SM15A Commercial Slush Machine Specification

Slush machines are essential equipment for the global retail sector, widely adopted in tea shops, bars and fresh food supermarkets. Thanks to continuous slush production capability, they are popular among physical retail stores. Cooluma specializes in the R&D and manufacturing of commercial catering refrigeration equipment. The SM15A single-bowl 15L commercial slush machine is a compact unit developed for small outlets and light catering scenarios.

I. Market Importance of Slush Machines

1.1 Business Value for Stores

Slush machines play a vital role in beverage offerings for physical retailers. The gross profit margin of slush drinks can reach 70%~85%, far higher than ordinary bottled beverages. Compared with traditional manual slush preparation, this machine delivers higher efficiency. Operators can pre-mix raw materials and store them ready for use, speeding up order fulfillment.

It serves as a must-have device for small venues such as neighborhood convenience stores, cafes and compact bars with limited floor space. The compact single-bowl slush machine targets this niche market. Featuring a 15L capacity with tabletop/vertical compact body, it fits front-counter display setups where space is tight.

1.2 Product Positioning & Competitive Advantages

Low-cost slush machines available on the market commonly suffer multiple pain points: poor-quality compressors prone to shutdown during prolonged continuous operation; inadequate temperature control that either causes ice blockages inside the bowl or fails to form qualified slush; non-food-grade bowl materials susceptible to bacterial growth and non-compliant with overseas food hygiene regulations; bulky body making installation and handling difficult; seal gaskets prone to aging and leakage, complicated disassembly and cleaning, and spare parts hard to source for repairs.

During the design phase of SM15A, an air-cooled high-efficiency compressor refrigeration system is adopted, paired with a food-grade transparent PC bowl for visual display of beverage colors, adding merchandising value for in-store display. The whole machine consumes low power with a rated power of 450W, consuming less energy than competing models of the same capacity. It supports long-time standby power-on in retail outlets and cuts long-term electricity expenses. The machine features a modular design. Mixing assembly, dispensing tap and drip tray can be quickly disassembled to simplify daily cleaning and reduce store maintenance workload. Custom multi-voltage options are available to match power grids across Europe, North America, Southeast Asia and other regions, satisfying export demands.

From the perspective of operating cost, its MTBF (Mean Time Between Failures) ≥8000 hours, achieving an industry-low failure rate. The net weight of one unit is only 27kg.

II. Detailed Specifications of SM15A

Below are detailed technical parameters. Derivative models in the same series include SM30A and SM45A, differing mainly in tank capacity.

Cooling is implemented via air circulation refrigeration. No external water supply is required, enabling simple installation: just place it on a flat countertop and connect power. Suitable for mobile stalls and stores without plumbing.

Built-in continuous stirring motor runs at low speed to mix constantly, preventing ice crust buildup on bowl inner walls, maintaining smooth and uniform slush texture and avoiding coarse ice crystals that ruin taste.

The bowl is made of food-grade high-transparency polycarbonate (PC), impact-resistant, low-temperature resistant and highly transparent. Customers can clearly view drinks inside for attractive shop display. It complies with safety standards for food-contact materials.

The outer cabinet is constructed from brushed stainless steel, anti-rust and corrosion-resistant. Grease and stains on the surface can be easily wiped off, adapting to humid catering environments.

Dispensing adopts a manual push-type tap fitted with food-grade silicone seals and anti-drip design. No persistent dripping contaminates countertops after dispensing stops. The dispensing valve can be disassembled for cleaning.

Comes with removable drip tray to catch drips and keep counters clean. Fitted with anti-slip, shock-absorbing feet at the base to reduce vibration and noise during operation and prevent sliding.

Operating noise ≤58dB. When deployed at store front counters, it will not generate loud noise or disturb customer experience.

Working temperature range: bowl temperature maintains between -3℃ ~ +5℃. It can produce semi-frozen slush and also serve to chill and stir regular cold beverages. Dual-purpose design allows use as chilled juice agitator during off-peak seasons to maximize equipment utilization rate.

It features a simple mechanical control panel with power switch, refrigeration switch and stirring switch. Operation logic is intuitive, requiring minimal staff training. Compared with touch panels, mechanical buttons are waterproof and moisture-resistant for longer service life and lower failure rates in catering settings.

Refrigerant: R290 eco-friendly hydrocarbon refrigerant with low GWP, environmentally sustainable. Complies with EU F-Gas regulation and meets refrigerant access requirements in many countries globally.

fully automatic microcomputer control system;
Platinum resistance temperature sensor to collect material temperature;Drive chip to collect current;Accurate,safe and reliable data.
World famous brand compressor;High-efficiency quick-freezing stainless steel evaporator;Refrigeration system with stable operation,fast speed and high output.

Notes on specifications: 15L refers to total bowl volume. Do not fill liquid to full capacity. Liquid level rules must be followed: the minimum liquid level needs to cover the mixing paddle, while the maximum liquid level cannot exceed the bowl maximum safety scale line. Otherwise, liquid overflow during stirring may damage internal electrical components.

III. Product Certifications & Compliance

Complete certification documents can be provided for SM15A to satisfy customs clearance and local health inspection requirements in different countries, which are top compliance concerns for overseas buyers.

CE marking is mandatory for EU market access, covering LVD Low Voltage Directive and EMC Electromagnetic Compatibility Directive. The machine meets EU standards on electrical safety and electromagnetic interference. It clears customs smoothly for EU member states and passes local food authority inspections at retail premises.

RoHS (Restriction of Hazardous Substances Directive): heavy metal and hazardous substance levels in circuit boards, wiring and plastic components of the machine meet requirements.

LFGB Food Contact Material Certification (German food-grade standard). All beverage-wetted components including bowl, dispensing tap and sealing gaskets pass LFGB testing, ideal for high-end European catering markets.

FDA Food Contact Material Certification. PC bowl and silicone seals conform to US FDA food-contact standards, mandatory for exports to the United States.

ISO9001 Quality Management System Certification. The manufacturing factory holds ISO9001 certification with standardized full-process control covering raw material procurement, sheet metal fabrication, component assembly and full-machine aging testing.

CB Certification (optional); ETL Certification (for North America, available on request with extra charges).

Other optional documents: BSCI factory audit report to satisfy factory inspection requirements of large supermarket chains and brand clients.

Compliance reminder: market access regulations vary by country and region. Commercial food equipment in some North American jurisdictions requires ETL/NSF certification. If purchasing for convenience stores within mainland USA, inform sales teams prior to order placement to confirm ETL certification requirements, and assess certification lead time and extra fees in advance. Scanned copies of all certificates are available; hard copy duplicates can be shipped together with goods for customs clearance.

IV. Intended Use & Application Scenarios

Dual functions: slush preparation and cold drink chilling & stirring. Applicable industries span retail, catering, tourism and leisure sectors:

4.1 Core Application Scenarios

1. Convenience Stores & Community Mini Supermarkets

Make fruit slush and cola slush to boost cold drink sales in summer. Compact footprint allows installation beside checkout counters for self-service dispensing.

2. Specialty Coffee Shops & Bakeries / Dessert Stores

Offer fruit slush and frozen lemon tea to enrich summer menus, paired with cakes and desserts to lift average order value.

3. Bars, Lounges & Gastropubs

Produce frozen margaritas, cocktail slush and pre-blended alcoholic frozen drinks. Note: alcohol-based mixes are recommended to have reduced alcohol concentration; high alcohol content alters freezing point and impairs slush formation.

4. Cinemas, Amusement Parks, Swimming Pools & Scenic Spot Kiosks

Subject to seasonal high foot traffic. Used for peak summer seasons and converted to chilled juice tank during off-seasons.

5. Exhibitions, Markets, Pop-up Stores & Food Trucks

No water inlet or drainage required; only power supply needed. Lightweight for easy transport, suitable for temporary short-term operations.

4.2 Beverages Available

Fruit-flavored slush, concentrated juice slush, frozen lemonade, non-alcoholic pre-blended frozen drinks, frozen tea and granita. During off-peak periods, turn off refrigeration and keep stirring to hold freshly squeezed juice or milk tea; continuous agitation prevents pulp sedimentation. Dual-purpose design improves year-round machine utilization rate.

4.3 Not Recommended Scenarios

1. Large supermarkets and water parks with ultra-high customer flow during peak hours: twin-bowl or triple-bowl high-capacity models are suggested for heavy continuous demand;

2. High-viscosity dairy bases or pure dairy products: dairy spoils easily and demands stringent cleaning; seals will age rapidly;

3. Mixes with large fruit pulp or seeds: these may jam mixing paddles, wear gaskets and clog dispensing taps. Filtration is mandatory if such ingredients are used;

4. Outdoor locations under direct sunlight: direct solar exposure drastically raises refrigeration load, lowers cooling efficiency and accelerates ageing of plastic parts.

V. SM15A Standard Operating Procedure

This unit is commercial electric refrigeration equipment. Operators must read the manual before use and strictly follow liquid level requirements. Do NOT run refrigeration with an empty bowl. Empty-bowl refrigeration quickly damages mixing assembly and evaporator; such damage caused by improper operation is excluded from warranty coverage.

5.1 Preparations Before First Startup for New Machine

Unpack and inspect upon first use: check overall body, bowl, gaskets, dispensing tap and power cord for shipping dents and breakage. Cross-check accessory checklist (drip tray, user manual, spare parts kit including replacement gaskets).

Let the machine stand still before powering on. After long-distance transport, compressor refrigeration oil shifts. A minimum 4-hour resting period is required before power connection to prevent compressor failure.

Disassemble and clean: remove bowl, mixing paddle, dispensing valve and gaskets. Wash all food-contact components in warm water with neutral food-safe detergent, rinse thoroughly with clean water and fully air-dry before reassembly. Site placement: set on a flat, stable countertop. Reserve ≥10cm clearance at machine rear for air cooling; keep away from high-temperature heat sources such as ovens and water heaters, and avoid direct sunlight. Ensure anti-slip feet rest evenly on surface.

Power check: confirm supply voltage matches rating plate voltage. Reliable earthing protection is required. A dedicated outlet is recommended; do not share power strips with high-power appliances.

5.2 Material Loading & Startup Steps

After full assembly, pour in prepared mixes. Liquid level must cover mixing paddle blades at minimum and shall not exceed bowl MAX marking at maximum. Dry running with empty bowl is forbidden.

Switch on in sequence: Power Switch → Stirring Switch → Refrigeration Switch. Stirring system rotates continuously and refrigeration system starts cooling down.

Slush formation waiting time: under standard ambient temperature of 25℃, qualified slush is normally ready within 40~90 minutes. Higher ambient temperature extends formation time. Observe ice crystal status in bowl during this period and avoid frequent lid opening.

Dispensing operation: push dispensing handle and slush flows out automatically; release handle to close automatically with anti-drip seal shutting off. Collect drips by drip tray and empty it periodically.

5.3 Shutdown Procedure

Turn off refrigeration switch first. Stirring can keep running for another 15~30 minutes to avoid mixes fully freezing into solid blocks inside bowl; then turn off stirring and main power supply.

For long-term shutdown (over 24 hours), fully empty all liquid inside bowl, disassemble and clean all food-contact components and store after complete drying.

Important reminder: Raw materials inside the bowl cannot be stored at ambient temperature for extended periods, as they are perishable food. Failure to clean after business hours creates high bacterial growth risk and food safety hazards. Storing mixes overnight in bowl is not advised unless professional low-temperature preservation solutions are available.

5.4 Daily Operation Prohibitions

Do not scrape bowl inner wall with hard metal objects; PC bowl surface is prone to scratches;

Never pour boiling water directly into bowl; high temperature deforms and damages the bowl;

Do not forcibly disassemble mixing assembly while machine is running;

Do not spray high-pressure water directly onto whole machine body. Electrical panel and compressor zone must stay dry; wipe cabinet only with damp cloth;

If ice jams the mixing paddle, cut off power immediately and wait for thawing. Do not force power-on startup, which will burn out the motor.

VI. Equipment Maintenance Plan (Daily, Weekly & Monthly Maintenance, critical for service life of commercial equipment)

Routine maintenance includes post-business daily maintenance, weekly deep disassembly maintenance and monthly full machine inspection maintenance. Proper maintenance extends stable service life of slush machine to 5~8 years. Neglect of cleaning and maintenance causes moldy gaskets, higher motor load, premature compressor failure and food safety risks.

6.1 Daily Maintenance (Mandatory after store closing every day)

Empty leftover beverages inside bowl, remove dispensing tap, drip tray and take out mixing paddle.

Clean bowl, mixing paddle, gaskets and dispensing valve with warm water below 40℃ plus food-grade neutral detergent to remove syrup residues. Strong acid/alkaline cleaners or bleach are prohibited; they corrode silicone gaskets and accelerate cracking and ageing.

Rinse repeatedly with clean water to fully eliminate detergent residues. Air-dry all components in ventilated area, do NOT reassemble parts while still wet, as humid conditions foster mould growth.

Wipe stainless steel cabinet exterior and control panel with slightly damp cloth to remove syrup stains. Avoid heavy water splash on control panel.

Empty waste liquid from drip tray, clean and reinstall after drying.

6.2 Weekly Deep Maintenance (Carry out on one fixed day weekly after closing)

Complete full disassembly and cleaning. Focus inspection on silicone gaskets: check for whitening, cracking, hardening or mould spots. Replace with spare gaskets from spare parts kit immediately once damaged. Gaskets are consumable items; stocking spare parts is recommended.

Check rotation of mixing paddle for smooth operation and abnormal noise. If rotation is stuck, inspect for jammed fruit residues.

Clean rear cooling grille of machine: cut off power, brush dust off condenser cooling fins. Dust buildup severely reduces air cooling efficiency. Compressor runs under continuous heavy load with increased power consumption and risks overheat protection shutdown. This is the most frequent failure cause for air-cooled equipment.

Inspect power cord and plug for sheath damage and verify proper earthing.

6.3 Monthly Full Machine Maintenance

Complete all items of weekly maintenance. Apply food-grade silicone lubricant on mixing shaft bearing (only food-safe lubricant; industrial oil is forbidden) to reduce friction noise and protect bearings.

Conduct no-load power-on test of whole machine, activate stirring and refrigeration sequentially, check normal cooling performance and abnormal noise or odour.

Verify machine level placement, check loose feet and wobble, adjust anti-slip feet accordingly.

Count inventory of spare parts, confirm stock of spare gaskets and procure replacements in advance to prevent unexpected store downtime caused by gasket failure without spares.

6.4 Troubleshooting Checklist (Simple faults for on-site store diagnosis)

No cooling: check dust on cooling fins and adequate ventilation; confirm stable voltage and refrigeration switch turned on.

Stirring not running: insufficient liquid level, material jammed by ice clumps or poor power contact.

Dripping at dispensing outlet: aged gasket or residues stuck on sealing face of tap; clean or replace gasket.

Rising noise: mixing paddle jammed by foreign objects, dust accumulation on cooling fan or uneven machine placement.

6.5 Reference Replacement Cycle for Consumables

Spare part replacement depends on usage conditions. Silicone gaskets are recommended to be replaced every 6~12 months; for high-frequency use stores, replace every 6 months. Dispensing valve cartridge: 12~18 months. Cooling fan: 3~5 years. Consumable items are excluded from main unit warranty. Spare parts kits can be ordered and shipped together with purchase orders.

VII. Trade Terms & Payment

FOB, CIF and EXW trade terms are generally available. Payment terms for foreign trade orders: advance deposit and balance payment executed per contract.

VIII. Warranty & After-sales Terms

Warranty for main unit: 12 months for whole machine (calculated from bill of lading date). Core components including compressor and motor carry a 1-year warranty. Warranty only covers defects in raw materials and production assembly.

Cooluma provides English version user manuals. Remote online technical guidance is available for bulk buyers. Spare parts can be exported and shipped separately.

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