The Complete Guide to the Refurbished USI 3179 Drink Vending Machine

Table of Contents

1. Introduction to the USI 3179 & The Refurbished Advantage

2. Detailed Specifications & Core Features

3. The Refurbishment Process: What “Refurbished” Really Means

4. Benefits of Choosing a Refurbished USI 3179

5. Ideal Locations & Beverage Mix Strategy

6. Setting Up Your Machine: Installation & Programming

7. Daily Operations, Servicing & Proactive Maintenance

8. Troubleshooting Common Issues

9. Modernization: Upgrading with Cashless & Telemetry

10. Cost Analysis, ROI, and Procurement Guide

11. Frequently Asked Questions (FAQ)

12. Conclusion: Is a Refurbished USI 3179 Right for You?

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1. Introduction to the USI 3179 & The Refurbished Advantage

In the dynamic world of vending, the USI 3179 stands as a titan. Manufactured by USI (formerly Polyvend, and now part of Crane Merchandising Systems), this 79-inch tall, glass-front drink machine has been a staple in high-traffic locations for decades. Renowned for its massive capacity, robust cooling system, and reliable delivery mechanics, it’s built to move high volumes of cans and bottles with exceptional efficiency.

But why consider a refurbished model? For vending operators, whether seasoned or new, a professionally refurbished USI 3179 represents the pinnacle of value—blending proven, industrial-grade hardware with a cost-effective entry point. A refurbished machine isn’t just “used”; it’s a carefully renewed asset. It undergoes a comprehensive process where it is disassembled, cleaned, repaired, updated, and tested to meet stringent performance standards, often rivaling (or exceeding) new machines in reliability, but at a fraction of the cost.

This guide from VendingMachines.com will explore every facet of the refurbished USI 3179. We will dissect its features, demystify the refurbishment process, outline the substantial financial benefits, and provide a masterclass in operation and maintenance. By the end, you’ll have a clear blueprint for determining if this workhorse is the engine to drive your vending profits.

2. Detailed Specifications & Core Features

Understanding the physical and technical build of the USI 3179 is key to appreciating its capabilities.

Physical Dimensions & Layout:

• Height: 79 inches

• Width: 39 inches

• Depth: 35 inches

• Weight: Approximately 650 lbs (empty)

• Capacity: The “3179” name reveals its core: 31 selectable columns and a 79-inch height. This translates to a typical capacity of 310-372 cans (12 oz) or 186-248 bottles (20 oz), depending on product mix and shelf configuration.

• Vend Mechanism: Utilizes a gravity-fed “stack” system. Products are loaded from the top and rest on serpentine trays. When a purchase is made, an electric solenoid releases the bottom product, allowing it to drop into the delivery bin. This simple system is incredibly fast and reliable for standard cans and bottles.

• Cooling System: A powerful self-contained, forced-air refrigeration system with a hermetic compressor. It rapidly chills products and maintains a consistent temperature of 34-38°F across all columns.

• Lighting: Features fluorescent or LED lighting (often upgraded during refurbishment) to brightly illuminate the product selection, enhancing visual appeal.

• Payment System Ready: Comes standard with an MDB (Multi-Drop Bus) interface, making it compatible with all modern bill validators, coin mechs, and cashless systems.

Configuration Flexibility:
One of the 3179’s greatest strengths is its adaptability. The 31 columns can be configured using adjustable shelves and product shims to vend a vast array of packages:

• Standard 12 oz cans

• 16 oz PET bottles

• 20 oz PET bottles

• 24 oz bottles

• Energy shot bottles

• Glass bottles (with appropriate trays)
  This allows operators to tailor the product mix precisely to location demographics.

3. The Refurbishment Process: What “Refurbished” Really Means()

Not all refurbished machines are created equal. A high-quality refurbishment, like those offered by reputable dealers, involves a multi-point renewal process:

1. Comprehensive Inspection & Evaluation: The machine is fully tested to identify all mechanical, electrical, and cosmetic issues.

2. Deep Cleaning & Sanitization:

• Interior and exterior are stripped and thoroughly cleaned.

• Cooling system components (condenser, evaporator) are degreased and sanitized.

• Delivery chutes and product trays are washed.

3. Mechanical & Electrical Overhaul:

• Refrigeration: Compressor performance is tested. If below spec, it is replaced with a new or remanufactured unit. Evaporator and condenser fans, thermostats, and relays are checked and replaced as needed. The system is recharged with EPA-compliant refrigerant.

• Vending Mechanisms: All 31 solenoid releases and product trays are tested. Worn solenoids, springs, and shims are replaced.

• Control System: The main logic board is tested. Older non-MDB boards are often upgraded to modern MDB-compliant boards for better payment system compatibility.

• Payment System: Old coin mechs and bill validators are removed. The machine is prepared for new, modern units.

4. Cosmetic Restoration:

• The exterior cabinet is cleaned, sanded, and repainted with a durable, commercial-grade finish in the original colors (typically black or silver).

• The front fascia and trim are cleaned or replaced.

• The display window is polished or replaced if scratched.

• New USI 3179 decals and branding are applied.

5. Modernization Upgrades (Often Included or Optional):

• LED Lighting Kit: Replaces old fluorescent tubes with bright, cool-running, energy-efficient LED strips.

• Energy Management Device: Installation of a controller to cycle the compressor and lights for significant energy savings.

• Updated Keypad & Display: Installation of a new, easier-to-read control interface.

6. Final Testing & Certification:
The machine undergoes a full cycle test: cooling to proper temperature, payment system integration, and successful vending from every column. It is then certified for operation.

4. Benefits of Choosing a Refurbished USI 3179

Opting for a refurbished model offers a compelling array of advantages over both new and “as-is” used machines:

• Substantial Cost Savings: The primary benefit. A refurbished USI 3179 typically costs 30-50% less than a brand-new equivalent model (like a Crane 350 or newer USI), freeing up capital for other business investments.

• Proven Reliability & Known Durability: The 3179’s design has stood the test of time. Its mechanical simplicity means fewer things can go wrong compared to more complex spiral machines. You’re investing in a known, reliable platform.

• Reduced Risk vs. “As-Is” Purchases: An “as-is” machine from an auction is a gamble. A refurbished unit comes with a warranty (typically 90 days to 1 year on parts and labor for the refurbishment work), providing crucial peace of mind.

• Modern Performance: A quality refurbishment includes critical updates (MDB board, clean cooling system) that bring an older machine up to current operational standards.

• Faster ROI: The lower initial investment means the machine can pay for itself much quicker. High sales volumes are possible from day one due to its large capacity.

• Eco-Friendly Choice: Refurbishment is the ultimate form of recycling. It extends the life of a quality machine, keeping it out of a landfill and reducing the demand for new raw materials and manufacturing energy.

• Immediate Availability: New machines can have lead times. High-quality refurbished units are often in stock and ready for immediate shipping and deployment.

5. Ideal Locations & Beverage Mix Strategy

The USI 3179 is built for volume. Its success hinges on placement in the right environment.

Top-Tier Locations:

• Manufacturing Plants & Factories: High employee counts and limited off-site options drive consistent daily sales.

• Distribution Centers & Warehouses: Similar to factories, with a workforce in need of quick refreshment.

• Large Office Complexes (200+ employees): Can support the machine’s capacity, especially if paired with a snack machine.

• Universities & Colleges: Place in dorm lounges, student unions, or library corridors.

• Hospitals & Medical Centers: Staff, patients, and visitors create steady, 24/7 demand.

• Transportation Hubs: Airports, bus terminals, and train stations (though often require specialized payment systems).::Refurbished USI 3179 Drink Vending Machine

Beverage Mix Optimization:

• The 80/20 Rule: Typically, 80% of your sales will come from 20% of your SKUs. Identify these core products (e.g., Coca-Cola, Diet Coke, Pepsi, Mountain Dew, bottled water, Red Bull).

• Column Allocation: Allocate more columns (2-4) to your top-selling beverages. Use single columns for niche or trial products.

• Price Point Strategy: Configure some columns for value (12 oz cans) and others for higher-margin items (20 oz bottles, premium energy drinks, enhanced waters).

• Seasonal Adjustments: In summer, increase water and sports drink allocation. In winter, perhaps add more hot beverage options if location allows, though the 3179 is cold-only.:Refurbished USI 3179 Drink Vending Machine

6. Setting Up Your Machine: Installation & Programming

Installation Checklist:

1. Site Preparation: Ensure a solid, level floor. Clearance of 4-6 inches on sides and top for ventilation is crucial. A dedicated 115V, 15-amp outlet must be within reach of the power cord.::Refurbished USI 3179 Drink Vending Machine

2. Delivery & Placement: Use a pallet jack or appliance dolly. Leveling is non-negotiable. Use a carpenter’s level on the top of the cabinet and adjust the front leveling legs. An unlevel machine will cause products to jam in the delivery chutes.

3. Power & Cooling: Plug in the machine and allow the refrigeration system a full 24 hours to reach optimal temperature (34-38°F) BEFORE loading any product. Loading warm drinks into a warm machine will cause condensation and potential issues.:::Refurbished USI 3179 Drink Vending Machine

4. Payment System Installation: Install your chosen MDB bill validator and coin mech, ensuring they are securely locked in place.

Basic Programming via the Service Keypad:
(Always refer to the specific manual for your control board)

• Access the programming menu by unlocking the main door and using the keypad inside.

• Set Pricing: Program prices by column. You can set individual prices for all 31 columns or set a default price for all and adjust exceptions.

• Set Date/Time: Critical for accurate sales data tracking via DEX.

• Test Mode: Use the manual test mode to activate each column’s solenoid to ensure proper operation during setup.”””Refurbished USI 3179 Drink Vending Machine

7. Daily Operations, Servicing & Proactive Maintenance

Route Driver Responsibilities (Weekly/Bi-Weekly):

• Data Collection: Use a handheld route device or DEX/UCS cable to download sales data, identifying fast and slow movers.:::Refurbished USI 3179 Drink Vending Machine::Refurbished USI 3179 Drink Vending Machine

• Restocking: Follow a planned “pick list” based on sales data. Load products from the top, ensuring they are aligned correctly on the serpentine trays.::Refurbished USI 3179 Drink Vending Machine

• Collection: Empty the cash cassette from the bill validator and the coin box from the coin mech.

• Visual Inspection: Check for any error messages, lights out, or obvious jams.

Proactive Maintenance Schedule:

• Monthly: Wipe down the exterior and clean the delivery bin area.

• Quarterly (CRITICAL): Clean the condenser coils. Located behind the lower front kickplate or at the rear. Use a coil brush and vacuum or compressed air to remove dust and lint. Dirty coils are the leading cause of compressor failure and inefficient cooling.

• Bi-Annually: Inspect door gaskets for wear or tears and clean them with mild soap. Check for loose wiring or connections inside the service panel. Verify that all product shims and trays are secure and not damaged.::Refurbished USI 3179 Drink Vending Machine

8. Troubleshooting Common Issues

• “Vend Motor Fault” or Column Won’t Vend:

  • Cause: Solenoid failure, jammed product, misaligned product tray, or a stuck microswitch.

  • Fix: Clear any visible jam. Manually test the solenoid in service mode. Listen for a “click.” If no click, the solenoid may need replacement. Ensure the product is the correct size for the column configuration.

• Warm Drinks / Poor Cooling:

  • Cause #1: Dirty condenser coils (most common).

  • Cause #2: Failed evaporator fan inside the cabinet.

  • Cause #3: Low refrigerant charge or compressor issue.

  • Fix: Clean coils first. If problem persists, listen for the internal fan running. If not, fan motor may need replacement. Compressor issues require a professional technician.:::Refurbished USI 3179 Drink Vending Machine

• Payment System Rejects Valid Currency:

  • Cause: Dirty optics, misaligned validator, or incorrect programming.

  • Fix: Use a bill validator cleaning card. Ensure the validator is fully seated in its slot. Reboot the machine. Check that the machine’s pricing is set (a $0.00 price can cause rejection).

• Machine is Leaking Water:

  • Cause: Usually a clogged or misaligned drain pan/tube from the condensation runoff of the cooling system.

  • Fix: Check the drain pan (under the evaporator inside the cabinet) and the drain tube that leads to the exterior drip tray. Clear any blockages.::Refurbished USI 3179 Drink Vending Machine::Refurbished USI 3179 Drink Vending Machine

9. Modernization: Upgrading with Cashless & Telemetry

To maximize a refurbished 3179’s potential in today’s market, consider these investments:

• Cashless Vending System: Adding a card reader (e.g., from Cantaloupe, Nayax, or USA Technologies) is essential.

  • Benefits: Increases sales by 20-40%, caters to cashless consumers, increases average transaction value, and provides digital sales data.

  • Process: A kit includes a reader, harness, and sometimes a new controller. It plugs directly into the MDB port.::::Refurbished USI 3179 Drink Vending Machine

• Telemetry & Remote Monitoring: Most cashless systems include this, or you can add a separate cellular module.

  • Benefits: Receive real-time alerts for machine health (temperature spikes, power outages, door openings). Monitor sales remotely to optimize route planning. Know exactly when a column is sold out.

• Energy Management System (EMS): A device like the eSight or VendScreen Energy can manage compressor and lighting cycles.

  • Benefits: Can reduce the machine’s energy consumption by 25-40%, a major cost savings given the 3179’s constant cooling load.:::Refurbished USI 3179 Drink Vending Machine

10. Cost Analysis, ROI, and Procurement Guide

Cost Breakdown:

• High-Quality Refurbished USI 3179: $2,800 – $4,200. This includes cosmetic refresh, mechanical overhaul, basic testing, and a warranty.

• New Payment Systems: Bill Validator & Coin Mech Combo: $400 – $700.

• Cashless Vending Kit: $500 – $900 (plus potential transaction fees).

• Estimated Total Startup Investment: $3,700 – $5,800.

Return on Investment (ROI) Scenario:

• Assumptions: Machine placed in a 300-person factory. Average sale price: $2.00. Average weekly sales: 250 items.

• Weekly Gross Revenue: 250 x $2.00 = $500.

• Weekly Costs (Est.): Product Cost (40%): $200. Location Commission (20%): $100. Estimated Misc. (5%): $25. Total Weekly Cost: $325.

• Weekly Net Profit: $500 – $325 = $175.

• Simple Payback Period: $4,500 total investment / $175 weekly net = ~26 weeks (approx. 6 months). After payback, the machine generates significant ongoing profit.:::Refurbished USI 3179 Drink Vending Machine

Where to Buy a Refurbished USI 3179:

• Specialized Vending Equipment Distributors: (Like VendingMachines.com) Their core business is refurbishing and selling. They offer warranties, support, and often financing.

• Direct from Refurbishers: Many companies operate solely as refurbishment centers.

• What to Ask the Seller:

  • What is included in your refurbishment process?

  • What is the warranty term and what does it cover?

  • Do you provide a detailed test report?

  • Are payment systems included? If so, what models?

  • Do you offer delivery or shipping?

  • ::Refurbished USI 3179 Drink Vending Machine::Refurbished USI 3179 Drink Vending Machine:::Refurbished USI 3179 Drink Vending Machine

11. Frequently Asked Questions (FAQ)

Q: Can the USI 3179 vend bottles and cans mixed in the same column?
A: No. Each column must be configured for a single product type and size. Mixing sizes will cause jams.

Q: How do I know if a machine has been properly refurbished?
A: Ask for details of the process, photos of the interior (clean coils, new solenoids), and a copy of the warranty. Reputable sellers are transparent.

Q: What’s the biggest maintenance headache with this model?
A: Neglecting the condenser coil cleaning. This simple quarterly task prevents the most costly repair—compressor replacement.

Q: Is it difficult to change the product mix or configure columns?
A: Not difficult, but it requires physical adjustment. You must change the product shims and sometimes the trays to accommodate different bottle diameters. It’s a manual process best done during a service stop.

Q: Can I connect a DEX cable to download sales data?
A: Yes. The MDB control board has a standard DEX port. You can connect a handheld or use a telemetry device to capture this data wirelessly.::Refurbished USI 3179 Drink Vending Machine

12. Conclusion: Is a Refurbished USI 3179 Right for You?

The refurbished USI 3179 drink machine is not a relic; it’s a strategic opportunity. It is the ideal choice for:

• New Operators seeking a high-capacity, reliable machine to secure a first major location without the capital outlay for new equipment.::Refurbished USI 3179 Drink Vending Machine

• Established Operators looking to expand their route cost-effectively or replace aging, unreliable cold drink equipment.

• Business Owners who want to provide an excellent amenity for their large workforce and control the product selection.

Its strengths are undeniable: massive capacity, legendary durability, simple mechanics, and a low cost of entry after refurbishment. The potential weaknesses—primarily its energy consumption and need for proactive maintenance—are easily managed with modern EMS devices and a disciplined service routine.

If you have a high-traffic location secured and a plan for efficient service, a refurbished USI 3179 is one of the smartest, most profitable investments you can make in the vending business. It offers a near-perfect balance of performance, reliability, and financial sensibility.

Ready to power your vending route with a renewed classic? Explore our curated inventory of fully refurbished, tested, and warranted USI 3179 machines at VendingMachines.com. Our experts are here to help you select the right machine and the right upgrades to ensure your vending success from the very first vend.