pengenalan
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Litetronics 77940 PRT240 Indoor Square Flat Panel LED Fixture. Please read this manual thoroughly before installation and retain it for future reference. This fixture is designed for indoor commercial lighting applications, offering adjustable wattage and dimming capabilities.
Maklumat Keselamatan
Always follow basic safety precautions when installing and maintaining electrical equipment. Failure to do so may result in serious injury or property damage.
- AMARAN: Risiko renjatan elektrik. Putuskan sambungan kuasa pada fius atau pemutus litar sebelum pemasangan atau servis.
- Installation must be performed by a qualified electrician in accordance with all applicable national and local electrical codes.
- Pastikan bekalan voltage is compatible with the fixture's requirements (120/277 volt).
- Do not handle energized fixtures with wet hands or while standing on wet or damp permukaan.
- Do not modify the fixture in any way. Any modifications will void the warranty and may create a safety hazard.
- Keep flammable materials away from the fixture during operation.
Kandungan Pakej
Sahkan bahawa semua komponen ada dan tidak rosak sebelum memulakan pemasangan.
- Litetronics 77940 PRT240 LED Flat Panel Fixture
- Panduan Pemasangan (manual ini)
- Mounting Hardware (e.g., clips, screws, wires - specific to mounting type)
Persediaan (Pemasangan)
The Litetronics 77940 PRT240 fixture is designed for easy installation in standard 2'x2' grid ceilings. Consult a qualified electrician if you are unsure about any steps.

Satu overhed view of the Litetronics 77940 PRT240 Indoor Square Flat Panel LED Fixture, showcasing its white, flat, square design with a frosted polycarbonate lens.
Langkah Pemasangan:
- Pemutusan Kuasa: Before starting, ensure the power supply to the installation area is completely disconnected at the circuit breaker. Verify with a voltage penguji.
- Sediakan Pembukaan: For recessed installations, ensure the ceiling grid opening is a standard 2'x2' size.
- Pendawaian: Open the wiring compartment on the back of the fixture. Connect the AC input wires (Line, Neutral, Ground) from the building's electrical system to the corresponding wires on the fixture. Ensure all connections are secure and insulated with wire nuts.
- Wattage Pemilihan: Cari wattage selector switch on the fixture. Choose the desired wattage setting (18W, 20W, 25W, 30W, or 36W) according to your lighting needs.
- Dimming Connection (Optional): If using a dimming system, connect the dimming wires (typically purple and gray for 0-10V dimming) from your dimmer control to the fixture's dimming wires.
- Lekapan Selamat: Carefully place the fixture into the ceiling grid opening. Use the integrated clips or mounting hardware to secure the fixture firmly to the grid.
- Pemulihan Kuasa: Once the fixture is securely installed and all wiring connections are verified, restore power at the circuit breaker.
- Operasi Ujian: Turn on the light switch to confirm the fixture is operating correctly.
Beroperasi
The Litetronics 77940 PRT240 LED fixture is designed for simple operation once installed.
- Hidupkan/Mati Kuasa: Control the fixture's power using the standard wall switch connected to its circuit.
- Peredupan: If connected to a compatible 0-10V dimmer, adjust the light output by manipulating the dimmer control. The fixture supports smooth dimming down to low levels.
- Wattage Pelarasan: wattage setting is selected during installation. To change the wattage, power must be disconnected, and the fixture may need to be accessed to adjust the selector switch.
Penyelenggaraan
The Litetronics 77940 PRT240 LED fixture requires minimal maintenance due to its long-life LED technology.
- Pembersihan: Pastikan bekalan elektrik diputuskan sebelum membersihkan. Gunakan kain lembut, kering, atau sedikit keringamp cloth to wipe the surface of the fixture. Do not use abrasive cleaners, solvents, or cleaners containing alcohol, as these can damage the finish or lens.
- Pemeriksaan: Periodically inspect the fixture for any signs of damage or loose connections. Address any issues promptly.
- Tiada Bahagian Boleh Diservis Pengguna: There are no user-serviceable parts inside the fixture. Do not attempt to open or repair the unit.
Menyelesaikan masalah
If you experience issues with your fixture, consult the table below for common problems and solutions.
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Lekapan tidak menyala | Tiada bekalan kuasa Pendawaian yang salah Faulty switch/breaker | Check circuit breaker and wall switch. Ensure power is connected. Verify wiring connections are secure and correct. |
| Light flickers or dims erratically | Sambungan pendawaian longgar Dimmer tidak serasi Voltage turun naik | Check all wiring connections. Ensure dimmer is compatible with 0-10V LED fixtures. Consult an electrician for voltage isu. |
| Output cahaya terlalu rendah/tinggi | wat tak betultagpenetapan e Dimmer setting too low/high | Sahkan wattage selector switch is set to the desired output. Adjust the dimmer control. |
| Berdengung bunyi dari lekapan | Dimmer tidak serasi Komponen longgar | Ensure dimmer is compatible. If noise persists, contact customer support. |
Spesifikasi
| Ciri | Perincian |
|---|---|
| Nombor Model | 77940 |
| Jenis Produk | Indoor Square Flat Panel LED Fixture |
| Dimensi | 2' x 2' |
| Wattage Pilihan | 18W, 20W, 25W, 30W, 36W (selectable) |
| Input Voltage | 120 / 277 volt |
| Suhu Warna | 4,000K (Putih Sejuk) |
| Jenis Kanta | Polycarbonate Frosted Lens |
| Boleh dimalapkan | Yes (0-10V Dimming) |
| Keberkesanan | 125 LpW |
| Lumen | 2250/2500/3125/3750/4500 (depending on wattage) |
| Warna/Selesai | putih |
| UPC | 706762779405 |
Waranti dan Sokongan
For warranty information or technical support regarding your Litetronics 77940 PRT240 LED Fixture, please contact Litetronics customer service directly. Refer to the product packaging or the official Litetronics webtapak untuk butiran hubungan terkini dan syarat jaminan.
Litetronics Contact Information:
Please visit the official Litetronics website or refer to your purchase documentation for customer support contacts.





