hopper reaches the HprCutIn value and stops when
both hoppers reach the HprCutOut value.
In addition to this refrigeration cycle, hopper refrigeration
may start when the freezing cycle starts. This reduces
compressor cycles which preserves compressor life. Hopper refrigeration will start if the hopper temperature is above
a preset value (HprOffst + HprCtOut). This value is always
between HprCutIn and HprCtOut. Refrigeration of the hopper will continue until the HprCtOut is reached or until the
freezing cycle is completed in the freezing cylinder.
The refrigeration cycle will run for a maximum of 4 minutes.
After 4 minutes, the refrigeration cycle will stop for a
minimum of 3 minutes. At the expiration of 3 minutes, the
control will check product temperature. If product temperature is at or above HprCutIn, another refrigeration cycle will
start.
NOTE
If the temperature in the cabinet stays above 50°F
for more than two hours, the machine will go into
Sleep Mode and a clean message will be shown on
the display .
1.6 OPERATION DURING SENSOR FAILURE
The IntelliTec control is designed to allow the machine to
continue to function if a temperature sensor failure occurs.
If a sensor fails, the display will show the error and the
control will run the machine on timers for the freezing cycle
or hopper refrigeration. This allows the operator to continue
to serve product from the machine until proper servicing can
be completed.
A. SERVE AND STANDBY MODE
In the event of a temperature sensor failure on a freezing
cylinder, the IntelliTec control will function in two modes,
"Serve Mode" and "Standby Mode". When the product is at
consistency in "Serve Mode", the IntelliTec control uses a
timer instead of the sensor and will not start another
freezing cycle until a preset value (DftOffTme) is met.
The control will monitor product after it is at consistency,
activating the stir cycle and counting the number of cycles.
When the cycle count is reached, the control will move to
"Standby Mode".
Figure 1-7 Serve Mode (Sensor Failure)
The "Standby Mode" is the same as in normal operation
with the exception of when the preset time (Stb Time) is
met, the control moves back into the "Serve Mode". Refer
to Figure 1-7 for details.
In the event a hopper temperature sensor fails, the control
will use the temperature of the other hopper to control the
refrigeration cycle.
If both temperature sensors fail, the refrigeration cycle is
managed by preset times (Hpr On and Hpr Off). This
refrigeration cycle is independent of the freezing cycle.
1.7 MOTOR PROFILE CUTOUT
COMPENSATION
The IntelliTec control is programmed to automatically
function at a range of supply voltages. This feature provides
the advantage of having product maintained at a specific
temperature and consistency irrespective of the supply
voltage. A motor profile curve is programmed on the
IntelliTec control and provides a relationship between the
supply voltage and drive motor cutout amperage. Depending on the supply voltage, the control varies cutout amperage according to the motor profile. This feature is automatic
and does not need any configuring.
6
In tellIT ec Control Se tting Specification s
Basic Menu
Advanced Menu
DISPLAY MODE DEFINITION
CutOut Serve Am p draw setting for cut out
Cut In T Serve Temperature setting for cut i n
Cyc l es S erve Freez i ng c ycl es before going int o Standby M ode
St i r On Serve Stir-only on tim e
St i r Off Serve St i r-onl y off tim e
DISPLAY E131 F131 MODE DEFINITION
On Time 25 sec 15 sec Standby Freezi ng c ycle "on” time (runs on t i m ers onl y)
Off Time 450 s ec 450 sec Standby Freezi ng c ycle “off” tim e
St b Time 120 min 120 min St andby Total t im e i n m ode
Sl1DrvOn 120 sec 120 s ec Sl eep 1 Drive mot or “on” ti m er
Sl1DrOff 180 sec 180 s ec Sleep 1 Drive motor “off” ti mer
Sl2Cut In 35°F 33°F S l eep 2 Cut in temperature
Sl2Ct O ut 30°F 30.5°F Sleep 2 Cut out temperature
DftOffTm 600 sec 600 sec No Sens or Default “off” time. Us ed i n c ase of sensor failure
E131 & F131
*
22°F
20
15 sec
300 sec
Stora ge M e nu
* The CutOut value needs to be adjus ted to product requi rements. Refer to the 2202077 - S pec i fication S heet for E131/ F 131
OT2 Int ell i t ec Control loc ated in the plastic pouch behind the left s i de panel.
** The Refriger s etting on the ri ght control board must be set to None.
DISPLAY MODE DEFINITION
Refriger All Set to None, 1 Hopper, 2 Hopper, or Cabinet
HprCutIn All Refrigerated cab cut in t emperature
HprCtOut All Refrigerated cab cut out temperature
Hpr Off No Sens or Default “off” time. Us ed i n case of sensor failure
Hpr On No S ens or Default “on” ti m e. Us ed i n c ase of sensor failure
E131 & F131
** 2 Hopper
37.5°F
32°F
13 sec
130 sec
T able 1-1 IntelliTec Control Setting Specifications
7
8
SECTION 2
INSTALLATION INSTRUCTIONS
2.1 SAFETY PRECAUTIONS
Do not attempt to operate the machine until the safety
precautions and operating instructions in this manual are
read completely and are thoroughly understood.
Take notice of all warning labels on the machine. 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 machine. Labels should be checked periodically to be sure they can be recognized as warning labels.
If danger, warning or caution labels are needed, indicate
the part number, type of label, location of label, and
quantity required along with your address and mail to:
STOELTING
A TTENTION: Customer Service
502 Hwy . 67
Kiel, Wisconsin 53042
2.2 SHIPMENT AND TRANSIT
The machine has been assembled, operated and inspected
at the factory. Upon arrival at the final destination, the
entire machine must be checked for any damage which
may have occurred during transit.
With the method of packaging used, the machine should
arrive in excellent condition. THE CARRIER IS RESPONSIBLE FOR ALL DAMAGE IN TRANSIT, WHETHER
VISIBLE OR CONCEALED. Do not pay the freight bill until
the machine has been checked for damage. Have the
carrier note any visible damage on the freight bill. If
concealed damage and/or shortage is found later, advise
the carrier within 10 days and request inspection. The
customer must place claim for damages and/or shortages
in shipment with the carrier. Stoelting, Inc. cannot make
any claims against the carrier.
2.3 MACHINE INSTALLATION
WARNING
Installation must be completed by a qualified
electrician/refrigeration specialist.
Incorrect installation may cause personal injury , severe damage to the machine and will void factory
warranty.
Figure 2-1 Space and Ventilation Requirements
Place a bubble level on top of the machine at each
corner to check for level condition. If adjustment
is necessary, level the machine by turning the
bottom part of each leg in or out.
C. The machine has a base gasket that must be
installed. Separate the gasket and install it with
the seam to the back. Make sure the angled side
of the gasket is facing up.
C. Correct ventilation is required. The right side of the
machine is the air intake and left side is the
discharge. Both sides must have 3" clearance.
CAUTION
Failure to provide adequate ventilation will void warranty .
D. Place the Main Freezer Power Off/On switch in
the OFF position.
E. Connect the power cord to the proper power
supply. The plug connected to the machine is a
NEMA 6-20P. Check the nameplate on your
machine for proper supply. The unit must be
connected to a properly grounded receptacle.
The electrical cord furnished as part of the machine
has a three prong grounding type plug. The use of
an extension cord is not recommended, if
necessary use one with a size 12 gauge or heavier
with ground wire. Do not use an adapter to
circumvent the grounding requirement.
Installation of the machine involves moving the machine
close to its permanent location, removing all crating,
setting in place, assembling parts, and cleaning.
A. Uncrate the machine.
B. Accurate leveling is necessary for correct drainage
of machine barrel and to insure correct overrun.
WARNING
Do not alter or deform electrical plug in any way.
Altering the plug to fit into an outlet of different configuration may cause fire, risk of electrical shock,
product damage and will void warranty .
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SECTION 3
INITIAL SET-UP AND OPERATION
3.1 OPERATOR’S SAFETY PRECAUTIONS
SAFE OPERATION IS NO ACCIDENT; observe these
rules:
A. Know the machine. Read and understand the
Operating Instructions.
B. Notice all warning labels on the machine.
C. Wear proper clothing. Avoid loose fitting garments,
and remove watches, rings or jewelry that could
cause a serious accident.
D. Maintain a clean work area. Avoid accidents by
cleaning up the area and keeping it clean.
E. Stay alert at all times. Know which switch, push
button or control you are about to use and what
effect it is going to have.
F. Disconnect power for maintenance. Never attempt
to repair or perform maintenance on the machine
until the main electrical power has been
disconnected.
G. Do not operate under unsafe operating conditions.
Never operate the machine if unusual or excessive
noise or vibration occurs.
3.2 OPERATING CONTROLS AND
INDICATORS
Before operating the machine, it is required that the
operator know the function of each operating control. Refer
to Figure 3-1 for the location of the operating controls on the
machine. For the information regarding error codes displayed on the control panel, refer to the troubleshooting
section of this manual.
WARNING
High voltage will shock, burn or cause death. The
OFF-ON switch must be placed in the OFF position
prior to disassembling for cleaning or servicing. Do
not operate machine with panels removed.
Main Freezer
Power Off/On
Freezing Cylinder
Off/On Switch
Dispense Rate
Adjustor
IntelliT ec Control
(See Figure 3-2)
Figure 3-1 Machine Controls
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A. MAIN FREEZER POWER SWITCH
The Main Freezer Power switch is a two position rocker
switch that supplies power to the IntelliTec control, freezing cylinder circuits and hopper refrigeration system. When
the switch is placed in the ON position, the hopper refrigeration system will run until the preset temperature is
reached; then it will cycle ON and OFF to maintain that
temperature.
B. FREEZING CYLINDER OFF/ON SWITCH
The Freezing Cylinder OFF/ON switch is a two position
toggle switch used to supply power to the freezing cylinder
control circuit. When the switch is in the OFF position, the
freezing cylinder’s refrigeration system and auger will not
operate. When the switch is in the ON position, the
machine will be operational.
C. SPIGOT SWITCH
The spigot switch is mounted to the spigot cam assembly
behind the header panel. When the spigot is opened to
dispense product, the spigot switch opens and the "Serve
Mode" begins.
D. DISPENSE RATE ADJUSTOR
The dispense rate adjustor is located under the header
panel, to the immediate right of the spigot handles. Turning the knob counterclockwise will decrease the dispense
rate.
E. PUSH TO FREEZE BUTTON
The PUSH TO FREEZE button is a membrane or snap
switch used to initiate "Serve Mode".
NOTE
After the PUSH TO FREEZE button is pressed, the
drive motor starts. Af ter a 3-second delay , the compressor will start.
F. LEDS
The membrane switch (touchpad) features two lights: a
green LED and an amber LED. The green LED is lit during
"Serve Mode". During freeze down, it is not lit. When
product consistency approaches 75% in the freezing
cylinder, the green LED flashes. The amber LED is on
during all other modes. Both LEDs alternatively flash if an
error occurs or if the freezing cylinder is off.
G. CLEAN BUTTON
The CLEAN button is a membrane, or snap switch. When
the button is pressed, the freezing cycle stops and the
drive motor will start. A CLEAN message will display on the
LCD screen along with a 5-minute countdown timer. To
exit the CLEAN mode, turn the Freezing Cylinder OFF/ON
switch to the OFF position or press the CLEAN button
again. If the machine is left in CLEAN for more than 20
minutes, an error code (E4) will be displayed on the display
panel. Place the Freezing Cylinder OFF/ON switch in the
OFF position and back in the ON position to clear this
error.
Push to Freeze
Green LED
Amber LED
Clean Button
SEL Button
SET Button
Left Arrow Button
Up Arrow Button
Figure 3-2 IntelliT ec Control
H. DRIVE MOTOR OVERLOAD
The internal drive motor overload will trip if the drive motor is
overloaded. It will reset after approximately 10-12 minutes.
If the drive motor continues to trip, refer to Troubleshooting
in Section 7.
I. MIX LOW LIGHT INDICATOR
A MIX LOW message will appear on the LCD display to
alert the operator of a low mix condition. The message will
display when there is approximately one gallon of mix left
in the hopper. When the MIX LOW message is displayed,
refill the hopper immediately.
L. MENU NAVIGATION BUTTONS
The Menu Navigation Buttons allow the user to display
information regarding the machine’s status of operation as
well as adjust product consistency (Fig. 3-2).
Selection Button (SEL) The SEL button is used
in combination with the up arrow button to enter
into the settings of the IntelliTec control. This
button is also used to navigate through the control
settings menu.
Set Button (SET) The SET button is used to save
a change made to the product consistency setting.
It is also used to save changes when modifying
control settings.
Left Arrow Button (⇐) If the left arrow button is
pressed for 5 seconds, the display will remain lit.
To turn the light off, press the left arrow button for
5 seconds. The left arrow button is used primarily
to navigate through the control settings.
Up Arrow Button (⇑) After pressing the SET
button, the up arrow button will change the value
of the product consistency setting. This button is
also used to navigate through the control settings.
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3.3 IMPORTANT INFORMATION REGARDING CLEANING
AND SANITIZING
Soft serve machines require special consideration when it
comes to food safety and proper cleaning and sanitizing.
The following information specifically covers issues for
cleaning and sanitizing frozen dessert machines. This
information is meant to supplement a comprehensive food
safety program.
SOIL MATERIALS ASSOCIATED WITH FROZEN
DESSERT MACHINES
MILKFAT/BUTTERFAT – As components of ice-cream/
frozen custard mix, these soils will accumulate on the
interior surfaces of the machine and its parts. Fats are
difficult to remove and help attribute to milkstone buildup.
MILKSTONE – Is a white/gray film that forms on equipment and utensils that are exposed to dairy products.
These films will accumulate slowly on surfaces because of
ineffective cleaning, use of hard water, or both. Milkstone
is usually a porous deposit, which will harbor microbial
contaminants and eventually defy sanitizing efforts.
Once milkstone has formed, it is very difficult to remove.
Without using the correct product and procedure, it is
nearly impossible to remove a thick layer of milkstone.
(NOTE: general-purpose cleaners DO NOT remove
milkstone.) This can lead to high bacteria counts and a
food safety dilemma.
IT IS BEST TO CONTROL MILKSTONE ON A DAILY
BASIS BEFORE IT CAN BECOME A SIGNIFICANT FOOD
SAFETY PROBLEM.
In addition to food safety, milkstone can cause premature
wear to machine parts, which can add to costs for replacement parts or possibly more expensive repairs if worn
machine parts are not replaced once they have become
excessively worn.
IMPORTANT DIFFERENCES BETWEEN CLEANING
AND SANITIZING
CLEANING vs. SANITIZING
It is important to distinguish between cleaning and sanitiz-
ing. Although these terms may sound synonymous, they
are not. BOTH are required for adequate food safety and
proper machine maintenance.
CLEANING
· Is the removal of soil materials from a surface.
· Is a prerequisite for effective sanitizing.
NOTE
An UNCLEAN surface will harbor bacteria that can
defy sanitizing efforts.
Bacteria can develop and resist sanitizing efforts within a
layer of soil material (milkstone). Thorough cleaning procedures that involve milkstone removal are critical for
operators of frozen dessert machines.
SANITIZING
· Kills bacteria.
· Can be effective on clean surfaces only.
NOTE
Using a SANITIZER on an unclean surface will not
guarantee a clean and safe frozen dessert machine.
PROPER DAILY MAINTENANCE:
The Only Way to Assure Food Safety and Product Quality
Proper daily maintenance can involve a wide variety of
products and procedures. Overall, the products and procedures fall into three separate categories. (Please note
that this is a brief overview intended for informational
purposes only.)
1. CLEANING – This involves draining mix from the
freezing cylinder and rinsing the machine with
water. Next, a cleaner is run through the machine.
Then, the machine is disassembled and removable
parts are taken to the sink for cleaning.
2. MILKSTONE REMOVAL – Since most cleaners
do not have the ability to remove milkstone, the
use of a delimer becomes necessary. Although
this procedure may not be needed on a daily
basis, it will usually follow the cleaning procedure.
It requires letting a delimer solution soak in the
machine for an extended period. Individual parts
are also soaked in a deliming solution for an
extended period of time (more about delimers in
Additional Information).
3. SANITIZING – After the machine has been cleaned
and contains no milkstone, the machine is
reassembled. Then a FDA-approved sanitizing
solution is run through the machine to kill bacteria.
The machine is then ready for food preparation.
As a recommended cleaner and sanitizer for your frozen
dessert machine, STERA-SHEEN has proven to be one of
the best daily maintenance products for:
· CLEANING – Thorough removal of all solids
including butterfat and milk fat.
· MILKSTONE REMOVAL – Complete removal of
milkstone.
· SANITIZING – FDA-approved no rinse sanitizer
for food contact surfaces.
ADDITIONAL INFORMATION
THE USE OF DELIMERS
A delimer is a strong acid that has the ability to dissolve
milkstone. This type of chemical may become necessary
once high levels of milkstone have developed. While
these products are very effective for removing HIGH
levels of milkstone, they are not ideal for two reasons:
1. PRODUCT SAFETY – Strong acids are dangerous
chemicals. Carefully follow safety instructions
provided with delimer products.
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