Description
Otis Pit Overhaul Box XAA23750M3 Brief Introduction
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Product Name |
Otis Pit Overhaul Box |
| Model Number |
XAA23750M3 |
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Quality
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Original.Brand New
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Payment
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T/T. Paypal. Western Union
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Delivery
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3-5 Working Days
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Packaging
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Packed by carton
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Otis Pit Overhaul Box XAA23750M3 – Complete Pit-Modernisation Kit for Safer, Faster Maintenance | Nanjing Zhuye Elevator Parts
Pit work is the dirtiest, wettest and most time-consuming part of any elevator overhaul. The Otis XAA23750M3 pit overhaul box turns that nightmare into a one-day job. Shipped as a single SKU, it contains the GECB-AP CPU adapter, SIL-3 brake module, 24 V power supply, IP65 junction box, pre-wired harnesses and stainless mounting frame—everything needed to modernise a Gen2® or 4200 machine from the buffer up. When the box arrives, the car is back in service the next day; when it’s missing, mechanics spend weeks hunting parts. Nanjing Zhuye Elevator Parts keeps genuine XAA23750M3 kits in stock, ready for next-day despatch worldwide—helping you restore pit integrity without costly OEM delays.
Product snapshot
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Otis part number XAA23750M3, hardware rev. M3, firmware bundle PIT-22.5
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Pre-loaded GECB-AP adapter, SIL-3 brake board, 24 V 10 A power supply, IP65 junction box
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Stainless frame 400 × 300 × 150 mm, rubber gasket, M12 mounting studs, earth bar included
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Pre-wired harnesses: brake, encoder, safety gear, buffer switch, lighting (10 m PUR)
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IP65 on all entries, UV-stable, −25 °C to +70 °C, 15-year design life
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CE, UL, RoHS, REACH and Otis QES 2024 approved
Where it works
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Gen2® Life, Gen2® Switch, 4200/5200 geared and gearless machines up to 4 m/s, 1 600 kg
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Machine-room-less (MRL) or machine-room (MR) pits with oil, water or dust contamination
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Modernisation packages replacing obsolete LCE or relay-based pit stations
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Any controller needing SIL-3 brake control and IP65 pit wiring
Installation method – 4-hour turnkey swap
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Place lift on inspection mode; stop at top landing; switch OFF main breaker; lock & tag.
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Pump out pit water; clean oil; measure insulation > 1 MΩ on old cables.
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Remove obsolete pit station; photograph wiring for reference.
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Mount stainless frame on existing M12 studs; torque 50 Nm.
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Connect pre-wired harnesses: brake (red/blue), encoder (8-pin), safety gear (NC), buffer switch, lighting.
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Connect primary 400 V L1/L2/L3, earth 10 mm², 24 V DC output.
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Power up; green “PIT” LED must illuminate within 3 s, brake board self-tests.
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Launch Otis Pit Tool (OPT-22.5) on laptop; auto-detects brake current, encoder index, safety-chain loop.
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Run 10 full-speed cycles; verify brake lift-off current within ±5 %, safety-chain drop < 5 ms.
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Seal all glands; apply torque-stripe paint; log serial number and test date in maintenance book.
Replacement cycle & preventive maintenance
Otis bulletin SB-PIT-2024-05 recommends:
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Visual inspection every 6 months: check for water ingress, loose glands, LED status.
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Brake current test every 12 months: lift-off within ±5 % of baseline.
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Replace entire pit box every 15 years or 500 000 cycles, whichever comes first.
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Immediate replacement if:
– IP65 rating compromised (cracked gasket, rust inside),
– brake board “FAULT” LED red,
– insulation < 1 MΩ between 400 V and 24 V,
– frame corrosion > 1 mm depth.
Pro tip: 70 % of premature failures are traced to loose glands—re-torque to 1.5 Nm every year.
Maintenance tips from Nanjing Zhuye Elevator Parts
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Always pump pit dry before opening box; water kills IP65 in minutes.
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Never drill additional holes; use supplied M12 studs only.
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Keep a spare XAA23750M3 in every high-rise store; at 12 kg it saves a week of parts-chasing.
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After heavy rain, run 5 cycles and check internal humidity < 60 % on data-logger.
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Order the “Pit Bundle” (box + frame + harness + torque tool) from Nanjing Zhuye Elevator Parts to eliminate parts hunting and ensure matched components.
Why buy from Nanjing Zhuye Elevator Parts?
We are an Otis-authorised distributor, importing XAA23750M3 directly from the Czech factory, vacuum-testing IP65 on every gland and shipping with a 24-month replacement warranty. Stock is stored in humidity-controlled bins to prevent gasket ageing. Orders placed before 15:00 China time leave the same evening via DHL Express, arriving Europe or North America in 2–4 days. Bulk pricing starts at three kits; we can pre-load site-specific parameters and include a loaner pit box to keep your lifts modernising during the swap.
Conclusion
The XAA23750M3 pit overhaul box is the silent upgrade that turns a muddy pit into a clean, safe, future-ready machine room. By installing the genuine kit, following the torque schedule and replacing it before gaskets crack, you ensure SIL-3 safety, IP65 integrity and zero surprise stops. Stock genuine XAA23750M3 from Nanjing Zhuye Elevator Parts today—because when the pit fails, the whole lift fails.
