1. Giriş
The SILENT KNIGHT Siemens OP921 Photoelectric Smoke Detector is designed for reliable smoke detection in various environments. It incorporates state-of-the-art microcontroller circuitry and surface-mount technology to ensure maximum reliability and performance. This device utilizes an optical sensor based on a light-scattering detection principle, coupled with advanced software algorithms to analyze signals, providing highly stable and accurate smoke detection. The OP921 also features microprocessor circuitry with error checking, detector self-diagnostics, and supervision programs for enhanced safety and operational integrity.
2. Güvenlik Bilgileri
- Tüm talimatları okuyunuz: Before installation and operation, carefully read and understand all instructions provided in this manual.
- Doğru yerleştirme: Install the smoke detector in accordance with local codes and standards, and manufacturer recommendations. Avoid placing near sources of combustion, high humidity, or excessive airflow.
- Düzenli testler: Test the smoke detector regularly (e.g., monthly) to ensure proper operation.
- Pil değişimi: Replace batteries promptly when a low battery signal is indicated. Use only specified battery types.
- Bakım: Keep the detector clean and free from dust and debris. Do not paint the detector.
- Profesyonel kurulum: For complex systems or commercial applications, professional installation is recommended.
3. Paket İçeriği
Paketi açtığınızda tüm ürünlerin eksiksiz ve hasarsız olduğundan emin olun.
- 1 x SILENT KNIGHT Siemens OP921 Photoelectric Smoke Detector unit
- Montaj donanımı (vidalar, dübeller)
- Kullanıcı Kılavuzu

Figure 3.1: SILENT KNIGHT Siemens OP921 Photoelectric Smoke Detector, front view in packaging.

Figure 3.2: SILENT KNIGHT Siemens OP921 Photoelectric Smoke Detector in packaging with product label showing model number and UL listing.
4. Kurulum ve Kurulum
The OP921 is a battery-powered device. Follow these general steps for installation:
- Konum seç: Select a suitable location on the ceiling or wall, away from corners, vents, and obstructions. Refer to local fire safety codes for specific placement guidelines.
- Montaj Tabanı: Secure the mounting base to the chosen location using the provided screws and anchors. Ensure the base is firmly attached.
- Pilleri Takın: Open the battery compartment and insert the specified batteries, observing correct polarity. Close the compartment securely.
- Dedektör Takma: Align the smoke detector unit with the mounting base and twist clockwise until it locks into place.
- Test Ünitesi: Press and hold the test button on the detector. The alarm should sound, and any visual indicators should activate. Release the button to silence the alarm.
Note: For detailed wiring instructions in a system context, consult the specific system's installation manual or a qualified technician.
5. Operasyon
Once installed and powered, the OP921 continuously monitors the air for the presence of smoke particles. Its photoelectric sensing chamber detects visible smoke produced by smoldering fires.
- Normal Çalışma: The detector will typically have a small LED indicator that flashes periodically (e.g., every 30-60 seconds) to confirm it is functioning correctly.
- Alarm Durumu: When smoke is detected above a predetermined threshold, the detector will activate its alarm. This includes a loud audible signal and a visual alarm (e.g., a rapidly flashing LED).
- Kendi Kendine Teşhis: The built-in microprocessor continuously performs self-diagnostics to ensure internal components are working correctly. Any detected faults may trigger a specific trouble signal (e.g., a different LED flash pattern or chirp).
- Test Düğmesi: Pressing the test button simulates a smoke condition and activates the alarm, allowing you to verify the detector's functionality.
6. Bakım
Düzenli bakım, duman dedektörünüzün uzun ömürlü ve güvenilir olmasını sağlar.
- Aylık Test: Press the test button monthly to ensure the alarm sounds. If it does not, replace the batteries or troubleshoot as necessary.
- Pil Değişimi: When the detector indicates a low battery (e.g., a chirp every 30-60 seconds, or a specific LED pattern), replace all batteries immediately with new ones of the specified type.
- Temizlik: At least once a year, gently vacuum the exterior of the detector, especially around the sensing chamber openings, using a soft brush attachment. This removes dust and cobwebs that can interfere with detection. Do not use cleaning sprays or solvents.
- Boyamayın: Painting the detector can block the sensing chamber and prevent it from detecting smoke.
7. Sorun Giderme
| Sorun | Olası Neden | Çözüm |
|---|---|---|
| Dedektör test sırasında alarm vermiyor. | Dead or weak batteries; incorrect battery installation; faulty unit. | Replace batteries; check battery polarity; if problem persists, replace unit. |
| Dedektör periyodik olarak bip sesi çıkarır. | Düşük pil uyarısı. | Pilleri hemen değiştirin. |
| Yanlış alarmlar. | Algılama haznesinde toz veya döküntü; yüksek nem; yemek dumanı; buhar. | Clean the detector; relocate if frequently exposed to steam or fumes; ensure proper ventilation. |
| Alarm sounds continuously without smoke. | Excessive dust; insect infestation; faulty unit. | Clean the detector thoroughly; if problem persists, replace unit. |
8. Özellikler
- Marka: SESSİZ ŞÖVALYE
- Modeli: OP921
- Üretici: AHST
- Güç Kaynağı: Pil ile çalışır
- Sensör Tipi: Optical, Photoelectric
- Alarm Türü: Görsel ve İşitsel
- UPC: 808237794811
- ASIN: B0B75MHGWH
- İlk Kullanılabilirlik Tarihi: 29 Aralık 2019
9. Garanti Bilgileri
Warranty information for the SILENT KNIGHT Siemens OP921 Photoelectric Smoke Detector is not explicitly specified in the provided product details. Please refer to the product packaging or contact the manufacturer/seller directly for warranty terms and conditions.
10. Destek
For technical support, troubleshooting assistance beyond this manual, or inquiries regarding your SILENT KNIGHT Siemens OP921 Photoelectric Smoke Detector, please contact the manufacturer or your authorized dealer. Specific contact details are not provided in the product information.





