Description
1. At-A-Glance Executive Brief
- Model: K9203 (Part No. 996920302)
- Brand: HIMA
- Part Type: Circulation Fan Drawer / 19-Inch Rack Cooling Unit
- Lifecycle Status: Mature / Discontinued
- System Compatibility: HIMA H41q, H51q, and Safety Control Enclosures
- Core Protocol: Hardwired 24V DC Supply with Integrated Run Monitoring
2. Technical Introduction
- Problem-Agitation-Solution: Thermal accumulation inside enclosed industrial cabinets housing high-density safety processors leads to component degradation, thermal tripping, and costly unscheduled process downtime. Restoring correct forced-air dynamics without rewiring cabinet distribution infrastructure requires an exact drop-in ventilation replacement. The HIMA K9203 is a 19-inch, 1U-high circulation fan drawer equipped with three integrated axial fans designed to pull air upward across legacy safety subracks. Operating on a nominal 24V DC input, the unit features built-in operation and voltage monitoring to alert the control system immediately if fan speed drops below acceptable performance thresholds.
Engineer’s Takeaway: Upgrading or replacing your enclosure ventilation with the OEM K9203 drawer re-establishes optimal thermal management, protecting legacy HIMA processor racks from heat-induced hardware faults.
3. Core Technical Specifications
| Parameter | Value |
| Manufacturer | HIMA |
| Product Family | H41q / H51q System Accessories |
| Module Type | Circulation Fan Drawer / Rack Ventilation Unit |
| Operating Voltage | 24 VDC (-15% to +20%, ripple \le 15\%) |
| Current Consumption | Max. 750 mA |
| Airflow Volume | 300 m^3 per hour |
| Fan Configuration | 3 integrated axial fans (Rated Speed: 2800 RPM) |
| Form Factor | 19-inch rack mount, 1U height, depth 215 mm |
| Module Weight | Approx. 1.8 kg |
4. Field Engineer’s Tech Notes
- Fan Monitoring Relay and Alarm Integration: Ensure the internal run-monitoring signal lines are correctly wired back to your digital input cards or alarm annunciation loop. Ignoring the integrated rotation monitoring feedback prevents the control system from detecting a stalled fan rotor, leaving the rack vulnerable to silent thermal overload.
- Cabinet Airflow Path Clearance: Avoid blocking the intake zones underneath the fan drawer or placing dense cable bundles directly over the exhaust ports. The K9203 relies on an unobstructed vertical air channel to draw air from the lower cabinet sections; restricted paths create hot spots around high-draw power supplies and central processing modules.
5. Adaptive QA & Testing Protocol
Before dispatch, this K9203 fan drawer undergoes operational bench testing under a regulated 24V DC supply. Technicians verify individual motor bearing smoothness, rotational speed across all three axial fans, and volumetric output consistency. The internal run-monitoring and voltage fault relay contacts are continuity-tested to guarantee correct switching states under alarm conditions. Complete test logs and video verification are available upon request prior to shipment.
6. Buyer’s FAQ
- What warranty is provided with this cooling unit?All New Surplus and fully bench-tested refurbished HIMA hardware components include a standard 12-month operational warranty from the date of purchase.
- Is this part supplied as New Surplus or Refurbished?Inventory stock varies between factory-sealed New Surplus (NSFP) and fully reconditioned, cleaned, and tested hardware. Contact our sales desk to verify the exact condition of current stock.
- What is the typical shipping lead time for urgent plant needs?In-stock fan modules ship same-day from our primary warehouse, ensuring expedited transit to support critical maintenance turnarounds and emergency replacements.
