Bangalore Metro Rail Corporation Limited (BMRCL) operates India’s second-largest metro network. The 43 km Purple Line alone carries 650,000 riders a day through 33 stations, many of which are 18–24 m below grade.
- Platforms are 220 m long, polished granite with 1.2 mm grout lines—high heels and cooking oil leave black trails within minutes
- Trains run 05:00–23:30; the only cleaning window is 00:30–04:00, when ambient humidity > 85 % and night-time noise must stay ≤ 68 dB(A)
- A single slip during peak hours can delay 37 trains; BMRCL’s FY-2024 KPI sets “zero passenger slips” as a core target
Pain Points
Extreme humidity = permanently wet look
- Traditional mop + wringer buckets leave 3 mL/m² of residual water; granite turns into a mirror of trapped moisture
- Station staff had to deploy 18 “Caution: Wet Floor” cones per shift—an eyesore for commuters
Deep-level logistics nightmare
- Service lifts are only 1.1 m wide; most ride-on machines cannot enter
- Although the old 70 L walk-behind scrubber carried more water, its 110 kg dry weight and low handle require two people to manoeuvre in and out of lifts, wasting an average of 20 minutes per cross-floor refill and eating up the precious cleaning window
Train-resume deadline
- Last train clears the platform at 23:35; first sweep train departs 04:15 → total window 270 min
- Any industrial cleaning machine must finish 9,200 m² of platform + concourse in < 240 min, including set-up and lift-queue time
Solution: GIYO X850 Walk-Behind Floor Scrubber
After a two-week side-by-side test, BMRCL placed 14 GIYO X850 walk-behind units on the Purple Line, one operator covering two adjacent stations.
| Key Index | X850 Record | BMRCL Requirement |
|---|---|---|
| Cleaning Width | 850 mm (twin-brush) | ≥ 800 mm |
| Productivity | 2,800 m²/h | ≥ 2,500 m²/h |
| Runtime | 4 h (24 V 220 Ah) | ≥ 3.5 h |
| Sound Level | 65 dB(A) | ≤ 68 dB(A) |
| Lift-passing Width | 630 mm (chassis) | ≤ 1,100 mm (lift door) |
| Brush Pressure | 4.15 MPa | > 3 MPa (grease cutting) |
Core Highlights
Slim-body twin-brush – 15 in × 2 poly-propylene bristles remove shoe-scuff and cooking-oil films in one pass
Parabolic squeegee – 1,000 mm curved blade recovers 0.4 mL/m² residue, eliminating “wet-floor” cones
Silent-drive – 24 V brushless traction motor; operators can work while station announcements continue
Snap-swap battery – side-exit drawer allows 15-second battery change; spare pack charges in the equipment room
Corrosion-proof – IPX4 rotomoulded tank and stainless squeegee frames resist 85 % humidity and alkaline granite cleaners
IoT ready – optional 4G card uploads runtime, water level and location to BMRCL’s CMMS dashboard for digital dispatch
Roll-Out Timeline
| Week | Milestone |
|---|---|
| 1 | Site survey & risk assessment; lift-dimension check |
| 2 | 14 X850 delivered; 28 night-shift cleaners certified |
| 3 | Pilot covers 8 stations; baseline KPI logged |
| 4 | Full deployment—Purple Line 33 stations under new SOP |
Results & Benefits
Productivity leap
- Cleaning speed ↑ from 1,800 m²/h (mop team) to 2,800 m²/h per operator
- Average 220 m platform + concourse finished in 52 min vs. 98 min before
Safety & compliance
- Zero passenger slip incidents in first six months
- Station noise audit: 65 dB(A) max, 3 dB below contract limit
Financial impact
- Labour hours cut by 36 %, saving INR 21 million (≈ US $260 k) per year across 14 stations
- ROI achieved in 9.8 months
Passenger experience
- Customer-survey score for “station cleanliness” rose 24 % to 4.6/5
- Social-media posts praising “mirror-finish platforms” exceeded 12,000 tags in three months
Environmental contribution
- Chemical dosage ↓ 32 %, water use ↓ 27 %, cutting 1,450 t wastewater annually
- BMRCL included the project in its 2024 ESG report as a “water-positive” initiative
Station Manager Voice
“The X850 glides through our 1.1 m lift like a suitcase, and the platform is dry before the last cleaner clocks out. No cones, no complaints—just shiny granite and on-time train departures.”
— Rajesh Kumar, Purple Line Station Controller
Conclusion
Deep-Down Clean at 24 m Below Ground delivers commercial floor cleaner and industrial cleaning machine solutions to airports, metros, malls and hospitals in 60+ countries. Whether you need a compact floor scrubber or a high-productivity tile floor scrubber machine, GIYO pairs low noise with IoT-ready performance to keep your floors—and your reputation—spotless.
GIYO—Engineered for a cleaner world.
Contact us today and discover what the right walk-behind floor scrubber can do for your facility!
