Nokia 1830PSS 16FAN2 Fan Unit (3KC48990AB)

The Nokia 3KC48990AB (also known as 16FAN2) is a high‑performance fan unit designed for the 1830 PSS (Photonic Service Switch) optical transport platform. This cooling module provides forced‑air ventilation to maintain optimal operating temperatures for optical modules, line cards, and power supplies within the chassis. Its variable‑speed fans adjust airflow based on thermal demand, balancing cooling efficiency and acoustic noise.

Overview

The 16FAN2 fan unit is a field‑replaceable module that installs into dedicated fan bays of the 1830 PSS chassis. It features multiple high‑quality fans with redundant elements to ensure continued cooling even if one fan fails. The module communicates with the chassis management controller to report fan speed, status, and fault conditions. It is hot‑swappable, allowing replacement without powering down the system.

Key Features

• High‑airflow capacity for dense optical chassis

• Variable speed fans with temperature‑based control

• Hot‑swappable for in‑service maintenance

• Redundant fan elements within the module

• LED indicators for power, operation, and fault

• Management via chassis controller (SNMP)

Technical Specifications

• Airflow: > 150 CFM (typical)

• Fan Speed: 6,000‑10,000 RPM (variable)

• Power Consumption: 35 W typical

• Voltage: +12 VDC from backplane

• Acoustic Noise: < 60 dBA at full speed

• MTBF: > 120,000 hours

• Operating Temperature Range: 0°C to 45°C (ambient)

• Dimensions: Standard 1830 PSS fan slot

Applications

This fan unit is essential for 1830 PSS systems deployed in data centers, central offices, and telecom shelters, ensuring thermal management for dense optical networking equipment.

Management and Monitoring

The module provides real‑time status via the chassis management bus. Administrators can monitor fan speed, temperature, and health through the 1830 PSS management interface.

Installation and Maintenance

Slide the module into the fan bay until it locks, and secure with screws. The module automatically powers up. Maintenance includes cleaning air intakes and replacing the module if a fan fault occurs.

Conclusion

The Nokia 3KC48990AB 16FAN2 fan unit delivers robust, intelligent cooling for the 1830 PSS platform, ensuring reliable operation of critical optical networking infrastructure.