This manual provides basic information about the machine. Instructions and suggestions are
given covering its operation and care.
The illustrations and specif 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.
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
specif c safety information, the following safety def nitions 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.
The Stoelting E112-LJ /F112-LJ counter machines are
gravity fed. The machines are equipped with fully automatic
controls to provide a uniform product. This manual is
designed to help qualified service personnel and operators
with the installation, operation and maintenance of the
Stoelting E112-LJ /F112-LJ gravity machines.
Following is an explanation of the normal operation modes
on the E112-LJ and F112-LJ (Refer to Figure 1-3).
NOTE
Slush mode has two options: normal and continuous drive. With the continuous drive option selected,
the drive motor will run at all times, including standby .
T o change the control between the two options, refer to Section 4.3.
A.PRE STIR
When the CLEAN-OFF-ON is moved into the ON position
or when the spigot is opened, the drive motor will start a 4second pre stir. A consistency check will determine if a
freezing cycle will begin.
B.FREEZING CYCLE
After the pre stir, a freezing cycle begins. The freezing cycle
continues until the torque rod closes the torque switch and
keeps the switch closed for 3 seconds. If product consistency is not met within 22 minutes, the machine will operate
in the compressor time out mode (See Section 1.4).
NOTE
If the spigot is pulled during a freezing cycle, the 22minute timer will restart.
C.POST STIR
After the freezing cycle ends, the drive motor will continue
to run for an 18 second post stir. The post stir ensures the
product does not freeze to the cylinder. If the spigot is
opened during the post stir, the machine will check consistency. If the product is at consistency, the machine will
move into standby. If the product is not at consistency, the
machine will start a freezing cycle.
D.STANDBY
After the post stir, the machine will be in standby. It will
remain in standby for 7 minutes or until the spigot is opened.
E.DEFROST MODE
If the spigot is not opened for 3 hours, defrost mode will
begin. The drive motor will run for 90 seconds every 7
minutes and the diagnostic light will remain lit.
After 8 hours or if the spigot is opened, normal operation
mode will begin.
F.CLEAN MODE
When the CLEAN-OFF-ON switch is in the CLEAN position, the drive motor starts and will run for 20 minutes. After
the 20 minutes expire, the drive motor will stop and the
diagnostic light will flash three times every 4 seconds. It will
continue to flash until the CLEAN-OFF-ON switch is moved
out of the CLEAN position.
Figure 1-3 Modes of Normal Operation
4
Figure 1-4 Compressor Time Out Mode
1.4OPERATION DURING AN ERROR
MODE
A.COMPRESSOR TIME OUT MODE
If the freezing cycle exceeds 22 minutes, the machine will
operate on timers. The diagnostic light will flash once every
4 seconds (Refer to Figure 1-4).
B.LOW MIX MODE
If the mix level falls below the sensor probe, the auto fill
system will attempt to fill the hopper. The ADD MIX light will
flash for a couple of seconds while the solenoid opens and
fills the hopper. If the bag in box (BIB) is empty, the vacuum
shutoff on the auto fill pump will automatically shut the
pump off and the ADD MIX light will continuosly flash. The
machine will continue to operate on timers until the empty
BIB is replaced and the mix in the hopper is above the
sensor probe (Refer to Figure 1-5).
NOTE
After the BIB is replaced the vacuum shutoff on the
auto fill pump will automatically reset. The solenoid
may have a max runtime error. Turn the Clean/Off/
On switch Off and back On.
Figure 1-5 Low Mix Mode
5
Figure 1-6 Drive Motor Error Mode
C.DRIVE MOTOR ERROR MODE
If the control does not sense current from the drive motor
during a pre stir, the machine will go into standby mode for
7 minutes. After standby, the control will repeat the pre stir
and attempt to sense drive motor current. After the third pre
stir without sensing drive motor current, the machine will
operate on timers and the diagnostic light will flash twice
every four seconds (Refer to Figure 1-6). The attempts to
sense the drive motor current can be substituted by pulling
the spigot.
6
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
Figure 2-2 Space and Ventilation Requirements
E.Correct ventilation is required. The E112-LJ requires
3” clearance on both sides. If the machine is placed
side-by-side next to other equipment, there needs
to be at least 4” clearance at the back of the
machine. The air-cooled F112-LJ requires 6”
clearance on both sides for proper air flow.
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 cannot make any
claims against the carrier.
2.3 MACHINE INSTALLATION
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.Determine the location of the machine. The location
must be able to hold 350 lbs.
C.Accurate leveling is necessary for correct drainage
of machine barrel and to insure correct overrun.
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.
D.The F112-LJ 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.
CAUTION
Failure to provide adequate ventilation will void warranty.
F.Connect the drip tray bracket by loosening the two
screws at the front of the machine. Install the
bracket so that it rests on the nylon washer
between the two metal washers. Tighten the screws.
Figure 2-3 Drip Tray Bracket
G.Place the CLEAN-ON-OFF switch in the OFF
position.
7
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.
H.Connect the power cord to the proper power
supply. The plug on the E112 is designed for
115VAC / 20 amp duty and the plug on the F112 is
designed for 208-240VAC / 15 amp duty. 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 get around grounding requirement.
2.4 AUTO FILL PUMP INSTALLATION
The auto fill pump is powered by water and has a fixed orifice
that delivers water and syrup to the machine at an exact
ratio. The auto fill kit is designed for use with Bag In Box
(BIB) concentrated syrup.
Follow these instructions to properly install the brix pump
A.Route the clear tubing with the BIB connector to
the BIB. If there is excess tubing, trim it and
reconnect it to the BIB connector.
B.Route the water line tubing to the shutoff valve of the
water supply. Trim excess tubing and connect it to
the shutoff valve.
C.Route the water line and syrup line tubing (3/8”
braided tubing) from the pump to the machine.
water inlet
from shutoff
valve
syrup inlet
from BIB
Figure 2-5 Top View of Pump
D.Route the water line tubing to the tube exiting the
rear panel. Trim excess tubing and connect.
E.Route the syrup line to the tubing connected to the
adapter on the hopper cover. Trim excess tubing
and connect.
F.Check that the clear tubing coming out of the rear
panel is connected to the plug in the hopper cover.
If not, connect it using a clamp in the kit.
G.Check that all tubing connections are properly
clamped, fittings are tightened and the tubing is not
kinked.
water outlet
to machine
this side of
pump is
mounted to
the BIB shelf
syrup outlet
to machine
to
machine
water
inlet
Figure 2-4 Auto Fill Pump Tubing Layout
to
BIB
Figure 2-6 Auto Fill Pump Kit
8
SECTION 3
INITIAL SET-UP AND OPERATION
3.1 OPERATOR’S SAFETY PRECAUTIONS
SAFE OPERATION IS NO ACCIDENT; observe these
rules:
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 electrical cord 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
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 cabinet panels removed.
to Figure 3-1 for the location of the operating controls on the
machine.
A.Spigot Switch
The spigot switch will automatically start the auger
drive and refrigeration systems when the spigot is
opened to dispense product. When the spigot is
closed, the drive motor and compressor will remain
on until the product in the freezing cylinder reaches
the proper consistency..
Consistency
Adjustment
Screw
Diagnostic
Light
Add Mix
Indicator
Clean/Off/On
Switch
Figure 3-1 Controls
9
B.CLEAN-OFF-ON Switch
The CLEAN-OFF-ON switch is used to supply
power to the control circuit. When the switch is in
the OFF (middle) position, power will not be
supplied to the control board or refrigeration
system. When the switch is in the ON position, the
machine will operate in the freezing mode. When
the switch is in the CLEAN position, all refrigeration
will stop and the auger will start rotating.
C.ADD MIX Light
The ADD MIX light will flash to alert the operator
to a low mix condition. It does so by monitoring the
mix level in the hopper. If the ADD MIX light is
flashing, check the auto fill system to determine
the issue. Refer to the troubleshooting section for
details
D.Diagnostic Light
The Diagnostic Light will remain lit for defrost
mode. It will flash if an error occurs. The light will
flash once if there is a compressor error. There will
be two quick flashes if there is an auger error. And
there will be three quick flashes if the machine is
left in clean mode for more than 20 minutes. Refer
to the troubleshooting section for details.
E.Consistency Adjustment Screw
The Consistency Adjustment Screw increases or
decreases product consistency. A tension spring
is connected to the screw and changes the amount
of torque needed to complete a refrigeration cycle.
Turn the knob clockwise to increase consistency
or counterclockwise to decrease consistency.
F.Front Door Safety Switch
The front door safety switch prevents the auger
from turning when the front door is removed. The
switch is open when the door is not in place and
closed when the door is properly installed.
G.Hopper Probes
The mix level in the hopper is controlled by two
probes. When mix in the hopper gets below the
long probe, the solenoid opens and the hopper fills.
When the mix level reaches the short probe, the
solenoid closes.
3.3 REMOVING MIX FROM MACHINE
To remove the mix from the machine, refer to the following
steps:
A.Wash, rinse, dry and sanitize hands before starting.
B.Turn the water line lever to the Off position.
C.Place the Clean/Off/On switch to Clean and drain
the mix from the freezer into a utility bucket and
turn off the machine. Discard mix into the second
compartment of a 3-compartment sink.
D.Fill the hopper with 2 gallons of clean, cold water
using the clean white utility bucket.
E.Place the Clean/Off/On switch to Clean. Run the
machine in Clean mode for approximately 5
minutes. Continue to the next step while the
machine is cleaning.
F.Prepare Stera-Sheen Green Label Sanitizer
according to manufacturer’s instructions to provide
a 100ppm strength solution. In the blue cleaner/
sanitizer bucket, mix 1 packet of sanitizer and 2
gallons of cold water. Check the chlorine content
with a test strip to ensure 100ppm strength.
G.After 5 minutes, drain the water from the machine
into the red utility bucket and discard the water.
NOTE
If the water does not drain clear, repeat the step s.
H.Place the Clean/Off/On switch Off.
I.Fill the hopper with the 2 gallons of sanitizer
solution from the blue bucket.
J.Place the Clean/Off/On switch to Clean. Run the
machine in Clean mode for approximately 5
minutes.
K.After 5 minutes, drain the sanitizer solution from
the machine into the red utility bucket and discard
the solution.
3.4 DISASSEMBLY OF MACHINE PARTS
Inspect for worn or broken parts each time the machine is
disassembled. Replace any worn or broken parts to ensure
safety to both the operator and the customer and to
maintain good machine performance and a quality product.
Frequency of cleaning must comply with the local health
regulations.
To disassemble the machine, refer to the following steps:
CAUTION
Hazardous Moving Parts.
Revolving auger shaf t can grab and cause injury .
Place the switch in the OFF (middle) position before disassembling for cleaning or servicing.
10
Figure 3-2 Remove Spigot Pin
A.Pull out the spigot pin by its ring. Remove the
spigot handle.
NOTE
Place all parts into the lemonade parts basket immediately after removing from the machine. Place
small parts onto the small parts rod in the basket.
B.Remove front door by turning the circular knobs
and then pulling door off the studs.
NOTE
When removing front door, entire door and stator
assembly will come out as well.
C.Remove the torque rod from the stator assembly.
D.Remove the quad ring from the groove in front door.
E.Remove the stator bar. Remove the small white
bushing.
Figure 3-4 Removing O-Ring
F.Remove the o-rings at the front and back of the
stator bar by first wiping off the lubricant using a
clean paper towel. Then squeeze the o-ring upward
with a dry cloth. When a loop is formed, roll the oring out of the groove.
G.Remove the auger support bushing.
H.Turn the spigot body until the ice breaker bar can
be removed. Remove breaker bar.
I.Remove the spigot body from the front door.
J.Remove the o-rings (2) from the spigot.
K.Remove the auger assembly from the freezing
cylinder and remove the auger blade. Remove the
rear seal and o-ring from the auger.
L.Remove the drain tray, drip tray and drip tray grid.
M.Remove the hopper cover and disconnect the auto
fill adapter from the cover by pulling out the retaining
clip.
Figure 3-3 Spigot and Ice Breaker Bar Removal
3.5 CLEANING AND SANITIZING THE
MACHINE PARTS
Place all loose parts in a pan or container and take to the
wash sink for cleaning. Local and state health codes dictate
the procedure required. Some health codes require a foursink process (pre-wash, wash, rinse, sanitize, and air-dry),
while other codes 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
procedures required in your location.
A.Set up a 3-compartment sink with wash, rinse and
sanitize compartments. Use only Stera Sheen
Green Label or Kay-5 Green. Prepare sanitizer
according to manufacturer’s instructions to provide
a 100ppm strength solution. Set aside a small
amount of sanitizer
B.Clean all parts using brushes provided.
C.After cleaning, remove the parts and let air dry.
11
Figure 3-5 Cleaning Freezing Cylinder
D.Sanitize the hopper and freezing cylinder with
sanitizer. Be sure to clean the rear seal surfaces
inside the freezing cylinder.
E.Wipe down the outside of the machine and table
with a yellow sanitized towel.
3.6 ASSEMBLY OF MACHINE
CAUTION
Do not allow sanitizer to remain in contact with stainless steel p arts for prolonged periods. Prolonged
contact of sanitizer with machine may cause corrosion of stainless steel parts.
To assemble the machine parts, refer to the following steps:
NOTE
Petrol Gel sanitary lubricant or equivalent must be
used when lubrication of parts is specified.
NOTE
The United States Department of Agriculture and
the Food and Drug Administration require that lubricants used on food processing equipment be certified for this use. Use lubricants only in accordance
with the manufacturer’s instructions.
A.Wash, rinse, dry and sanitize hands before starting.
B.Place the rear seal o-ring onto the auger and apply
a thin film of Petrol-Gel to the o-ring.
C.Assemble the rear seal onto the auger with the
large end of the seal to the rear. Lubricate the hex
end of the auger with a small amount of spline
lubricant.
D.Install the plastic auger blade onto the auger. Push
the auger into the freezing cylinder and rotate it
slowly until the auger engages the drive shaft.
E.Assemble the o-rings onto the spigot body and
apply a thin film of Petrol-Gel onto the o-rings.
F.Insert the spigot body into the front door.
NOTE
When inserting the spigot body, press the o-rings
against the spigot to prevent damage.
T orque
Rod
Auger
Support
Bushing
Stator Bar
Front O-Ring
figure 3-6 Door and Stator Assembly
Stator Bar
Bushing
Stator Bar
12
Stator Bar
Rear O-Ring
Quad
Ring
G.Turn the spigot body until the ice breaker bar can
be inserted. Insert the ice breaker bar and rotate
spigot body 90°.
H.Apply Petrol-Gel to the inside and outside of the
front auger support bushing. Install the bushing
onto the front door so the beveled edge of the
bushing is against the door.
I.Install the large quad ring into the groove in the front
door.
J.Install the o-rings at the front and back of the stator
bar. Apply a thin film of Petrol-Gel onto the o-rings.
Install the small white bushing to the stator bar.
K.Insert the stator bar into the front door and insert
the torque rod through the hole in the stator bar.
L.Install the front door onto the freezer. Install the
knobs onto the studs.
NOTE
When installing the front door , the torque rod must
be placed in the center notch of the torque actuator
arm.
M.Insert the spigot handle so the hole lines up and
insert the spigot pin.
N.Install the drain tray, drip tray and drip tray grid.
3.7 SANITIZING
Sanitizing must be done after the machine is cleaned and
just before the hopper is filled with mix. Sanitizing the night
before is not effective. However, you should always clean
the machine and parts after each use.
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.
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 according to manufacturer’s instructions to
provide a 100 parts per million (ppm) strength solution and
check the solution with chlorine test strips. Mix sanitizer in
quantities of no less than 2 gallons (7.5 liters) of 90° to
110°F (32° 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.
In general, sanitizing may be conducted as follows:
A.Prepare Stera-Sheen Green Label Sanitizer
according to manufacturer’s instructions to provide
a 100ppm strength solution. In the blue cleaner/
sanitizer bucket, mix 1 packet of sanitizer and 2
gallons of cold water. Check the chlorine content
with a test strip to ensure 100ppm strength.
B.Pour the sanitizing solution into the hopper.
C.Place the Clean/Off/On switch to Clean.
D.Use a sanitized barrel brush to sanitize the hopper
sides and hopper cover with the sanitizer solution
in the hopper.
E.After 5 minutes, drain the sanitizer solution from
the machine into the red utility bucket and discard
the solution. Leave a small amount of sanitizer
solution in the freezing cylinder.
F.Place the Clean/Off/On switch Off.
G.Collect the remaining sanitizer in a clean cup and
check the chlorine content with a test strip. If the
chlorine content is less than 100ppm, repeat the
sanitizing procedure. If the test strip does not read
100ppm after the second test, repeat the
disassembly, cleaning and sanitizing procedures.
H.Connect the auto fill adapter to the hopper cover
with the retaining clip and place the hopper cover
onto the hopper.
I.Turn the water line lever to the On position.
J.Turn the Clean/Off/On switch On. Open the spigot
to drain out any remaining sanitizer into the red
utility bucket. Close the spigot when mix begins
coming out.
3.8 FREEZE DOWN AND OPERATION
This section covers the recommended operating procedures for the safe operation of the machine.
A.After the freezing cylinder is filled, product will be
ready to serve in 8 to 12 minutes.
B.To dispense, pull the spigot handle down to open
the spigot.
CAUTION
Do not allow sanitizer to remain in contact with stainless steel p arts for prolonged periods. Prolonged
contact of sanitizer with machine may cause corrosion of stainless steel parts.
13
C.The machine is designed to dispense the product
at a reasonable draw rate. If the machine is
overdrawn, the result is a wet product or a product
that will not dispense at all. If this should occur,
allow the machine to run for approximately 30
seconds before dispensing additional product.
D.Do not operate the machine when the ADD MIX
light is on. Immediately check if the auto fill system
is operating properly.
NOTE
After 3 hours if the spigot is not opened, the machine will go into defrost mode. During this time, the
diagnostic light will be lit and the auger will run for 90
seconds every 7 minutes. Defrost mode maintains
consistency in the product and prevents large ice
crystals from forming. T o end defrost mode, turn the
Clean/Off/On switch Off then back On. Defrost mode
will also end if the spigot is opened.
3.9 MIX INFORMATION
Mix can vary considerably from one manufacturer to another. Differences in the quantity and quality of ingredients
have a direct bearing on the finished frozen product. A
change in machine performance that cannot be explained
by a technical problem may be related to the mix.
Proper product serving temperature varies from one
manufacturer’s mix to another. Stackable slush mixes
provide satisfactory product from 24° to 28°F (-4° to -2°C).
When checking the temperature, stir the thermometer in
the frozen product to obtain an accurate reading.
D.QUARTERLY
Air Cooled
The air-cooled condenser is a copper tube and aluminum fin
type. Condensing is totally dependent upon airflow. A
plugged condenser filter, condenser, or restrictions in the
louvered panel will restrict airflow. This will lower the
capacity of the system and damage the compressor.
The condenser must be kept clean of dirt and grease. The
F112 must have a minimum of 6” (15.2 cm) of ventilation on
the right and left sides of the unit for free flow of air. The E112
must have 3” (7.6 cm) of ventilation. Make sure the machine
is not pulling over 100° F (37° C) air from other equipment
in the area.
The condenser and condenser filter require periodic cleaning. To clean, refer to the following procedures.
E112 Air Cooled Condenser Cleaning
A.Unscrew the knob located on the underside of the
machine towards the front (Fig. 3-7).
B.Remove the filter bracket and remove the filter.
C.Visually inspect the condenser filter for dirt.
D.If the filter is dirty, vacuum or brush clean, rinse with
clean water and allow to dry before replacing on the
machine.
NOTE
If the condenser is not kept clean, refrigeration efficiency will be lost.
3.10 ROUTINE CLEANING
To remove spilled or dried mix from the machine exterior,
wash in the direction of the finish with warm soapy water
and wipe dry. Do not use highly abrasive materials as they
will mar the finish.
3.11 PREVENTIVE MAINTENANCE
Stoelting recommends that a maintenance schedule be
followed to keep the machine clean and operating properly.
B.DAILY
1.The exterior should be kept clean at all times to
preserve the luster of the stainless steel. A mild
alkaline cleaner is recommended. Use a soft cloth
or sponge to apply the cleaner.
C.WEEKLY
1.Check o-rings and rear seal for excessive wear and
replace if necessary.
2.Remove the drip tray by gently lifting up to disengage
from the support and pulling out. Clean behind the
drip tray and front of the machine with a soap
solution.
Figure 3-7 E112 Condenser Filter Removal
14
Figure 3-8 F112 Condenser Filter Removal
F112 Air Cooled Condenser Cleaning
A.Remove the Phillips head screws from the bottom
of the left side panel, and then slide the panel down
and out.
B.To remove the condenser filter, grasp the top and
pull off. Visually inspect for dirt. If the filter is dirty,
shake or brush excess dirt off the filter and wash in
warm, soapy water. Once the filter is clean rinse
thoroughly in warm, clear water and shake dry,
taking care not to damage the filter in any way (Fig.
3-8).
C.Visually inspect the condenser for dirt by shining
a light through the coil from the back (inside) of the
condenser.
D.If the condenser is dirty, place a wet towel over the
front (outside) of the condenser.
E.Using a vacuum, carefully clean the condenser coil
from the inside and outside of the machine. A stiff
bristled brush may help in releasing debris from
between the condenser coils.
Water Cooled (F112 only)
The water-cooled condenser is a tube and shell type. The
condenser needs a cool, clean supply of water to properly
cool the machine, inlet and discharge lines must be 3/8” I.D.
minimum. Make sure the machine is receiving an unrestricted supply of cold, clean water.
E.SEMI-ANNUALLY
1.Disconnect the machine from the power source.
2.Check drive belt for proper tension. Push belt in
with one finger, belt should deflect about 3/8".
3.Lubricate condenser fan motor with S.A.E. 20
weight oil. Three to six drops are required.
4.Sanitize the autofill system following the steps
below:
AUTO FILL SANITIZING
A.If necessary, disassemble, clean and sanitize the
machine.
NOTE
If the machine does not require cleaning and sanitizing, turn it off and dispense enough product so
that the mix level in the hopper is below the long
probe. If the mix level is above the long probe, the
solenoid will not activate and the pump will not operate.
B.Prepare Stera-Sheen Green Label Sanitizer
according to manufacturer’s instructions to provide
a 100ppm strength solution. In the blue cleaner/
sanitizer bucket, mix 1 packet of sanitizer and 2
gallons of cold water. Check the chlorine content
with a test strip to ensure 100ppm strength.
C.Cut an adapter from an empty bag of syrup.
Connect the adapter to the BIB connector of the
syrup line. Put the BIB connector into the bucket
of sanitizer.
NOTE
If you do not have an empty bag of syrup, remove
the plug from the top of the BIB connector. Do not
lose the plug; it is needed for proper operation of the
BIB.
D.Hold the hopper cover over a bucket and set the
machine to clean. The solenoid will activate and
the brix pump will pump sanitizer into the bucket.
NOTE
The solenoid will only activate when there is not any
liquid touching the longer mix probe in the hopper.
E.After all the sanitizer has run through the pump,
turn the machine off.
F.Disconnect the bag adapter from the BIB connector
(or reinsert the plug into the connector). Connect
the BIB connector to the syrup BIB.
G.Set the machine to clean and hold the hopper cover
over a bucket. This will flush the sanitizer out of the
pump and tubing. When pure syrup comes out of
the tubing, turn the machine off.
H.The machine is now ready to operate. Place the
hopper cover on the hopper and turn the machine
on.
15
3.12 EXTENDED STORAGE
Refer to the following steps for storage of the machine over
any long period of shutdown time:
A.Follow the cleaning and sanitizing procedures for
the machine and follow the semi-annual instructions
to sanitize the auto fill system.
B.Place the CLEAN-OFF-ON switch in the OFF
(middle) position.
C.Disconnect (unplug) from the electrical supply
source.
D.Clean thoroughly with a warm water detergent all
parts that come in contact with the mix. Rinse in
clean water and dry parts. Do not sanitize.
NOTE
Do not let the cleaning solution stand in the hopper
or in the freezing cylinder during the shutdown period.
E.Remove, disassemble and clean the front door,
mix inlet regulator and auger parts.
F.In a water cooled machine, disconnect water lines
and drain water. With a flathead screwdriver, hold
the water valve open and use compressed air to
clear the lines of any remaining water.
16
SECTION 4
MAINTENANCE AND ADJUSTMENTS
4.1MACHINE ADJUSTMENT
This section is intended to provide maintenance personnel
with a general understanding of the machine adjustments.
It is recommended that any adjustments in this section be
made by a qualified person.
Belt
4.2PRODUCT CONSISTENCY
ADJUSTMENT
The Consistency Adjustment Knob increases or decreases
product consistency by changing the amount of torque
needed to complete a refrigeration cycle. Turn the knob
clockwise to increase consistency and counterclockwise
to decrease consistency.
4.3DRIVE BELT TENSION ADJUSTMENT
To check belt tension, refer to Figure 4-2 and follow the
steps below:
A.Remove the right side panel.
B.Use a Burroughs Belt Tension Gauge to set the
tension for the drive belt. Set the E112 belt tension
to 5-15 lbs. Set the F112 belt tension to 30-40 lbs.
D.If an adjustment is necessary, loosen the four
motor plate retaining nuts, adjust belt tension then
retighten the four nuts.
NOTE
Belt life will be increased if new drive belts are
checked after two or three weeks of operation.
4.4AUTO FILL PUMP MAINTENANCE
After prolonged periods without sanitizing, the pump valves
could become stiff or clogged. If this is suspected, the valve
cartridges can be removed for inspection. There are four
cartridges in the pump, two inlet and two outlet.
Tension
Adjustment
Nut
Figure 4-1 Belt T ension
A.Turn off the water supply and relieve pressure in the
line by opening the spigot.
B.Loosen the screw. Turn the cartridge and pull it out
of the housing.
NOTE
Disassemble the cartridges separately to ensure the
inlet and outlet parts remain with the correct cartridge.
C.Inspect the duckbill valve for a tight seal in the
closed position.
D.The valve should have a quick action when pressed
open and the material should not be hard or stiff.
E.Replace the valve and o-ring if necessary.
F.Reassemble the cartridge and install it into the
housing on the pump.
Inlet Valve
Cartridge
Inlet Duckbill
Valve
Cartridge
O-Ring
Outlet Duckbill
Valve
Inlet Valve
Support
Figure 4-2 Auto Fill Pump Valves
17
Outlet Valve
Cartridge
Cartridge
O-Ring
Outlet Valve
Support
18
SECTION 5
REFRIGERATION SYSTEM
5.1 REFRIGERATION SYSTEM
The E112-LJ and F112-LJ refrigeration systems have two
functions:
Medium-Temperature - Maintaining product
temperature in the hopper.
Low-Temperature - Producing and maintaining
high quality product in the freezing cylinder.
The system is designed for efficient use with R404A
refrigerant. The proper charge is indicated on the information plate.
5.2 REFRIGERANT RECOVERY AND
EVACUATION
Refer to the following procedures to properly recover and
evacuate the refrigeration system. Do not purge refrigerant into the atmosphere.
NOTE
For qualified service personnel only . Anybody working with refrigerants must be certified as a Technician TYPE I as required by 40 CFR 82 Subpart F
and hold all State and/or local refrigerant handling
certifications. In addition, all handling, storage, and
disposal of refrigerants must be in accordance with
Environmental Protection Agency (EP A) guidelines
and standards and all State and local guidelines and
standards.
WARNING
Hazardous voltage
The CLEAN-OFF-ON switch must be placed in the
OFF position when disassembling for servicing. The
machine must be disconnected from electrical supply before removing any access p anel. Failure to
disconnect power before servicing could result in
death or serious injury.
!
##
$#
"
##
Figure 5-1 F112-LJ Refrigeration Diagram
19
A.Disconnect the machine from electrical supply
before removing any panels for servicing.
B.Remove the right side panel.
C.If evacuating the system, connect a vacuum gauge
to the Schrader valve next to the evaporator.
D.Connect the recovery or evacuation unit to the
suction and discharge service valves of the
compressor.
E.Perform the recovery or evacuation:
For recovery
Operate the recovery unit per manufacturer’s
instructions.
For evacuation
Evacuate the system until the gauge reads 300
microns of mercury (300µ Hg). Turn off
evacuation unit and wait 5 minutes.
If the gauge stays below 500µ Hg, the system is
properly evacuated.
If the gauge slowly rises to 1500-2000µ Hg,
there is still moisture in the system and further
evacuation is required.
If the gauge rises to atmosphere, the system
has a leak which must be resolved before
continuing.
F.Remove evacuation or recovery unit and gauge.
B.If the system has been opened or if there was a
leak, refer to Section 5.2 - Refrigerant Recovery
and Evacuation to evacuate the system prior to
charging.
C.Refer to machine’s information plate for total charge
requirements.
NOTE
The refrigeration systems of the E1 12-LJ and F1 12LJ are critically charged. Be sure to charge the system to the weight listed on the machine’s information plate.
cylinder to the discharge Schrader valve of the
compressor.
E.Add the proper amount of refrigerant according to
the machine’s information plate.
5.4 COMPRESSOR
The E112-LJ and F112-LJ have hermetic reciprocating
compressors (Refer to Figures 5-2 and 5-3).
5.3 REFRIGERANT CHARGING
Refer to the following procedures to properly charge the
refrigeration system. Stoelting recommends liquid refrigerant charging.
NOTE
For qualified service personnel only . Anybody working with refrigerants must be certified as a Technician TYPE I as required by 40 CFR 82 Subpart F
and hold all State and/or local refrigerant handling
certifications. In addition, all handling, storage, and
disposal of refrigerants must be in accordance with
Environmental Protection Agency (EP A) guidelines
and standards and all State and local guidelines and
standards.
A.Ensure the electrical supply has been removed
before continuing.
WARNING
Hazardous voltage
The CLEAN-OFF-ON switch must be placed in the
OFF position when disassembling for servicing. The
machine must be disconnected from electrical supply before removing any access p anel. Failure to
disconnect power before servicing could result in
death or serious injury.
Figure 5-2 E112-LJ Compressor
Figure 5-3 F112-LJ Compressor
20
A. WINDING TEST
To test the compressor motor windings for possible problems, perform the following steps:
A.Disconnect the machine from electrical supply
before removing any panels for servicing.
B.Remove the right side panel.
C.Remove the protective cover from the compressor
terminals. Disconnect the three terminals; C
(common), R (run), and S (start).
D.Connect an ohmmeter to the C and R terminals on
the compressor. Resistance through the run
winding should be as follows:
E112-LJ - 0.6Ω ±10%
F112-LJ - 1.41Ω ±10%
E.Connect an ohmmeter to the C and S terminals on
the compressor. Resistance through the start
winding should be as follows:
E112-LJ - 4.03Ω ±10%
F112-LJ - 2.65Ω ±10%
F.To check if windings are shorted to ground, connect
one ohmmeter lead to a bare metal part on the
compressor (such as any copper line leading to or
from the compressor) and check terminals C, R,
and S.
NOTE
The compressor is equipped with an internal overload protector. If the compressor is warm and ohmmeter readings indicate an open winding, allow up
to one hour for overload to reset.
B. COMPRESSOR REMOVAL
E112-LJ COMPRESSOR REMOVAL
A.Disconnect the machine from electrical supply
before removing any panels for servicing.
B.Remove the protective cover from the compressor
terminals and disconnect the wires.
C.Recover refrigerant charge per the instructions in
Section 5.2.
D.Leave a port open to prevent pressure buildup
during compressor removal.
E.Remove six inches of insulating tubing on the
suction line going to the compressor and unsweat
the suction and discharge line from the
compressor.
F.Remove the four nuts and washers from the base
of the compressor.
G.Remove the compressor through the side of the
machine.
H.Remove the four rubber compressor mounts from
the compressor.
I.Plug all open ports of the old compressor.
21
NOTE
A compressor returned to Stoelting with any open
ports will void the warranty . AL W AYS plug ports on
a compressor that has been removed.
F112-LJ COMPRESSOR REMOVAL
A.Disconnect the machine from electrical supply
before removing any panels for servicing.
B.Remove the protective cover from the compressor
terminals and disconnect the wires.
C.Recover refrigerant charge per the instructions in
Section 5.2.
D.Leave a port open to prevent pressure buildup
during compressor removal.
E.Remove the insulation around the tubing on the
suction line going to the compressor and unsweat
the suction line from the compressor. (Fig. 5-4)
F.Apply a heat sink (wet cloth) to the high pressure
cutout and unsweat the tubing at the tee.
G.Remove the four nuts and washers from the base
of the compressor.
H.Remove the compressor through the right side of
the machine by tilting the compressor base
outward.
I.Remove the four rubber compressor mounts from
the compressor.
J.Apply a heat sink to the high pressure cutout and
unsweat the discharge line from the compressor.
K.Unsweat the suction line access fitting from the
compressor.
I.Plug all open ports of the old compressor.
NOTE
A compressor returned to Stoelting with any open
ports will void the warranty . AL W AYS plug ports on
a compressor that has been removed.
Unsweat
Tubing
Figure 5-4 Compressor Removal - F112-LJ
C. COMPRESSOR INSTALLATION
E112-LJ COMPRESSOR INSTALLATION
A.Make sure the machine is disconnected from the
electrical supply before servicing.
B.Install the four rubber mounts on the compressor.
C.Install the compressor into the machine, fitting the
base over the four bolt holes.
D.Install the four washers and nuts onto the bolts
and tighten securely.
E.Remove all tubing plugs from the replacement
compressor.
NOTE
The compressor plugs protect the compressor from
moisture in the air. Do not remove the plugs until
you are ready to install. The compressor must not
be opened to the atmosphere for more than 10 minutes.
F.Leave a port open to prevent pressure buildup.
Braze the suction and discharge line to the
compressor.
G.Connect the wires to the compressor terminals.
H.Replace the drier per the instructions in Section
5.8.
I.Evacuate the system per the instructions in Section
5.2
J.Recharge the system per the instructions in
Section 5.3.
K.Replace the insulating tubing on the suction line.
F112-LJ COMPRESSOR INSTALLATION
A.Make sure the machine is disconnected from the
electrical supply before servicing.
B.Remove all tubing plugs from the replacement
compressor.
NOTE
The compressor plugs protect the compressor from
moisture in the air. Do not remove the plugs until
you are ready to install. The compressor must not
be opened to the atmosphere for more than 10 minutes.
H.Leave a port open to prevent pressure buildup.
Braze the suction line to the compressor.
I.Apply a heat sink (wet cloth) to the high pressure
cutout and braze the tee to the refrigeration line.
J.Connect the wires to the compressor terminals.
K.Replace the drier per the instructions in Section
5.8.
L.Evacuate the system per the instructions in Section
5.2
M.Recharge the system per the instructions in Section
5.3.
N.Replace the insulating tubing on the suction line.
5.5 CONDENSER
The E112-LJ has an air-cooled condenser. The F112-LJ has
either an air-cooled or water-cooled condenser. The capacity
of the machine is directly related to keeping the condenser
clean and free of debris, regardless of cooling type.
The air-cooled condenser is a copper tube and aluminum fin
type. The E112-LJ must have a minimum of 3” of clearance
on the sides and the underside must be kept clear for proper
air flow. The F112-LJ must have a minimum of 6” of
clearance on the sides.
The water-cooled condenser on an F112-LJ is a tube and
shell type. This condenser requires cool, clean water to
function properly. Inlet and discharge lines must be 3/8” ID
minimum.
CONDENSER TESTING
The condenser can be checked for leaks using the bubble
test or using a leak detector.
5.6 VALVES
A. THERMOSTATIC EXPANSION VALVE (TXV)
The Thermostatic Expansion Valve (TXV) is used to meter
the refrigerant to the evaporator. It does so by maintaining
a low, constant superheat in the evaporator. The selfregulating TXV is preset by the manufacturer and adjustment is not recommended. (Fig. 5-5)
C.Apply a heat sink (wet cloth) to the high pressure
cutout and braze the tubing to the compressor.
D.With the port open, braze the access fitting to the
compressor.
E.Install the four rubber mounts on the compressor.
F.Install the compressor into the machine, fitting the
base over the four bolt holes.
G.Install the four washers and nuts onto the bolts
and tighten securely.
22
Figure 5-5 TXV
TXV TESTING & ADJUSTMENT
NOTE
The TXV bulb has an indent which must be positioned against the tubing. Good contact between
the bulb and the suction line is necessary for proper
operation of the valve. The bulb must also be well
insulated.
A.Connect a gauge to the Schrader valve on the
suction line.
B.Connect a thermocouple to the suction line next to
the evaporator. Make sure the thermocouple is
making direct contact with the suction line and
insulate the thermocouple to obtain a correct
reading.
C.Immediately before the refrigeration cycle ends,
the superheat should be 7-10°F. This temperature
is based on a full load in the freezing cylinder and
an ambient temperature of 70ºF. The gauge should
read the following:
E112-LJ: 20-22 psig
F112-LJ: 30-32 psig
D.If the readings are higher than expected, check to
see if there is an overcharge of refrigerant. Also
make sure the TXV bulb is making good contact
with the suction line and it is well insulated.
E.If the readings are lower than expected, check to
see if there is a low refrigerant charge or if there
is a restriction in the system.
NOTE
The TXV is the LAST component to adjust in the
refrigeration system.
TXV REPLACEMENT
To replace the TXV, perform the following procedures:
A.Position the TXV with a heat sink into the system.
B.With an open port, braze the TXV into the system
using appropriate brazing material.
C.Remove the heat sink from the TXV.
D.Install bulb on suction line exiting the evaporator
using existing clamp. The bulb has an indent
which must be placed against the tubing.
NOTE
The TXV bulb should AL WAYS be mounted on the
horizontal line, with the capillary end facing the flow
of refrigerant. Good contact between the bulb and
the suction line is necessary for proper operation of
the valve. The bulb must also be well insulated.
E.Tighten clamp to 20 in/lb using a torque wrench.
F.Replace insulation to the TXV and surrounding
lines.
G.Replace the drier per the instructions in Section
5.9.
H.Evacuate the system per the instructions in Section
5.2.
I.Recharge the system per the instructions in
Section 5.3.
B. HIGH PRESSURE CUTOUT
The high pressure cutout stops the compressor if the
discharge pressure reaches 445 psig (Refer to Figure 5-
6).
F.The TXV can be adjusted after the steps above
are completed. When adjusting, do not turn the
valve over 1/4 turn (90°). Turn the valve stem
clockwise to increase the superheat or
counterclockwise to decrease the superheat.
TXV REMOVAL
A.Remove the side panel.
B.Remove bulb from suction line exiting from the
evaporator.
C.Recover refrigerant charge per instructions in
Section 5.2.
D.Leave a port open to prevent pressure buildup
during TXV removal.
E.Remove any insulation from the TXV and
immediate surrounding lines.
F.Apply a heat sink (wet cloth) to the valve dome.
G.Unsweat the TXV and remove.
Figure 5-6 High Pressure Cutout
HIGH PRESSURE CUTOUT TEST
A.Connect a gauge to the Schrader valve on the
discharge line.
23
B.Disconnect cooling:
Air-Cooled - Disconnect evaporator fan
Water-Cooled - Shut off water supply
C.High pressure cutout should trip when pressure
reaches 445 psig ±9.
HIGH PRESSURE CUTOUT REMOVAL
A.Remove the right side panel.
B.Disconnect terminals from high pressure cutout.
C.Recover refrigerant charge per instructions in
Section 5.2.
D.Leave a port open to prevent pressure buildup
during removal.
E.Apply a heat sink (wet cloth) to the cutout.
F.Unsweat cutout from discharge line.
HIGH PRESSURE CUTOUT REPLACEMENT
A.Apply a heat sink (wet cloth) to the new cutout.
B.With an open port, braze the cutout to the discharge
line.
C.Replace the drier per the instructions in Section
5.9.
D.Evacuate the system per the instructions in Section
5.2.
E.Recharge the system per the instructions in
Section 5.3.
F.Connect the high pressure cutout.
C. EVAPORATOR PRESSURE REGULATOR (EPR)
There is one EPR in the refrigeration system (Refer to
Figure 5-7). It is located on the suction line of the hopper
evaporator and regulates refrigerant pressure.
E.Remove the plastic cap and loosen the locknut on
the EPR. Using a small screwdriver, turn the
adjustment screw counterclockwise 1/2 turn, then
adjust as necessary. Turn the valve stem clockwise
for less cooling or counterclockwise for more
cooling.
F.Allow the system to stabilize for 5 minutes to
ensure pressure remains stable.
EPR REMOVAL
A.Remove the side panel.
B.Recover refrigerant charge per instructions in
Section 5.2.
C.Leave a port open to prevent pressure buildup
during EPR removal.
D.Unsweat the EPR and remove.
EPR REPLACEMENT
To replace the EPR, perform the following procedures:
A.Apply a heat sink (wet cloth) to the EPR.
B.With an open port, braze the EPR into the system
using appropriate brazing material.
C.Remove the heat sink from the hot gas bypass.
D.Replace the filter drier. Refer to Section 5.8 for
details.
E.Evacuate and recharge system per instructions in
Section 5.2.
F.Adjust the suction pressure to 60 psig ±2.
D. WATER VALVE (WATER COOLED MODELS ONLY)
The water valve monitors refrigerant pressure and opens
on an increase of pressure. The opening point pressure is
the refrigerant pressure required to lift the valve disc off the
valve seat. (Figure 5-7)
Figure 5-7 EPR Valve
EPR TEST AND ADJUSTMENT
A.Place the CLEAN/OFF/ON switch in the OFF
position.
B.Connect a gauge to the Schrader valve on the
suction line.
C.Place the CLEAN/OFF/ON switch to the ON
position.
D.If the gauge does not read 60 psig ±2 then
adjustment is needed.
Figure 5-8 Water V alve
WATER VALVE ADJUSTMENT
A.Remove the back panel.
B.Connect a gauge to the compressor discharge
Schrader valve.
24
C.Take the temperature of the inlet water.
D.Connect the machine to the electrical supply, start
the refrigeration cycle, and read the pressure.
D.Refer to the chart below for correct pressures and
T able 5-1 W ater Cooled Pressure/Temperature Table
E.If the water temperature is too low, the opening
point pressure should be increased to slow the
water flow. Turn the adjustment screw
counterclockwise.
F.If the water temperature is too high, the opening
point pressure should be decreased to increase
the flow of water. Turn the adjustment screw
clockwise.
WATER VALVE REMOVAL
The water valve is connected to the refrigeration system by
capillary tube brazed to the discharge line.
A.Turn off and disconnect the water supply. Blow out
the water lines with compressed air or CO2.
B.Recover refrigerant charge per instructions in
Section 5.2.
C.Unsweat the capillary tube from the discharge line.
E.Remove the clamps from the water lines at the
valve.
F.Remove the two screws holding the water valve to
the frame and remove the valve.
WATER VALVE REPLACEMENT
To replace the water valve, perform the following procedures:
A.Position the water valve and attach to the frame
using the two screws.
B.Install the water lines onto the valve with hose
clamps.
C.Braze the capillary tube into the system using
BCuP-3 or BCuP-5 brazing material.
D.Connect the water supply line and turn on the water
supply.
E.Check for leaks in the water lines. If there are no
leaks, turn off the water supply.
F.Replace the filter drier. Refer to Section 5.8 for
details.
G.Evacuate and recharge system per instructions in
Section 5.2.
H.Turn on the water and check for leaks in the water
lines with the refrigeration system running.
I.Adjust the valve as necessary.
5.7 CAPILLARY TUBE
The capillary tube meters refrigerant flow in the hopper
evaporator (Refer to Figure 5-9). The amount of flow is
dependent on the length and ID of the capillary tube as well
as the refrigerant charge.
Figure 5-9 Capillary T ube
CAPILLARY TUBE REMOVAL
A.Recover refrigerant charge per instructions in
Section 5.2.
B.Leave a port open to prevent pressure buildup
during capillary tube removal.
C.Remove foam insulation from the capillary tube at
the evaporator inlet.
C.Unsweat the capillary tube and remove.
CAPILLARY TUBE REPLACEMENT
A.Position the capillary tube in place.
B.Apply a heat sink (wet cloth) to the capillary tube
and drier assembly.
C.With an open port, braze the capillary tube into the
system using appropriate brazing material.
D..Replace foam insulation to the capillary tube at the
evaporator inlet.
E.Evacuate the system per instructions in Section
5.2.
F.Recharge the system per instructions in Section
5.3.
25
5.8 FILTER DRIER
The filter drier must be replaced every time the refrigeration
system is opened for service. A new filter drier improves
operation of the entire refrigeration system by stopping the
circulation of moisture and by removing harmful contaminants (Refer to Figure 5-10).
Figure 5-10 Filter Drier
FILTER DRIER REMOVAL
A.Recover refrigerant charge per instructions in
Section 5.2.
B.Cut the refrigeration line as close to the filter drier
as possible and remove drier.
C.Cap the ends of the drier using the plugs from the
new drier.
NOTE
The drier must be capped to prevent moisture from
the environment
FILTER DRIER REPLACEMENT
A.Position the filter drier so the arrow is pointing
towards the evaporators (pointing away from the
condenser).
B.Apply a heat sink (wet cloth) to the filter drier.
C.With an open port, braze the filter drier into the
system using appropriate brazing material.
D.Evacuate the system per instructions in Section
5.2.
E.Recharge the system per instructions in Section
5.3.
26
ELECTRICAL AND MECHANICAL CONTROL SYSTEMS
NOTE
The wiring diagrams are located in Section 8.
SECTION 6
WARNING
6.1CONTROL BOARD
The control board uses a microprocessor to control all
timing and mode operations. It processes information from
the motor and spigot and sends signals to the compressor
and motor.
NOTE
The control board is designed for use at 1 15VAC or
208-240VAC. A connector and resistor determine the
voltage setting of the control board. Refer to Figure
6-1 for the location of the connector and resistor.
CONTROL BOARD TEST
The following test will show if the control board has proper
voltage.
1.Open the right side panel.
2.When the CLEAN-OFF-ON switch is in the ON
position, read voltage on the control board across
the L1 terminal and one of the neutral terminals
(P2, P3, P4 or P5). Voltage should be near line
voltage (115VAC on E112-LJ and 220VAC on
F112-LJ).
Remove Resistor for
use at 208-230V AC
V oltage Selector
Connector
Service to the machine must be completed by a
qualified electrician/refrigeration specialist.
Any tests or work done on the machine must be
done by a qualified technician. Service to the machine done by an unqualified person, could result in
serious personal injury.
6.2CONTACTORS
The compressor and drive motor contactors are mounted
behind the right panel.
A. CONTACTOR TESTS
The following test will show if the control board is sending
a voltage signal to the contactor.
1.Open the right side panel.
2.When the CLEAN-OFF-ON switch is in the ON
position, read voltage on the control board across
the L1 terminal and one of the neutral terminals
(P2, P3, P4 or P5). Voltage should be near line
voltage (115VAC on E112 and 220VAC on F112).
3.Read voltage on the control board across the L1
terminal and the COMPRESSOR CONTACTOR or
MOTOR CONTACTOR terminal during a freezing
cycle. Voltage should be 0V.
The following test will show if a contactor is receiving a
voltage signal from the control board.
1.Open the right side panel.
2.Read voltage across the coils of the contactor
during a freezing cycle. Voltage should be near
line voltage (115VAC on E112 and 220VAC on
F112). If there is no voltage reading, refer to
Section 7 Troubleshooting.
Jumper for Continuous
Drive Mode Selection
Figure 6-1 Control Board
Figure 6-2 Contactor
27
6.3DRIVE MOTOR
The drive motor is used to rotate the auger assembly. An
internal, normally closed, centrifugal switch starts the drive
motor. The motor has an internal thermal overload.
A. DRIVE MOTOR VOLTAGE TEST
The following test will show if the relay on the control board
is working properly and sending a voltage signal to the drive
motor.
1.Open the right side panel.
2.When the CLEAN-OFF-ON switch is in the ON
position, read voltage on the control board across
the L1 terminal and one of the neutral terminals
(P2, P3, P4 or P5). Voltage should be near line
voltage (115VAC on E112-LJ and 220VAC on
F112-LJ).
3.Read voltage across the L1 terminal and the
AUGER terminal. Voltage should be 0V.
B. DRIVE MOTOR REPLACEMENT
E112 MOTOR REMOVAL
1.Disconnect machine from electrical supply before
removing any panels for servicing.
2.Remove the back panel and the right side panel.
3.Remove the ground wire from the machine frame.
4.Loosen the motor cradle clamps at the front and
back of the motor.
5.Rotate the motor so that the electrical cover plate
can be removed. Remove the cover plate from the
back of the motor.
6.Identify (mark) wires and remove them from the
motor.
7.Remove the belt tension adjustment nut and
remove the belt.
8.Remove the two bolts from the bushing clamp at
the rear of the machine and pull the motor out
through the back of the machine.
Motor Cradle
Clamps
Belt T ension
Adjustment Nut
Figure 6-3 Drive Motor
28
Motor Cradle
Clamp
Electrical
Cover Plate
Mounting Bolts
Figure 6-4 Drive Motor
9.Remove the bolts that connect the motor to the
mounting plate.
10.Loosen the two allen head screws from the pulley.
11.Remove the pulley and key from the motor shaft.
E112 MOTOR INSTALLATION
1.Place the drive motor on the mounting plate and
install the four mounting bolts.
2.Place the pulley and key on the motor shaft.
NOTE
Do not tighten the pulley screws until after the belt
tension has been properly adjusted.
3.Install the motor and mounting plate in the machine
to the bushing clamp using the mounting bolts.
4.Install the belt and the tension bolt. Tighten the
tension bolt.
5.Test for proper belt tension by pressing firmly on
the belt. When the tension is properly adjusted,
the belt should depress approximately 3/8” (roughly
the width of the belt).
6.Using a straightedge, align the drive motor pulley
with the gearbox pulley. Tighten the two allen
head screws on the drive motor pulley.
7.Loosen the motor cradle clamps at the front and
back of the motor.
8.Rotate the motor so that the electrical cover plate
can be removed. Remove the cover plate from the
back of the motor
9.Install wiring according to the wiring diagram.
Install the electrical cover plate.
10.Tighten the motor cradle clamps.
11.Install back and side panels.
F112 MOTOR REMOVAL
1.Disconnect machine from electrical supply before
removing any panels for servicing.
2.Remove the back panel and the right side panel.
3.Remove the electrical cover plate from the back
of the motor.
4.Identify (mark) wires and remove them from the
motor.
5.Loosen the belt tension adjustment nut and remove
the belt.
6.Remove the motor mounting bolts.
7.Remove the motor through the back of the
machine.
8.Loosen the two allen head screws from the pulley.
9.Remove the pulley and key from the motor shaft.
F112 MOTOR INSTALLATION
1.Place the pulley and key on the motor shaft.
NOTE
Do not tighten the pulley screws until after the belt
tension has been properly adjusted.
2.Place the drive motor in position and install the
four mounting bolts.
3.Install the belt and tighten the tension bolt.
4.Test for proper belt tension by pressing firmly on
the belt. When the tension is properly adjusted,
the belt should depress approximately 3/8” (roughly
the width of the belt).
5.Using a straightedge, align the drive motor pulley
with the gearbox pulley. Tighten the two allen
head screws.
6.Install wiring according to wiring diagram. Install
electrical cover plate.
7.Install back and side panels.
6.4CAPACITORS
The compressor start and run capacitors are mounted
behind the right side panel. The capacitors for the drive
motor are mounted directly onto the motor body. The E112LJ has one drive motor capacitor. The F112-LJ has two drive
motor capacitors: a run capacitor and a start capacitor.
A. CAPACITOR TEST
1.Place the CLEAN-OFF-ON switch in the OFF
position.
2.Remove a lead from one of the capacitor terminals.
3.Using insulated pliers, discharge the capacitor by
connecting a 20K Ω 5W resistor across the
terminals.
NOTE
Discharge the capacitor even if there is a bleeder
resistor across the terminals. There may be an open
in the bleeder resistor preventing it from working
properly .
4.Disconnect the bleeder resistor from the circuit.
5.Measure capacitance across the terminals. The
results should be as follows:
Drive Motor Start231095500 MFD125 VA C
Drive Motor Run23107850 MFD370 VAC
Compressor Start23063272-86 MFD330 V AC
Compressor Run23063330 MFD370 VAC
6.Check the resistance across the capacitor
terminals. The reading should be close to 0 and will
rise slowly (as the meter charges the capacitor).
6.If the resistance stops increasing, there may be an
internal short in the capacitor.
7.Discharge the capacitor if the test needs to be
repeated.
B. CAPACITOR REPLACEMENT
1.Place the CLEAN-OFF-ON switch in the OFF
position.
2.Remove leads from the capacitor terminals.
3.Using insulated pliers, discharge the capacitor by
connecting a 20K Ω 5W resistor across the
terminals.
NOTE
Discharge the capacitor even if there is a bleeder
resistor across the terminals. There may be an open
in the bleeder resistor preventing it from working
properly .
4.Pull the capacitor out of its holder and replace.
5.Connect the leads to the terminals.
Figure 6-5 Compressor Capacitors
29
6.5GEARBOX
A. GEARBOX INSPECTION
Inspect the gearbox and listen for unusual noise. A grinding
sound generally indicates a bad gear.
B. GEARBOX REMOVAL
1.Disconnect machine from electrical supply before
removing any panels for servicing.
2.Remove the back panel and the side panel.
3.Remove protective shield from side of machine.
4.Remove the belts.
5.Remove the pulley by loosening the set screws.
6.Remove the three bolts holding the gearbox to the
barrel.
4.Remove the two bolts holding the gearbox to the
mounting bracket and remove the gear box through
the rear of the machine.
C. GEARBOX INSTALLATION
1.Place the gear box in position from the rear of the
machine. Fasten the three bolts through the gear
box to the rear of the barrel.
2.Fasten the gearbox to the mounting bracket using
the two bolts.
3.Mount the pulley on the gear box shaft and align
with the motor pulley, then tighten the allen head
screws.
4.Install the belt.
5.Press firmly on the belt.
6.When the tension is properly adjusted, the belt will
depress the approximate width of the belt with the
pressure of a finger.
7.If an adjustment is necessary, loosen the four
motor plate retaining nuts, adjust belt tension then
retighten the four nuts.
6.6CONDENSER FAN MOTOR (AIR-
COOLED ONLY)
A. FAN MOTOR REPLACEMENT
1.Disconnect machine from electrical supply before
removing any panels for servicing.
2.Remove the panels and the header panel as
noted below.
E112-LJ: Remove both side panels
F112-LJ: Remove the left side panel and rear panel
Figure 6.6 Fan Motor Replacement
3.Trace and disconnect the wires on the T1 and T2
terminals on the compressor contactor. The F112
has a black and white wire connected to the
contactor. The E112 has two black wires.
4.Remove the four screws on the fan motor bracket
and remove the bracket. Be careful to not damage
the fins on the condenser when removing the fan.
5.Loosen set screw on fan blade.
6.Remove the three bolts from the fan motor
mounting plate and remove the motor.
B. FAN MOTOR INSTALLATION
5.Route the wires to the compressor contactor.
6.Connect the wires to the contactor as follows:
F112-LJ: Connect black wire to the T1 terminal.
Connect white wire to the T2 terminal.
E112-LJ: Connect a black wire to the T1 terminal
and connect the other black wire to the T2 terminal.
It does not matter which wire is connected to which
terminal.
3.For F112-LJ only: Ensure the purple wire is
terminated. and the ensure red wire is terminated
with blue wire.
1.Attach motor to the mounting plate with the three
bolts.
2.Place fan blade on motor shaft. Make sure the
motor shaft does not extend past the hub of the
fan blade.
7.Install the fan motor bracket to the condenser.
8.Position the fan on the motor shaft so that the
blades are 3/8” from the fins on the condenser.
Tighten the set screw.
30
6.7SWITCHES
A. SPIGOT SWITCH
The spigot switch is a normally closed, held open switch.
When a spigot is pulled, the spigot switch sends a signal
to the control board to start the drive motor.
SPIGOT SWITCH TESTING - ELECTRICAL
1.Disconnect the switch from the circuit by
unplugging the connector.
2.Check resistance readings across the common
(COM) and normally closed (NC) terminals. When
the spigot is closed (not dispensing), the resistance
should show an open. When the spigot is opened
(during dispensing), the switch will close and the
resistance should be 0 ohms.
SPIGOT SWITCH REPLACEMENT
1.Remove the header panel.
2.Disconnect the connector from the switch and
remove the switch.
3.Install the replacement switch onto the spigot
assembly.
4.Attach the connector to the spigot switch.
5.Replace the header panel and secure with the two
Phillips head screws.
B. TORQUE SWITCH
The torque switch is a normally open switch. During the
freezing cycle, the product in the freezing cylinder increases consistency. As product consistency increases,
the stator bar rotates and moves the torque rod. When the
torque rod activates the torque switch, the product in the
freezing cylinder is at consistency.
TORQUE SWITCH TEST
1.Disconnect the switch from the circuit by
unplugging the connector.
2.Check resistance readings across the common
(COM) and normally open (NO) terminals. When
the switch is open, the resistance should show an
open. When the switch is closed, the resistance
should be 0 ohms.
TORQUE SWITCH REPLACEMENT
1.Remove the header panel.
2.Disconnect the connector from the switch and
remove the switch.
3.Install the replacement switch onto the torque
assembly.
4.Attach the connector to the torque switch.
5.Replace the header panel and secure with the two
Phillips head screws.
Normally Closed
Held Open
Spigot Switch
Figure 6-7 Spigot Switch
Normally Open
Torque Switch
Figure 6-8 Torque Switch
31
32
SECTION 7
TROUBLESHOOTING
7.1 LIGHT INDICATORS
The machine has two lights that will alert the user if a problem occurs: an ADD MIX light and a Diagnostic Light.
The ADD MIX light will flash to alert the operator to a low mix condition. It does so by monitoring the mix level in the
hopper. When the ADD MIX light is flashing, refill hopper immediately.
The Diagnostic Light will flash if an error occurs. Refer to the chart below for details.
IndicationOnOne BlinkTwo BlinksThree Blinks
Conditions
Self
Correction
Defrost Mode
N/AN/A
Torque is not
met after 22
minutes
Drive current is not sensed
The machine attempts to sense drive
current with a 3 second pre-stir. If current
is sensed, the machine will return to
normal operation. If c urrent is not sensed,
the machine will wait 7 minutes and t ry to
sense current with another 3 s econd pre-
stir. After the third attempt, the
compressor will run on timers.
Machine left in clean
mode for over 20
minutes
N/A
Operation
Corrective
Action
Every 7 minutes
the auger will
run for 90
seconds.
End Defrost
Mode by turning
Clean/Off/On
switch OFF
then turning it
back ON.
Opening the
spigot will also
end Defrost
Mode.
Timers or until
torque switch
remains closed
for 3 seconds.
Check for
product in the
hopper, check if
the condenser
is dirty, check
the refrigeration
system.
7.2 TROUBLESHOOTING - MACHINE
PROBLEM
Machine does not
run.
Machine will not
shut off before 22
minute Compressor
Time Ou t Mode.
Product is too firm.
1 Power to machine is off.1 Supply power to machine.
2 Blown fuse or tripped circuit .2 Replace or reset.
3 Freeze-up (auger will not turn).3 Turn Clean/Off/On switc h Off for 15 minutes,
4 Front door not in place.4 Assemble front door in place.
1 Drive belt failure.1 Replace drive belt.
2 Consistency temperature setting is too
firm.
3 Refrigeration problem.3 Check syst em. (Call distributor for s ervice)
1 Consistency temperature setting is too
firm.
POSSIBLE CAUSEREMEDY
TimersOff
Check that there is power going to the
contactor, check for power leaving the
contactor, check for power at the motor.
then res tart.
2 Turn Consistency Adjus tment knob counter-
clockwise.
1 Turn Consistency Adjus tment knob counter-
clockwise.
Turn Clean/Off/On
switch OFF then turn
it back ON.
33
7.2 TROUBLESHOOTING - MACHINE - CONTINUED
PROBLEM
Product is too thin.
Product doe s not
dispense.
Drive belt slipping
or sque al i ng.
Rear auge r seal
lea ks.
Front door leaks.
POSSIBLE CAUSEREMEDY
1 No vent space for free flow of cooling
air.
2 Condenser is dirty.2 Clean. (See Section 3)
3 Consistency setting too soft.3 Turn Cons istency Adjustment k nob c lockwise.
4 Auger is assembled incorrectly .4Remove mix , clean, reassemble, sanitize and
5 Auto Fill Pump not operating.5See Auto Fill Troubleshooting sec tion.
6 Refrigeration problem.6 Check system. (Call distributor for service)
1 No mix in hopper.1 See Auto Fill Troubleshooting section.
2 Drive motor overload tripped.2Wait for automatic reset. (If condition
3 Drive belt failure.3 Replace drive belt.
4 Freeze-up (Auger will not turn).4Turn Cl ean/Off/On switch Off for 15 minutes,
1 Worn drive belt.1 Replace drive belt.
2 Freeze-up (Auger will not turn).2Turn Cl ean/Off/On switch Off for 15 minutes,
3 Not tensioned properly.3 Adjust belt tension
1 Out side surface of rear auger seal is
lubric ated.
2 Rear seal missing or dam aged.2 Check or repl ace.
3 Seal o-ring missing, damaged or
installed incorrectly.
4 W orn or s cratched auger shaft.4 Replace auger shaft.
1 Front door k nobs are loose.1 Tighten knobs.
2 Spigot parts are not lubricated.2 See Section 3.
3 Chipped or worn spigot o-rings.3 Replac e o-rings.
4 O-rings or spigot ins talled wrong.4 Remove s pigot and check o-ring.
5 Inner spigot hole in front door nicked or
sc ratched.
1 A minimum of 6" of ai r space on both sides (the
E112 requires 3"). (See Section 2)
freeze down.
cont inues, call distributor for service.)
then res tart.
then res tart.
1 Clean lubricant from outside of rear seal,
lubricate inside of seal and reinstall.
3 Check. or replace.
5 Replace front door.
7.3 TROUBLESHOOTING - AUTO FILL SYSTEM
PROBLEM
Pump d oes not
operate.
Syrup
concentration
incorrect
1 Low water pressure.1 Verify that there is adequate water pressure at
2 Restriction or plugged auto fill system. 2 Flush and sanitize the pump and tubing.
3 Empty BIB3 Replace BIB
1 BIB connector is not connected to the
BIB properly.
2 Leak at the connections or in the
tubing.
3 Air in the BIB s y rup container.3 Remove the air from the BIB syrup container.
4 Pump is clogged with debris or
particulates.
POSSIBLE CAUSE
REMEDY
the inlet fitting (30-50 psi).
1 Check connection and reconnect if necessary.
2 Look for leaks at the c onnections and bubbles
in the tubing. Tighten clamps and replace
tubing if necessary.
4 Remove syrup valves and inspect for debris or
improper closing that would interfere with
operation.
34
SECTION 8
REPLACEMENT PARTS
8.1 DECALS, LUBRICATION, PANELS & LEGS
PartDescriptionE112-LJF112-LJ
208135Brush - 4" X 8" X 16" (Barrel)11
208380Brush - 1/4" X 3" X 14"11
208401Brush - 1" X 3" X 10"11
232091Cap - Protective (Gray) - #490716 Leg1
236054Card - Cleaning Auto Fill Pump Kit11