Description

Elevator Power Board CWT15-5FF/TE – Usage, Replacement Cycle & Maintenance Guide
By Nanjing Zhuye Elevatorparts

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Introduction
The CWT15-5FF/TE elevator power board is a high-efficiency switch-mode supply designed to deliver stable 15 V @ 5 A for elevator control systems, door operators, and safety circuits. Manufactured and distributed worldwide by Nanjing Zhuye Elevatorparts, this IP20-rated unit meets EN 81-20/50, ASME A17.1 and UL standards, ensuring reliable operation and minimal downtime. This 800-word guide covers correct installation, daily operation, and the recommended replacement cycle to keep every elevator running safely and efficiently.

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1. Product Highlights
– Output: 15 V DC @ 5 A, 75 W continuous
– Input: 100–240 V AC, 50/60 Hz, <1 A
– Efficiency: 92 %, <30 mV ripple
– Protection: OVP, OCP, SCP, OTP
– Rating: IP20, –10 °C to +70 °C
– Life: 50,000 h @ 40 °C, 70 % load

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2. Installation Method
Step 1 – Preparation
De-energise the control cabinet; lock-out/tag-out and verify zero energy. Record serial number and date code.

Step 2 – Mounting
Position board on DIN rail or back-panel, 100 mm clearance for airflow. Use M4 screws (torque 1.2 N·m); ensure earth connection ≥2.5 mm².

Step 3 – Wiring
– Input: L/N/PE via 10 A breaker
– Output: 15 V DC to control bus (5 A max)
– Remote: Optional inhibit signal (5 V logic)
Maintain 50 mm separation from power cables.

Step 4 – Commissioning
Power-up; LED green. Measure output (15 V ±0.2 V), ripple (<30 mV). Log settings and date.

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3. Daily & Preventive Maintenance
Daily (Technician)
Visual check – LED green, no audible noise, temperature <70 °C.

Monthly
Clean IP20 grille; check M4 screws tight. Measure 15 V rail (±0.2 V).

Quarterly
Download fault log; check ripple (<30 mV). Cycle remote inhibit 50×.

Annually
Replace fan every 5 years. Full load test at 150 % rated current for 10 s.

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4. Replacement Cycle & Indicators
| Duty Cycle | Replace Every | Hours | Warning Signs |
| Standard residential | 7–8 years | 50k | LED amber, >70 °C case |
| Commercial / hospital | 5–6 years | 35k | Ripple >50 mV, >6 A draw |
| High-speed / outdoor | 3–4 years | 25k | Fan failure, IP20 failure |

Replace immediately if:
– Output drift >0.5 V or ripple >50 mV
– Repeated “power fault” alarms
– Physical damage or water ingress (IP20 compromised)

Maintain one spare CWT15-5FF/TE per 25 power boards for <4-hour response.

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5. Why Choose Nanjing Zhuye Elevatorparts?
• Full traceability – laser-etched serial & QR code
• Same-day global dispatch via DHL/FedEx Express
• 24/7 multilingual hotline and on-site training
• Competitive tiered pricing and custom voltages for OEM projects

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6. Conclusion
The CWT15-5FF/TE power board is the “heartbeat” of every elevator control system. By following the installation, testing, and replacement guidelines—and sourcing only from Nanjing Zhuye Elevatorparts—you guarantee code compliance, reduce downtime, and ensure every elevator stops exactly where it should.