NSF AC10-PC User manual

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AC10-PC
Refrigerated Liquid
Dis
p
ensers
Service Manual
D-19-030RevA

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Model Products Function Button Panels Weight Dimensions Capacity
AC10-PC 1 portion control 1, 3, 4, 5 60 lbs 17¾ x 9½ x 24 1 x 2½ gal (1 x 10 L)
NOTES: All Dimensions are in inches, with standard 1” legs installed.
Power Supply – all dispensers: 120 VAC, 1 ph, 60 Hz, 3 amp
A.C. Dispensing Equipment Inc.
100 Dispensing Way
Sackville, Nova Scotia Canada
B4C 4H2
Technical Assistance Center:
1-888-777-9990 or 1-902-865-9602
OR [email protected]

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Table of Contents
Dispenser Components 2
Specifications 2
Safety Precautions 4
Inspection for Damage 4
Reshipment 4
Uncrating the Dispenser 5
Electrical Requirements 5
Servicing – Electrical 5
Servicing – Refrigeration 5
Installation of the Dispenser 5
1. OPERATIONS
Clean Before First Use 6
Starting the Dispenser 6
Loading the Dispenser 6
Loading Product Bags 7
To Remove an Empty Product Bag or Tank 8
To Dispense 8
Button Panels 8
Red Indicator Light 9
LCD Display 9
2. CLEANING
Recommended Cleaning Schedule 10
Cleaning – Catch Tray 10
Cleaning – Valve Area 10
Cleaning – Exterior of Dispenser 10
Cleaning – Dispensing Valve Area 11
Cleaning – Dispensing Valve Assembly 12
Cleaning – Product Tanks & Caps 13
Cleaning – Product Case 13
Cleaning – Refrigerated Compartment 13
Cleaning – Condenser 13
3. REFRIGERATION SYSTEM 14
Temperature Control Adjustment 14
Dispenser Running Too Cold 15
Dispenser Running Too Warm 15
4. MAINTENANCE
To Reset the Power on the Dispenser 16
General Maintenance 16
5. TECHNICAL SERVICE
Level Dispenser 17
Remove Valve Cover 17
Remove Dispenser Door 17
Remove & Replace LCD Display 18
Remove & Replace Valve 19
Remove & Replace Valve Thermistor 19
Remove & Replace Display Thermistor 20
Remove & Replace Circuit Board 20
Remove & Replace Compressor Relay 21
Remove & Replace Transformer 21
Remove & Replace Circuit Breaker 22
Remove & Replace ON/OFF Switch 22
Remove & Replace Solenoid 23
Remove & Replace Condenser Fan 24
Remove Back Panel 24
Replace Electrical Cord 24
6. CHECKS AND ADJUSTMENTS
AC Outlet for 120 VAC 25
AC 120 VAC input to Transformer 25
AC 24/12 VAC output to PCB from Transformer 25
DC 2.8 Æ3.8 VDC input of Valve Thermistor 26
Resistance of Valve Thermistor 26
DC 2.8 Æ3.8 VDC input of Display Thermistor 26
Resistance of Display Thermistor 26
38 DVC output to Solenoid 27
38 DVC output to the Compressor Relay 27
120 VAC input to Compressor Back 27
Proximity Switch Continuity Check 28
Quantity Volume Checks 28
To Adjust Dispense Amounts 28
Displayed Temperature Offset Check 29
Displayed Temperature Adjustment 29
Gas Pressure Check 29
7. DIAGRAMS
Wiring Diagram 30
Electrical System 31
Circuit Board – labeled picture 32
General Assembly 33
8. PARTS LIST 34
9. TROUBLESHOOTING
Dispenser is not level 35
No power at the plug 35
Dispenser will not turn on 35
Dispenser will not dispense product 35
Dispenser is not dispensing proper amount
of product 36
Valve is sticky 36
Valve door is broken 36
Dispenser is warm on exterior 37
Dispenser is warm on interior 37
Dispenser is too cold 37
Frost buildup in refrigeration compartment 37
Dispenser is leaking product 38
LCD does not come on 38
10. WARRANTY 39
Document # D-19-030 RevA

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AC10-PC LIQUID DISPENSERS - OPERATIONS
The AC10-PC SureShot Dispensing Systems® Liquid Dispensers provide refrigerated liquids such as
cream, whole milk, skim milk, in automatically controlled portions. Product selections are made using touch
buttons on the front panel. Each button is pre-set independently at our factory to dispense a specified amount
of refrigerated product in accurate, portion-controlled quantities to your company’s specifications. The product
is stored in a sanitary, refrigerated compartment within the dispenser.
The AC10-PC model will dispense a dairy product in up to five different sizes from touch buttons on
the front of the dispenser.
Operating the dispenser is a simple two-step process:
1. Place cup under the product delivery tube.
2. Press button for the desired quantity of dairy product.
Safety Precautions
• Always plug the dispenser into an approved electrical outlet.
• The dispenser includes a microcontroller and must be operated on
grounded electrical wiring at all times.
• Unplug the dispenser from its electrical source before servicing.
• Do not immerse the dispenser in water.
• Observe all safety precautions with this dispenser that you would
with any electrical appliance.
INSPECTION FOR DAMAGE
When you receive the dispenser, inspect the exterior of the shipping container for damage. Note any
damage in detail.
Uncrate the dispenser at once (see instructions below). Examine the dispenser for damage. Report any
damage to the transportation company immediately. File a claim for damages promptly.
Your immediate inspection protects you against loss since A. C. Dispensing Equipment Inc. is not
responsible for damages incurred during shipment.
RESHIPMENT
Packaging for re-shipment is done in the reverse order of uncrating. If packaging is not available, it can be
purchased locally, or from our factory by request. Any damage occurring in transit of the returned goods
caused by improper packaging is not considered a defect covered by Warranty.
NOTE: The Warranty will be null and void if the dispenser is serviced by unqualified personnel. Service under
Warranty must be approved and dispatched by A. C. Dispensing Equipment Inc. before the service technician
is dispatched. Contact the SureShot Dispensing Systems® Technical Assistance Center at 1-888-777-9990 or
1-902-865-9602 for approval. The customer is responsible for all costs not approved by A. C. Dispensing
Equipment Inc.

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UNCRATING THE DISPENSER
CAUTION: Always lift the dispenser from the bottom. Do not lift the dispenser by the door.
To uncrate:
1. Make sure the box is positioned with the arrow pointing upward.
2. Cut the packing straps at the top of the box.
3. Lift the top tray off the box.
4. Lift the center sleeve off the box.
5. Remove the protective corner inserts from the bottom tray.
6. Lift the dispenser by its bottom out of the tray. Always use two people to lift the dispenser.
7. Remove the plastic protective covering from the stainless steel exterior of the dispenser,
by peeling it off. To peel, hold the dispenser firmly at the top and peel from top to bottom.
8. Prior to use, read the Operations Manual. Store it for future use.
NOTE: The carton top, sleeve, and bottom tray may be stored for future shipping.
ELECTRICAL REQUIREMENTS
Be sure the current at the power source receptacle is: 120 VAC, single phase, 3 Amp, 60 Hz.
The power cord is furnished with a UL-approved 3-prong attachment plug. This plug is designed to fit a
receptacle with provisions for a grounding stud. The dispenser includes a microcontroller and must be
operated on grounded electrical wiring at all times. Failure to do so will void the Warranty.
SERVICING - ELECTRICAL
Electrical servicing must be carried out by a qualified technician. The Warranty will be null and void if the
dispenser is serviced by unqualified personnel. If you need assistance, call the SureShot Dispensing
Systems® Technical Assistance Center at 1-888-777-9990 or 1-902-865-9602.
SERVICING - REFRIGERATION
Any servicing of the refrigeration system must be carried out by a qualified technician. The Warranty will be
null and void if the refrigeration system is serviced by unqualified personnel. If you need assistance, call the
SureShot Dispensing Systems® Technical Assistance Center at 1-888-777-9990 or 1-902-865-9602.
INSTALLATION AND LOCATION OF THE DISPENSER
1. Location of Dispenser:
•Place the dispenser where it will best serve your operation.
•Counters, platforms, or shelves should be strong enough to support the dispenser and full
containers of product. The empty AC10-PC dispenser weighs 60 pounds.
•Place the dispenser at the appropriate serving height so that people drawing product from the
dispenser can operate the buttons as well as easily place and remove cups.
•Leave clear space around the dispenser, approximately 1 inch (2.5 cm) on all sides.
•Do not place the dispenser too close to a source of heat or moisture. Allow a minimum 1 inch
(2.5 cm) airspace between machines at all times. The performance and efficiency of the
refrigeration system will be reduced if the dispenser is placed too close to a heat-generating
machine, such as a coffeemaker.
•Do not block the vents at the top rear of the dispenser. The vents must be free and open to
ensure proper operation of the ventilation system and to prevent over-heating and damage to the
system.
•The dispenser must be placed on a level surface or leveled by adjusting the legs. Not all
dispensers have adjustable legs. The dispenser must be level, left to right and front to back, to
dispense accurate quantities and to ensure proper functioning of the refrigeration system.
•Do not remove the legs or rubber feet from the dispenser or allow the dispenser to sit flat on the
counter. Airflow and circulation under the machine are essential for the proper operation of the
refrigeration system. Make sure the legs at the four corners of the bottom of the dispenser are in
place. If one has loosened during shipping, re-tighten it. Some dispenser models have
adjustable legs and these legs are secure even though they may appear to be loose. Removal of
the legs automatically voids the Warranty.

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1. OPERATIONS
CLEAN BEFORE FIRST USE OF THE DISPENSER
•Make sure you clean the dispenser thoroughly. See Cleaning Instructions for the Exterior of the
Dispenser and the Dispenser Components on pages 10 - 13.
CAUTION: Before starting the dispenser, make certain that all Installation instructions have been
followed and that the dispenser has been sitting upright for a minimum of 3 hours.
STARTING THE DISPENSER
To start the dispenser:
1. Plug the power cord into the proper electrical outlet.
2. Turn the Power Switch “ON”. The power switch is located at the lower left of the dispenser.
Make sure the dispenser door is closed.
Push one of the product buttons on the front panel and listen to hear the valve open and close. This
confirms that the dispenser is operating. The button panel on the front of the dispenser may have a
power LED which glows green when the dispenser is on.
3. Allow the dispenser to run empty for one hour to achieve a cold temperature before placing product
containers in the dispenser. The temperature control has been pre-set at the factory.
You can feel the cold temperature by placing your hand on the top or back wall of the refrigeration
compartment.
4. If the dispenser does not appear to be getting cold, check to make sure that it is plugged in and that
the power source is active. If the dispenser still does not operate, immediately call the SureShot
Dispensing Systems® Technical Assistance Center Technical Assistance Center at 1-888-777-9990 or
1-902-865-9602.
LOADING THE DISPENSER
•Ensure the dispenser has achieved proper operating temperature by running empty for one hour
before loading product to be dispensed.
•Product being placed inside the refrigeration compartment should be cooler than 41 ºF or 5 ºC.
•The product is supplied in sanitary pre-packaged bags with attached delivery tubes. The bags are
placed in product cases that are placed within the refrigeration compartment.
.

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LOADING: Product Bags
NOTE: Product may be loaded in bags, bags in boxes, or in tanks.
•All product tanks must be cleaned properly, sanitized with an approved sanitizing solution
according to the manufacturer’s specifications, and air-dried before they are loaded into
dispensers. Follow cleaning instructions on page 13.
•Tanks are to be loaded into the dispenser with the power switch ON.
•Tanks should be filled with chilled product before they are loaded
into the dispenser. Fill to the FULL level with product chilled to 41 °F
(5 °C) or less.
•Sanitize your hands or wear clean gloves to install product tank,
tank cover, and delivery tube.
Sanitize your hands or wear clean gloves to load the dispenser.
1. Place the bagged product in the product case provided with
the dispenser. Make sure the bag fitment is positioned so
the product delivery tube is inserted through the opening at
the bottom front of the case and is perpendicular to the
dispensing valve.
2. Open the door to the refrigerated product compartment.
3. Open the valve door by unscrewing the black knob in a
counter-clockwise motion to loosen the screw.
4. Insert the product case into the refrigerated product
compartment, with the tube facing out to the front.
5. Make sure there are no kinks or twists in the product delivery
tube.
6. Remove the polyethylene film covering the product delivery
tube.
7. Align the product delivery tube in the central vertical groove of
the valve block.
Do not pull or stretch the product delivery tube.
8. Close the valve door, making sure the product delivery tube is
in the vertical groove and is not kinked or pinched.
9. While holding the valve door closed with one hand, tighten
the knob-screw in a clockwise motion until the door is snug.
Do not over- tighten the screw.
10. Close the refrigerated product compartment door.
11. Squeeze the product delivery tube just below the valve with
all fingertips.
12. While squeezing the tube, press the “small” product quantity
button on the front door button panel once only. This will
cause the valve to operate once and relieve pressure in the
tube.
13. Use sharp scissors or a sharp knife to carefully cut the
product delivery tube at a 45° angle at a maximum length of
5/8” from the bottom of the valve block.
Discard the cut portion of the tube.
The dispenser is ready for use.
Loading product bag
Tube alignment
Cut tube

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To Remove an Empty Product Bag or Tank:
1. Place a container under the dispensing valve to catch any residual product and to prevent spills.
2. Open the valve door by unscrewing the knob in a counter-clockwise motion.
3. Remove the empty bag or tank while pinching the product delivery tube so that it does not drip.
Discard the empty product bag.
4. EMPTY TANK: Wash, rinse, sanitize and air-dry the product tank, using cleaning instructions on
page 13.
OPERATING INSTRUCTIONS – AC10-PC Dispensers
•Make certain all initial Set-Up instructions have been followed before operating the
dispenser.
•The product and volume to be dispensed are selected by pressing buttons on the Button
Panel on the front door of the dispenser.
•Select buttons as required.
To Dispense Product:
1. Place cup under product delivery tube.
2. Press button to select product quantity to be dispensed.
BUTTON PANEL
Select the size button for the quantity to be dispensed.
One Size
Three Sizes: 1 2 3
small medium large
Four Sizes: Small Medium Large X-Large
Five Buttons:
Four Sizes: TOP: Small Medium Large X-Large
BOTTOM: Modifier Button
1. Press Modifier Button to dispense quantities for modifier amounts
2. Press top row button to select size of product dispensed

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RED INDICATOR LIGHT
Some dispensers have a 5-button panel. The bottom row button is a Modifier Button for dispensing
quantities for specialty Modifier amounts. The Modifier Button has a Red Indicator Light (red LED) at the
top.
The Indicator Light will light for three seconds after the Modifier Button is pressed, to indicate that the size
selected will be dispensed in Modifier amounts.
The Indicator Light will flash to indicate the Modifier Button is in program mode (see page 28).
LCD DISPLAY – AC10-PC Dispensers
Operation Temperature
SureShot Dispensing Systems ® liquid dispensers use a Liquid Crystal Display in the upper left corner of
the dispenser door to show the current dispenser function.
Note: not all dispensers have an LCD.
Information is displayed in two parts:
Operation – shows the current operating function of the dispenser
Temperature – shows the internal temperature of the refrigeration compartment. (NOTE: this is the
compartment temperature in Celsius or Fahrenheit degrees, not the product temperature.)
Temperature:
Continuously shows the internal temperature status of the refrigeration compartment in Celsius or
Fahrenheit degrees, at your company’s specifications. The display changes every 3 seconds.
Examples: 37 F 37 degrees Fahrenheit
(blank) refrigeration system off
refrigeration system on
DEF defrost cycle in progress
Operation:
Press the button to Select Product. The LCD shows the operational status of that product tank or case:
Display Operational Status
SureShot 37 F indicates the dispenser is ready to dispense
and the internal compartment temperature is 37 °Fahrenheit
TR1 If the valve door is opened and closed, the dispenser resets the product
level for the case or tank dispensed by that valve. This display shows that
the level has been reset to Full for the tank/case.
Small
Medium
Large
Extra Large
Indicates the size selected, if Size button is pressed.
The LCD displays the size to be dispensed to your company’s specification.
Not all dispensers have the Extra Large option.
NOTES:
•Display returns to SureShot, the default display, after 3 seconds.
SureShot 37 F

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2. CLEANING
Cleaning of tanks is a 4-stage process: Rinse, wash, rinse, sanitize.
All 4 stages must be followed, in sequence, to complete cleaning.
RECOMMENDED CLEANING SCHEDULE:
DISPENSER PART FREQUENCY SEE PAGES
Catch Tray Daily 10
Exterior Daily 10
Valve area Daily 10
Exterior Daily 10
Dispensing valves - PC Once a month, or as needed 11, 12
Product Case Every time valve is cleaned, or as required 13
Refrigerated Product Compartment Every time a new product bag or tank is loaded 13
Condenser Every 6 months 13
CLEANING: Catch Tray
Note: Not all dispensers have a catch tray.
For some dispensers, the catch tray is a separate accessory placed at the front of the dispenser.
For some dispensers, the catch tray is attached at the front and must be removed for cleaning,
by lifting it up and off.
1. Rinse the tray with lukewarm potable water.
2. Place the tray in a hot water wash at a minimum water temperature of 140 ºF or 60 ºC.
•A good quality general cleaner should be added to the hot wash water at the concentrations
recommended by the detergent supplier.
3. Wash thoroughly, using a bottle brush to reach all the corners and crevices.
•If a dishwasher is available at the location, this step may be carried out by placing the tray in
the dishwasher and washing on the pot cycle.
4. After washing, rinse the tray well with lukewarm potable water.
5. Turn the tray upside down. Air dry.
CLEANING: Valve Area
1. Turn the dispenser OFF.
2. Open the door to the refrigerated product compartment.
3. Thoroughly wipe the area around the valve with a warm, soapy cloth or a sanitized handiwipe to
remove any splashes or product build-up.
•Keep the valve area clean for proper sanitation and to ensure proper product delivery.
•If the valve area is not clean, the valve may stick and not deliver product accurately.
•Clean the valve assembly once a week, when the tank is empty.
•Wipe the valve area clean daily.
4. Wipe the area with a damp cloth to remove any soap residue.
5. Air dry thoroughly.
6. Close door to refrigerated product compartment.
7. Turn the dispenser ON.
CLEANING: Exterior of Dispenser
NOTE: Do not use any abrasive materials.
1. Use a soft, dry cloth to wipe down the exterior surfaces of the dispenser to maintain the
lustre of the stainless steel finish.
2. Wash the stainless steel exterior surfaces of the dispenser with warm, soapy water.
3. Rinse with warm clear water.
•If the water is hard, wipe the dispenser dry with a soft cloth to prevent water spotting.
•Stainless steel polish may be used if it is sprayed on a cloth before the cloth is used to wipe
down the exterior surfaces of the dispenser.
•The front of the dispenser should be wiped clean daily.
Do not spray any liquid, such as a cleaner, in or around the valve area.
Liquid could damage electrical components located behind the valve.