Real Cooling Case: Two Sets of Lanchang 3HP Commercial Air Conditioners with PVC Ducts for Fixed Workers in a Polishing Factory, Foshan

Factory Overview

This hardware polishing factory is located in Foshan. Its 38-square-meter polishing workshop is dedicated to polishing and grinding metal hardware, with four fixed polishing stations for four full-time workers. Foshan features subtropical hot summers. Continuous operation of polishing machines generates massive mechanical heat, and the high-temperature metal workpieces plus poor ventilation create an extremely sweltering working environment. The polishing process produces large amounts of metal dust, which easily clogs and damages ordinary air ducts. Previously, the factory only used industrial fans that failed to cool down workers, causing frequent heat discomfort and resignation. The factory purchased two Lanchang 3HP commercial air conditioners with PVC ventilation ducts to deliver targeted cool air to four fixed stations, achieving remarkable cooling results recognized by all workers.

Real Pain Points & Core Demands

1. Extreme heat at polishing stations leads to severe labor turnover Workshop temperature can hit over 43℃ in summer. Constant heat from grinders and hot metal workpieces creates scorching air around operators. Long-hour work under high temperature causes dizziness and heat fatigue. Labor shortage in peak seasons severely delays production schedules.
2. Industrial fans only circulate hot air without effective cooling Multiple big industrial fans were installed before, yet they merely move hot air instead of lowering ambient temperature, worsening working experience and dragging down production efficiency.
3. Metal dust corrodes and clogs traditional air ducts Fine metal dust generated during polishing rusts iron ducts and leaves hard-to-clean dirt. The factory required lightweight, corrosion-resistant ducts with easy daily maintenance.
4. Key requirements: Targeted cooling only for four fixed polishing stations instead of full-space cooling; high-temperature resistant units to withstand mechanical heat; dust-proof and anti-rust ducts; dual independent units for energy-saving separate control; local after-sales service in Foshan to avoid production halt during maintenance.

On-site Survey & Customized Dual-unit PVC Duct Cooling Solution

Lanchang technicians inspected station layout, heat sources and dust conditions, and designed a targeted cooling system with two 3HP air conditioners and PVC ventilation ducts:

1. Dual-unit layout with flame-retardant PVC directional air ducts One Lanchang 3HP unit is placed on each side of the workshop for balanced cooling. Thickened flame-retardant PVC pipes are adopted as ventilation ducts. The smooth inner surface of PVC prevents metal dust adhesion and features moisture-proof, rust-proof, easy-disassembly advantages. Each unit connects two separate PVC ducts, with air outlets set 1.6 meters above stations, sending cool wind straight to workers’ upper bodies. Ducts avoid concentrated flying dust areas to reduce dust intake inside the units.
2. Units customized for high-temperature industrial workshops Equipped with industrial T3 high-temperature resistant compressors, the air conditioners run stably under 45℃ workshop environment. Multi-layer dust filter screens block metal grinding dust to extend unit service life. Thickened metal outer casing resists vibration and persistent workshop heat.
3. Independent variable frequency control for flexible energy saving The two units work independently. Only one unit can be turned on when fewer workers are on duty, cutting monthly power consumption by around 20% compared with full-space central air conditioning.
4. Localized after-sales service in Foshan Service outlets cover all districts of Foshan. Each unit enjoys a 3-year whole-machine warranty and a 5-year warranty for core components. On-site maintenance is available within 4 hours on workdays, scheduled during factory downtime without delaying production orders.

Practical Operation Effects After Installation

Test data shows the temperature of all four polishing stations stays steadily at 25-27℃, eliminating scorching heat near grinders. Dust on PVC ducts can be wiped off effortlessly without clogging pipelines. Heat-induced discomfort of workers is fully resolved, staff turnover drops sharply, and polishing efficiency rises by 16%. Low-cost, durable and easy-to-clean PVC ducts cut the factory’s annual operation and maintenance cost by 82%. The factory manager highly approves this dual 3HP unit + PVC duct targeted cooling scheme and plans to adopt the same equipment for its newly expanded polishing workshop.