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can drink & can/bottle  


Vending machine
Service Manual

Models 3172, 3172A, 3196 




This manual contains instructions, service and installation guidelines for the Can Drink or Can/Bottle Satellite Vending Machine.  Read this manual thoroughly to become familiar with the features and functions of this unit. The initial set-up of a vending machine is a very important step of insuring that the equipment operates in a trouble-free manner. Following the instructions during the initial installation of the machine will avoid service problems and minimize set-up time.  This model is a six (6) select, can or bottle vending machine that operates on the "first-in, first-out" vending principle for all selections.  


The SATELLITE VENDING MACHINE uses the electronics and control systems of the host vending machine for all vend functions, credit accumulation, and pricing. 

Each machine is identified by a model and a serial number given on the Serial Number Plate attached to the inside or back of the vending machine. All inquires and correspondence pertaining to this vending machine must reference the model and serial numbers. 


Should you have any questions pertaining to the information in the manual, replacement parts or the operation of the vending machine you should contact your local distributor or: 


165 North 10th Street 

Waukee, IA  50263 

PHONE:      1-515-274-3641 


PARTS FAX: 1-515-274-5775 

    SALES FAX: 1-515-274-0390  




This vending machine was thoroughly inspected before leaving the factory and the delivering carrier has accepted this vending machine as their responsibility. Any damage or irregularities should be noted at the time of delivery and reported to the carrier. Request a written inspection report from the claims inspector to file any claim for damage. File the claim with the carrier (not the manufacturer) within 15 days after receipt of the machine. 

Carefully remove the outside packing material in a manner not to damage the finish or exterior of the machine. Inspect the machine for concealed shipping damage. Report any damage hidden by the shipping material directly to the delivering carrier on a Hidden Damage Report. 


Remove the "Knock-A-Way" support by placing a 2x4 under the vending machine, inserting a screwdriver or prying tool into the groove of the Knock-A-Way and splitting it in two as shown in Figure 1. Turn the leveling screws in as far as possible. 


Removing Knock Away Supports for satellite vending machine.  

Figure 1. Removing Knock-Away Supports




Consult local, state and federal codes and regulations before installation of the vending machine.  To minimize installation time and to avoid service problems due to improper installation, follow the instructions outlined in this manual. 

Position the vending machine in its place of operation no further than six feet (6 ft) from the power outlet or receptacle and check that the door will open fully without interference. Leave at least four inches of space between the back of the machine and any wall or obstruction for proper air circulation. 


Do not block the ventilating screens in front or in the rear of the vending machine. Always allow free ventilation behind a bank installation, so that exhaust air is not trapped. Failure to do so could result in a refrigeration failure. 

Level the vending machine, making sure all levelers are touching the floor. The vending machine must be level for proper operation. If it is properly leveled, it should not "rock" or "teeter" on any of the levelers. When the vending machine is level, the door can be opened to any position and not move by itself. Try the door half closed, straight out and in a wide open position before deciding that the machine is level. 

Remove all shipping brackets, tape and inner packing material from the vending machine. Operating the vending machine without removing the tape and packing material could result in damage to the vending machine. 

1. Grounding (Earthing) & Electrical

Refer to the Safety Manual and Installation Guidelines (P/N 4206816) that shipped in the service package with your machine. 

Prior to connecting the equipment, the integrity of the main electrical supply must be checked for correct polarity, presence of ground (earth) and correct voltage. It is recommended that these checks be repeated at 6-month intervals with the routine safety electrical testing of the equipment itself. 

To correct negative voltage, amperage, polarities, or ground (earth) checks, consult a licensed electrician. 

For proper operation of any equipment utilizing electronically controlled components, the equipment should be placed on an isolated or dedicated noise free circuit, properly polarized and grounded. Refer to the Electrical Specifications on this sheet to determine circuit amperage and protection. 


Do not use extension cords.


2. Parts Checklist

Find the service package envelope inside the SATELLITE VENDING MACHINE on the second shelf near the hopper. Please remove it and verify that it contains the following parts: 

      Screws for umbilical cord flat bracket. 

      Wire ties. 

      Tie bracket and mounting screws. 

If so equipped, also verify that you have the optional Filler (rectangular shaped plastic) attached on the backside of the inner door. It might be needed if vending 16.9 oz. water bottles. 

3. Tools Needed

      Flat Head and Phillips Head screwdrivers. 

      Wire Cutter. 


Position the SATELLITE VENDING MACHINE so that it is on the right side of the host vending machine. Refer to Figure 2. Swing doors open and check for clearance. 

Vending Machine Satellite located on right side of host vending machine.  

Figure 2. SATELLITE VENDING MACHINE located on right side of host


5. Locate Harness Ends

Turn off the host vending machine and unplug it from its power source. 

Look for the extra 12-pin connector end of the motor harness inside the host vending machine. The motor harness is usually hanging on the bottom right, or inserted through a hole on the second shelf, or laying on the second shelf. Refer to examples shown on Figure 3. Look for the MDB Power Harness 2-pin connector near the 12-pin connector. Have both the 12-pin connector and the 2-pin connector ready for the umbilical cord. 

 Typical 12-Pin Motor Wire Harness Locations for Satellite Vending machine  

Figure 3. Typical 12-Pin Motor Wire Harness Locations



6. Connect Umbilical Cord

Remove the hole cover on the back of the host cabinet. Insert the SATELLITE VENDING MACHINE umbilical cord through the hole. Secure the bracket with screws provided. See Figure 4.  Connect the SATELLITE VENDING MACHINE umbilical cord to the 2-pin connector of MDB Power Harness and to the 12-pin motor harness. See Figure 5.  Coil up wire harness and tuck away from any moving parts. Secure with wire ties. See Figure 6. Use wire cutter to cut off excess plastic from wire tie. 


Remove hole cover, insert umbilical cord. 

Figure 4. Remove Hole Cover.
Insert Umbilical Cord


Connect Satellite Vending Machine Umbilical Cord  

Figure 5. Connect SATELLITE VENDING MACHINE Umbilical Cord


7. Power Up

Connect both the host vending machine and the SATELLITE VENDING MACHINE into their electrical power source. Refer to host vending machine manual for grounding and electrical power requirements. 

Turn ON the host vending machine. The host vending machine controller will automatically recognize the motors on the SATELLITE VENDING MACHINE. 


Tuck Away Wire Harness instructions for satellite vending machine.  

Figure 6. Tuck Away Wire Harness


8. Load Live Display

Rear View of Can/Bottle Live Display for satellite vending machine. 

Figure 7. Rear View
of Can/Bottle Live Display


Rear View of Can Drink Live Display for 6 select. satellite vending machine.  

Figure 8. Rear View
of Can Drink Live Display


9. Set Prices

Set prices for selections H1 through H6 in the same manner you would set prices for existing selections. Refer to the host vending machine for instructions on programming prices. 


10. Load Products

Important Suggestion 

Load the front rack with products that sell faster. When loading, fill the rear selections first. This method makes it easier to load the rack. 

1.   Products featured in front door Live Display must match the product being loaded. 

2.   Funnel slides must be kept clean. Refer to Figure 9 for part names, locations, and product orientation. 

3.   Product container bottoms must face towards the center of the rack as shown. Refer to Figure 10. 

4.   Do not store bottles in "spare" space of the cabinet. The refrigeration unit could be damaged. 

5.   A loading chart has been provided on the inner door to make it easier to keep track of what types of products have been loaded into the SATELLITE VENDING MACHINE. Use a dry erase marker to avoid making a permanent mark. 

6.   If refilling with the same product size into the same column, then load products into the columns. Skip steps 7 through 11. 

7.   If loading for the first time, changing a column to a different product size, or to reset product cradle (motor) to correct position, then load one row of products in each column and test vend each column using real money. 

8.   Add five (5) rows of products in each column to check product spacing. Products should have not more than ¼ to ½ inches of free space at the front or back of the columns as shown on Figure 10 on page 1. Adjust the back spacer, latch striker or gate assembly to achieve the required dimension. The Vend Rack has been factory set for most 20-oz. bottles or 12-oz. cans. If vending 16.9-oz. water bottles remove Filler (4211816) from the back of the inner door and install it in the Vend Rack. Follow instructions on Filler decal. 

9.   If product spacing is correct, then test vend each column using real money. Load the columns to full capacity. 


Do not load dented or damaged cans or bottles in the columns. Possible jams could occur.


To adjust the back spacer: 

Lift the back spacer and reposition it in the adjustment slots. Use notch markers as reference points to align it vertically. See Figure 10 on page 1. 


To adjust the latch striker and gate assembly: 

Pull and lift up on the lower end of gate assembly (or latch striker). Use a small screwdriver as a wedge to gently pry the dimple away from the slot opening. See Figure 10 on page 1. Reposition them in the adjustment slots. Use notch markers as reference points to align it vertically. 

Vending Machine Vend Rack for satellite vending machine.  

Figure 9. Vend Rack


The vend rack has been factory set for most 20-oz bottles or 12-oz cans.

Vending Machine Column Depth for satellite vending machine. 

Figure 10. Column Depth



11. Test Vend

Close host vending machine door and SATELLITE VENDING MACHINE door. Test vend both vending machines for proper operation. Use real money to simulate actual vend conditions. 


12. Install Tie Bracket


Failure to install the Tie Bracket in strict accordance with the following procedure may create an unintentional tipping or hazard. All installation and service work must be done by a qualified service technician. 


Attach the SATELLITE VENDING MACHINE to the host vending machine as shown on Figure 11. If attaching on the left side of the host vending machine, it might be necessary to remove the anti-cheat upper bracket and use the other Tie Plate. Hook the Tie Plate furnished over the lip of the SATELLITE VENDING MACHINE and host vending machine. Secure with screws provided.

Vending Machine Tie Bracket 

Figure 11. Tie Bracket




q      All shipping brackets, packing material and tape have been removed. 

q      Make sure the vending machine is level from left to right and front to back.  

q      The vending machine is plugged directly into a live dedicated outlet.  


Extension cords cause problems - Do not use extension cords.  

q      The dedicated outlet is polarized and grounded.  

q      All vend prices have been set correctly on the host vending machine. Refer to host vending machine service manual.  

q      The SATELLITE VENDING MACHINE has been properly loaded and all items in each selection correspond to the display product and vend price. Refer to Load Products section on page 1.  

q      The machine has at least 4" of space behind it.  

q      The vending machine door is closed tightly and locked.  




A drop (vibration) sensor on the delivery chute is your assurance that a product has been vended after a selection is made. 

The drop sensor is factory calibrated and should not need adjustment. The sensor indicator light (located on the sensor board below the adjustment screw) will blink when a product hits the delivery chute. See Figure 12. If the light does not blink on impact, then an adjustment should be made. 


 Drop Sensor Adjustment & Thermostat instructions for satellite vending machine. 

Figure 12. Drop Sensor Adjustment & Thermostat



Drop Sensor Adjustment

1.      Locate the sensor adjustment screw on the Drop Sensor Board. See Figure 12. 

2.      Use a small flat head screwdriver to slowly turn the adjustment screw clockwise (increase sensitivity) and stop when the indicator light comes on. 

3.      Slowly turn the adjustment screw counterclockwise (decrease sensitivity) and stop when the indicator light goes out. Continue to turn the adjustment screw counterclockwise three (3) additional turns. Test the sensor for proper operation by tapping the delivery chute. The indicator light should blink when the chute is tapped. 

4.      Close the door and perform several test vends. 

5.      If vending special products, the drop sensor may need the following additional adjustments: 

§      If machine is sending more than one product per vend request, open the door and turn the adjustment screw clockwise ¼ turn to increase sensitivity. 

§       If machine fails to vend product upon vend request, turn adjustment screw counterclockwise ¼ turn (to decrease sensitivity). 




When a can/bottle selection is made at the host vending machine, then 24VDC is sent from the host controller to the SATELLITE VENDING MACHINE vend motor. The vend motor rotates the product cradle and lets the product drop off the cradle. As the can or bottle drops onto the product delivery chute, the impact or vibration allows the drop sensor to send a low voltage signal to the drop sensor board indicating that a product has been vended. The drop sensor board relays the information to the host control board. After receiving the drop sensor signal, the host control board will recognize how the machine is programmed and responds accordingly. Refer to host vending machine service manual for controller and programming information. 


Some host vending machines will require resetting. Refer to host vending machine service manual for additional information.  




Refrigeration Controls

The thermostat that controls the temperature has been preset at the factory. It is located on the right side under the hopper. See Figure 12 on page 2. If setting up for the first time, please allow sufficient time for the refrigeration system to cool the products. 


Colder setting does not cool drinks faster but may cause drinks to freeze. 


Refrigeration Troubleshooting

Know and understand how to service the unit and how it operates. Units may vary, but the operation is basically the same. Never guess at the problem; find the symptom before attempting any repair. 


90% of refrigeration problems are electrical.

The sealed hermetic system was not meant to be worked on outside the Factory Service Center. The three things that can go wrong with a sealed system and should be repaired at the Factory Service Center are: 

1.      Low Charge - usually caused by leaks; look for oil around seals and welds. Unit will not cool properly. The capillary tube will be frosted before it enters the evaporator inlet tube. 

2.      Restriction in Systems (unit frost, then melts) - not cooling properly. 

Bad valves - unit does not cool properly; noisy compressor. 


Compressor Will Not Start

Compressor has no power: 

1.      Machine not plugged in. 

2.      Tripped breaker or blown fuse. 

3.      Faulty wall outlet. 

4.      Short or tear in power cord. 

5.      Improper wiring.  Low voltage: 5 % below.  Check the power source with the Multi-Meter. 

6.      Overload defective: Trips too fast. Check overload with the Multi-Meter. 

7.      Start relay defective: Check start relay with the Multi-Meter. 

8.       Compressor has open windings. Check compressor windings with a Multi-Meter. 


Compressor Trips On Overload

1.      Improper voltage: 5-10% above, 5% below. Check power source with Multi-Meter. 

2.      Overload defective: Trips too fast. Check overload with Multi-Meter. 

3.      Relay defective: Won't open after starting. Check relay with Multi-Meter. 

4.      Compressor has shorted windings: Check compressor windings with Multi-Meter. 

5.      Short in other component: Isolate and eliminate each electrical component until short is found. 

6.      Compressor is too hot. 

 Dirty condenser. 

 Faulty condenser motor or blade. 

 Restricted air flow. 


Noisy Or Vibrating Unit

1.      Components rubbing or touching each other. 

Check fan blades and motor. 

Loose shrouds and harness. 

Copper tubing. 

Loose or unsecured parts. 

2.      Worn or aged grommets. 

3.      Compressor 

 Bad valves 


 Bad windings (See Figure 13. Compressor Schematic on page 2) Low voltage 


Unit Short Cycles

Temperature setting set too warm. See Refrigeration Controls section on page 2 of this manual. 

Unit Operates Long Or Continuously

6.      Air flow restricted. 

Faulty evaporator motor or blades causing coils to ice over. 

Loose connections on evaporator motor. (One motor not running.) 

Air flow blocked by product in front of evaporator or air duct openings 

7.      Gasket leak around door. 

8.      Excessive load: After loading, unit will run longer to pull out excessive heat from product.  

9.       Shortage of refrigerant or restriction. 


Refrigerated Space Too Cold

Refrigeration control setting too cold. See Refrigeration Controls section on page 2 of this manual. 

Refrigerated Space Too Warm

1.      Refrigeration control setting too warm. See Refrigeration Controls section on page 2 of this manual. 

2.      Restricted evaporator space. 

Evaporator motor or blades faulty, causing the coils to ice over the evaporator. 

Condenser air flow restricted. 

·       Plugged or dirty condenser 

·       Condenser motor or blades bad 

·       Blade stuck 

Condensing space restricted 

·       Unit placed too close to a wall. 

Compressor - bad valves 

·       Cap tube will start frosting 8 to 10 inches past evaporator connection tube. 

·       Check for oil around brazed connections. 


Troubleshooting Circuits With Multi-Meter

·         Check the power source. Use voltage section of the Multi-Meter. Should measure within 5-10% above, 5% below. 

·         Check overload.  


Power must be off and fan circuit open.

Using the resistance section of the Multi-Meter, check terminals 1 and 3 for continuity. If no continuity is measured (infinity), overload may be tripped. Wait 10 minutes and try again. If still no continuity, overload is defective. 

·       Check relay (See Figure 13. Compressor Schematic on page 2) Unscrew lead terminals and remove relay from compressor. (NOTE: keep relay upright) 

·       Check terminals 1 and S, or L and S with the Multi-Meter. Replace relay if continuity exists. 

·       Check compressor windings. (See Figure 13. Compressor Schematic on page 2. 

·       Check winding resistance with the Multi-Meter. If readings are not within 2 Ohms, the compressor is faulty. 



Wiring diagrams must be followed as shown. Wrong wiring can cause serious electrical hazard and potential damage or rupture component electrical parts


Approximate resistance reading across terminals - use RXI scale:  


12 Ohms  


2 Ohms 


14 Ohms 


No Continuity 



Vending Machine Compressor Schematic  

Figure 13. Compressor Schematic  


Refrigeration Unit Removal

The refrigeration unit is a hermetically sealed completely self-contained modular 1/4 H.P. unit charged with 3.5 ounces of ozone-friendly R-134-a refrigerant. The complete refrigeration unit can be removed if there is a service problem. 


Do not place any object in the evaporator assembly area or inside the cabinet area that will block the airflow. This may damage the refrigeration system, which may void the refrigeration warranty.

1.      Unplug the power cord. 

2.      Remove the two screws holding the suction line cover. 

3.      Remove only the ten screws holding the refrigeration unit to the cabinet as shown in Figure 14.  

4.      From the front, disconnect the green ground (earth) wire from the power switch plate. 

5.      From the front, remove the screws holding the hopper and remove the hopper. 

6.      From the front, remove the air duct. 

7.      From the front, unscrew the "P" clamp that holds the main motor harness and the power harness to the power switch plate. 

8.      From the back, pull the unit out a few inches. Remove the Mastic from where the main motor cord enters the cabinet. Slide the cord out of the two slots (one on the outside of the panel and the other on the inside of the panel). 

9.      Use the handle on the unit and pull straight back to remove. 

To re-install the refrigeration unit, reverse the above procedures. 


Vending Machine Refrigeration Unit Removal  

Figure 14. Refrigeration Unit Removal 




Always disconnect the power before cleaning.  

Cabinet Exterior

Wash with a mild detergent and water, rinse and dry thoroughly. Wipe occasionally with a quality car wax. Plastic exterior parts may be cleaned with a quality plastic cleaner. 

Cabinet Interior

Wash with a mild detergent and water. Odors may be eliminated by including baking soda or ammonia in the cleaning solution. Remove and clean drain hose to eliminate any deposits that may restrict condensate water flow. 

The vend mechanisms must be kept clean. Any build-up of syrup deposits can cause the mechanisms to malfunction. Use soap and water with great care so as not to get water into the electrical components. 

To insure proper vending keep delivery slide area free of dirt and sticky substances. 

Refrigeration System

Clean dust from condenser and screen in the front door with a soft bristle brush or vacuum cleaner. Remove any dirt or debris from the refrigeration system compartment. Remove and clean the condensation pan. 

Do not block the evaporator or any area of the airflow with product or supplies. 




When ordering parts, include the following: 

1.       The model number and serial number of the vending machine for which the parts are needed. 

2.       Shipping address. 

3.      Address where the invoice should be sent. 

4.      The number of parts required. 

5.      Always refer to the pertinent parts and/or parts manual for the correct part number and description of a specific part. 


When RIGHT or LEFT is used with the name of a part, it means the person is facing the machine with the door closed. 

6.      Any special shipping instructions. 

7.      Carrier desired: air or air special, truck, parcel post, or rail.  

8.      Signature and date. 

9.      If a purchase order number is used, be sure that it is visible and legible. 



Mail your order to: 


165 North 10th Street  

Waukee, Iowa 50263 - USA 

Phone: 515-274-3641 

Parts Fax: 515-987-4447 

Sales Fax: 515-274-0390 


All orders are carefully packed and inspected before shipment. Damage incurred during shipment should be reported at once and a claim filed with the terminating carrier. 

If you do not have the right parts manual, contact the above address. VendNet™ will provide a copy for you, if available.  

Do not wait to order until you receive the parts manual; instead use the most accurate description you can. Include the model number and serial number of the machine, the name of the assembly in which the part is used, and if practical, a sample part. Furnish any information to enable our Parts Department to pinpoint the exact part needed.  




Please check the following: 

·         Does your machine have at least 4" of clear air space behind it? 

·         If the power is turned on at the fuse box, is the machine the only thing that doesn't work? 

·         Is the machine plugged directly into the outlet? 


Extension cords cause problems.


·         Is the evaporator coil free of dust and dirt? 

·         Is the condenser coil free of dust and dirt? 

·         Is the compressor free of dust? (A blanket of dust can prevent the compressor from cooling off between workouts). 

·         Is the circuit breaker at the fuse box reset? 

·         Are evaporator fans running? Take a sheet of paper approx. 4" x 5" in size. Place the paper in front of the evaporator coil and see if the evaporator fans will draw the paper to the coil. 

·         Is the condenser fan running? Fold a sheet of 8 1/2" x 11" paper in half. Place the paper in front of the condenser coils and see if it draws the paper to it.  

·         Is the shelf in front of the evaporator coil clear? (No tools or other air-restricting items). 

·         Is the cold control set between 0 and 2? 


Setting the cold control higher does not accelerate cooling of product.

For additional information
Phone: 1-800-833-4411 or

Include model number and serial number 




Vending Machine Schematic 


The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specifications of such products at any time without notice. 



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