Description
1. Unboxing & Physical Snapshot
- Model & Brand: HIMA (HIMA Paul Hildebrandt GmbH) 19-Inch Rack Circulation Fan Module — Part Number / Order Code: K9203A (
996920360) - Physical Dimensions: Standard 19-inch rack width, 1 RU height profile (Approximately 483 mm W × 44.5 mm H × 215 mm D)
- Estimated Shipping Weight: Approximately 2.5 kg net (Packaged securely in custom anti-static foam containment and heavy corrugated transport carton)
- What’s in the Box: HIMA K9203A circulation fan unit, pluggable power connector blocks, dual-monitoring signal headers, and manufacturer compliance/data sheet insert.
2. Product Introduction
Structure B (Architecture hook): Engineered specifically for high-availability Safety Instrumented Systems (SIS), this 19-inch rack-mounted circulation fan module slides directly above base or extension racks in HIMA H41q and H51q safety subrack cabinets. Within critical emergency shutdown architectures, the unit delivers forced-air ventilation to maintain strict thermal equilibrium across redundant processor and I/O modules, preventing premature component wear during continuous plant operations.
Housed in a ruggedized, anodized aluminum chassis, the assembly houses three precision axial fans operating in tandem to pull ambient air from the cabinet bottom and exhaust it upward. Its built-in diagnostic circuitry actively tracks fan speed drop-off and supply voltage fluctuations, feeding real-time hardware status alarms directly back to the safety system logic framework.
3. Core Technical Specifications
| Parameter | Value |
| Component Type | 19-Inch Rack Circulation Fan / Forced-Air Ventilation Unit |
| Product Compatibility | HIMA H41q / H51q Safety Instrumented Systems (SIS) Subracks |
| Fan Configuration | Three (3) integrated axial fans in tandem |
| Input Voltage Range | 24 VDC nominal (-15% to +20%, i.e., 20.4 to 28.8 VDC) |
| Maximum Current Draw | 750 mA |
| Airflow Capacity | Approximately 300 m³/h (Bottom intake, top exhaust layout) |
| Rack Footprint | 19-inch rack format, 1 RU height profile |
| Operating Temperature Range | 0°C to +55°C continuous industrial safety threshold |
| Physical Net Weight | Approximately 2.0 kg |
4. Global Compliance & Industry Certifications
Type-test documentation and rigorous safety validation standards are mandatory for auxiliary hardware deployed within safety-instrumented control cabinets.
- Expected Certifications: TÜV certification for safety-related applications, CE Mark (EMC and Low Voltage Directives), and RoHS compliance.
- Safety Relevance: Although an auxiliary cooling component, its integrated fault-monitoring relay contacts interface directly with safety loop alarm routines, ensuring operators are instantly alerted if cabinet cooling capacity degrades below safe thresholds.
- Audit Note: Cross-verify power supply terminal connections and fault signal wiring against your HIMA cabinet layout wiring diagrams prior to system commissioning.
5. Long-Term Storage & Asset Preservation Guide
Veteran Maintenance Note: Storing electromechanical cooling fans in inventory requires protection against bearing grease drying and dust accumulation on fan blades over multi-year holding periods.
- Environmental Baseline: Store the fan unit in a clean, dry location maintaining ambient temperatures between -10°C and +40°C with relative humidity below 50% non-condensing.
- Mechanical Care: Keep the unit protected in its original packaging to prevent physical bending of the anodized aluminum housing or damage to the external terminal connectors.
- Periodic Check: For long-term stock items exceeding three years, manual shaft rotation checks or pre-installation functional tests are recommended to verify bearing smoothness.
6. Physical Installation Prerequisites
- Ensure the control cabinet power bus is de-energized before mounting the fan unit into the designated 1 RU space directly above the HIMA base or extension rack.
- Connect the primary 24 VDC supply and redundant backup power lines securely to the rear terminal block to maintain uninterrupted ventilation continuity.
- Wire the integrated fault-monitoring outputs to your system diagnostic input cards to ensure live tracking of fan performance status.
7. Buyer’s FAQ (Logistics & Compliance Focus)
- What Harmonized System (HS) code governs international customs clearance?The standard global export classification for this industrial ventilation fan module is 8414.59.6590 (Axial fans for industrial equipment applications).
- How does Country of Origin (COO) verification impact compliance audits?Accurate origin tagging on shipping documentation ensures compliance with regional trade regulations; inspect the factory label (manufactured in Germany) for complete traceability.
- Does this unit support redundant power connections?Yes, it features provisions for a backup power source connection, allowing seamless switchover if the primary 24 VDC line experiences an interruption.
- What level of transit insurance should be specified?Always mandate fully declared-value, tracked air transit insurance to protect against physical frame denting or bearing shock during transport.
