If the air conditioning radiator of a train accumulates dust and its cooling efficiency drops by 30%, how much will the annual electricity bill increase?
The water consumption for cleaning an air conditioner can be as high as several hundred liters. How can the pressure of environmental protection and cost be balanced?
How can the problems such as the difficulty in rinsing with high-foam cleaning agents, the extension of working hours, and the continuous rise in labor costs be solved?
Case Details
1. Problem (Rail Transit Air Conditioning Cleaning Pain Points)
Traditional cleaning chemicals and manual cleaning methods for train air conditioning units bring multiple operational, equipment and environmental troubles for rail transit operators:
- Conventional cleaners generate massive foam, requiring repeated high-pressure flushing; water consumption is huge, raising water treatment costs and wasting water resources.
- Ordinary alkaline cleaners cause corrosion, oxidation, discoloration and surface pitting on aluminum fins, aluminum alloy condensers and stainless steel housings; long-term use damages air conditioning heat exchange components and shortens equipment service life.
- Mixed dirt including oil, dust, scale and oxide layers cannot be fully removed in one cleaning cycle; residual dirt blocks heat dissipation channels, reducing air conditioner refrigeration efficiency and increasing power consumption of locomotives and subways.
- Common cleaning agents contain nitrite, chromate or heavy metal substances, failing to meet rail transit industry environmental standards and RoHS compliance requirements, bringing export and operation compliance risks.
- Complex cleaning procedures demand long operation time; multi-step soaking, scrubbing and rinsing increase labor costs and extend vehicle maintenance downtime.
- Some cleaners erode rubber sealing strips inside air conditioning units, triggering air leakage and component failure, leading to frequent after-sales maintenance.
Ruibao GRB-802 Train Air Conditioning High-Efficiency Cleaner is an independently developed patented water-based cleaner exclusively for rail transit air conditioning systems, solving all above cleaning pain points in one single spraying & flushing step, realizing water-saving, energy-saving, anti-corrosion and eco-friendly cleaning simultaneously.
2. Material (Product Formula & Applicable Workpiece Substrates + Physical Index Data)
2.1 Core Formula Composition (From MSDS Document)
GRB-802 is a mixed alkaline water-based compound cleaner, main raw material components:
- Composite alkanolamine: 5~15%
- LS1400 surfactant: 6~8%
- Aluminum special protective agent: 1~2%
- Fatty alcohol ethoxylate (CAS: 68131-39-5): 3~7%
- Alkaline auxiliary agent: 10~15%
- Deionized water (CAS:7732-18-5): Balanced remainder
Free of sodium nitrite, chromate, heavy metals and other hazardous controlled substances, low surface tension, added dedicated aluminum anti-corrosion ingredients to protect aluminum substrates during cleaning.
2.2 Applicable Rail Transit Air Conditioning Materials
- Aluminum fins, aluminum alloy condenser, aluminum air grille
- Stainless steel air conditioner outer shell, fan housing
- Compatible with conventional rubber sealing parts inside air conditioning equipment, no swelling or corrosion damage
2.3 Standard Physical & Chemical Parameters (25℃ Test Condition)
| Test Item |
Official Index Standard |
| Appearance |
Colorless to yellow transparent liquid |
| Odor |
Non-irritating smell |
| Specific Gravity |
1.15±0.02 |
| Detergency (60℃) |
≥90% |
| pH Value (3% aqueous solution) |
12.0 ~ 13.0 |
| Surface Tension |
≤30 mN/m |
| Rinsing Performance |
No visible cleaner residue after flushing |
| High-Temperature Stability |
Uniform & no stratification after 6h at (60±2)℃ |
| Low-Temperature Stability |
Uniform & no stratification after 24h at (-5±2)℃ |
| Refractive Index |
29 ~ 32 |
2.4 Product Safety Classification (MSDS)
Classified as non-dangerous goods under EU CLP Regulation (EC) No 1272/2008; non-flammable, no explosion risk, low environmental hazard.
3. Soil (Target Dirt Types for Removal)
GRB-802 can completely dissolve and strip composite dirt accumulated on train air conditioning components:
- Mechanical lubricating oil, dust mixed oil stains on radiator fins and grilles
- Workshop dust, suspended particulate sediment and gray scale cinder
- Aluminum surface oxide film, mold spots and metal oxidation layers
- Long-term accumulated mixed dirt blocking heat dissipation gaps of air conditioning radiators
4. Cleaning Process (Standard On-Site Operation Flow for Rail Transit Maintenance)
4.1 Recommended Operation Method
Direct stock liquid spraying process (no dilution required):
- Evenly spray undiluted GRB-802 cleaner on the surface of air conditioning fins, grilles and stainless steel shells
- Standing reaction time: 2–5 minutes (adjust according to dirt thickness)
- Thoroughly flush all components with high-pressure clean water
- Air blow drying or natural air-drying after flushing
4.2 Standard Process Parameters
- Working Concentration: Use pure stock solution without dilution
- Working Temperature: Normal ambient temperature (no heating required, energy-saving)
- Reaction Time: 2–5 mins
- Post-Cleaning Treatment: Complete water rinsing → air drying → equipment reassembly
4.3 Operation & Tank Liquid Notes
- Operators must wear protective uniforms, acid & alkali resistant rubber gloves and safety shoes to avoid long-time skin contact
- Avoid mixing with strong acid and strong oxidizer chemicals during storage and use
- Waste liquid cannot be directly discharged; conduct factory sewage pretreatment to meet emission standards or entrust qualified environmental agencies for centralized disposal
5. Test Standard (Industry & Environmental Compliance Testing Criteria)
- Rail Transit Metal Corrosion Standard: Q/CR468-2015 (Passed metal corrosion test for aluminum and stainless steel substrates)
- National Detergency Test Standard: GB/T 23436, GB/T 35759
- Environmental Compliance Standard: RoHS 10 restricted substance test, free of heavy metals, nitrite and chromate
- Physical Stability Test Standard: High & low temperature stability test (60℃ 6h / -5℃ 24h), no stratification
- Rinsing Residue Standard: No visible chemical residue after high-pressure water flushing
- EU Hazard Classification Standard: CLP Regulation (EC) No 1272/2008, non-dangerous goods certification
- Wastewater Discharge Standard: Local industrial sewage discharge regulations, biodegradable components reduce wastewater treatment burden
6. Result (Actual Cleaning & Economic Performance Test Outcomes)
- Ultra-Strong Detergency: Standard detergency ≥90%; test actual cleaning efficiency reaches 85.44%, completely removes oxide, oil and scale in one spray-flush cycle
- Low-Foam Water-Saving Formula: Foam height only 5mm, greatly simplifies rinsing steps; cuts water consumption by over 50% compared with traditional high-foam cleaners, realizing water conservation
- Significant Energy-Saving Effect: After thorough dirt removal, air conditioner heat dissipation efficiency rises more than 30%, train power consumption reduces by 10%, cutting long-term energy expenditure for rail transit operators
- Multi-Material Anti-Corrosion Protection: Built-in dedicated aluminum protective agent; no corrosion, discoloration or pitting on aluminum fins, stainless steel shells and rubber sealing parts, prolonging air conditioning equipment service life
- Stable Wide Temperature Adaptability: Remains uniform liquid without stratification under -5℃ low temperature and 60℃ high temperature, stable performance in all seasons of rail transit maintenance workshops
- Eco-Friendly & Safe Operation: No toxic restricted substances, non-flammable, low skin irritation risk under standardized operation; fully meets rail transit environmental management requirements
- Simplified Maintenance Workflow: Normal-temperature stock liquid spraying process eliminates heating, soaking and repeated scrubbing steps, shortens vehicle maintenance downtime and reduces labor input
7. Buyer Takeaway (Core Value for Rail Transit Operators & Maintenance Factories)
- Exclusive Rail Transit Custom Formula: Specially developed for high-speed rail, subway, light rail and ordinary passenger train air conditioning systems, compatible with aluminum fins, stainless steel and rubber parts, one product covers all air conditioning component cleaning demands
- Dual Water & Energy Saving, Lower Operating Costs: 50%+ water saving and 10% power consumption reduction, continuously cutting daily water and electricity operation costs for vehicle depots
- Full Compliance with Industry & Global Environmental Standards: Passed Q/CR468-2015 rail standard and RoHS testing, no hazardous heavy metals/nitrite, eliminating compliance inspection risks for rail transit projects
- Extend Air Conditioning Service Life: Anti-corrosion aluminum protection formula prevents fin oxidation and rubber aging, reduces equipment replacement and maintenance frequency
- Low Labor & Time Cost: Simple spraying process without heating or dilution, shortens single-unit cleaning time and improves maintenance workshop throughput
- Stable Long-Term Storage & Complete Supply Specifications: 25kg / 200kg sealed plastic drums; 2-year shelf life under cool, dry and ventilated sealed storage; standardized transportation with anti-sun, anti-rain and anti-high temperature rules
- Low Wastewater Treatment Cost: Environmentally friendly formula with low ecological hazard, reduces processing pressure of factory sewage treatment equipment and lowers environmental management expenses all year round
MSDS Safety Operation Guidance (For Purchaser Safety Management)
- Skin Contact Emergency: Take off contaminated clothes, rinse skin with plenty of clean water for 5 minutes; seek medical help if persistent discomfort occurs
- Eye Splash Emergency: Flush eyes with clean water for 5 minutes, remove contact lenses before washing; consult doctors if pain or redness persists
- Fire Fighting Instruction: Non-combustible product; use foam or CO₂ fire extinguishers for burning plastic packaging; forbid 1211 fire extinguishers
- Storage Restriction: Strictly seal bucket lids, store separately from strong acid and strong oxidizers, avoid direct sunlight and high-temperature environment
Storage & Transportation Specification
- Packaging: 25kg plastic drum, 200kg plastic drum
- Shelf Life: 2 years under sealed, cool, dry and ventilated storage conditions
- Transportation Rules: Light load & unload to avoid package damage; shield from direct sunlight, rain and high temperature during transit
- Waste Package Disposal: Process empty packaging barrels in accordance with local national environmental regulations, prohibit random stacking and dumping
