Uvod
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.
Sigurnosne informacije
Always follow basic safety precautions when installing and maintaining electrical equipment. Failure to do so may result in serious injury or property damage.
- UPOZORENJE: Opasnost od strujnog udara. Isključite napajanje na osiguraču ili prekidaču prije instalacije ili servisiranja.
- Installation must be performed by a qualified electrician in accordance with all applicable national and local electrical codes.
- Osigurajte dovod voltage is compatible with the fixture's requirements (120/277 volt).
- Ne rukujte uređajima pod naponom mokrim rukama ili dok stojite na mokroj iliamp površine.
- 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.
Sadržaj paketa
Prije početka instalacije provjerite jesu li sve komponente prisutne i neoštećene.
- Litetronics 77940 PRT240 LED Flat Panel Fixture
- Vodič za instalaciju (ovaj priručnik)
- Mounting Hardware (e.g., clips, screws, wires - specific to mounting type)
Postavljanje (Instalacija)
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.

Nad glavom view of the Litetronics 77940 PRT240 Indoor Square Flat Panel LED Fixture, showcasing its white, flat, square design with a frosted polycarbonate lens.
Koraci instalacije:
- Isključivanje struje: Before starting, ensure the power supply to the installation area is completely disconnected at the circuit breaker. Verify with a voltage tester.
- Pripremite otvaranje: For recessed installations, ensure the ceiling grid opening is a standard 2'x2' size.
- Ožičenje: 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 Izbor: Locirajte wattage selector switch on the fixture. Choose the desired wattage setting (18W, 20W, 25W, 30W, or 36W) according to your lighting needs.
- Priključak za zatamnjivanje (opciono): 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.
- Sigurno učvršćenje: Carefully place the fixture into the ceiling grid opening. Use the integrated clips or mounting hardware to secure the fixture firmly to the grid.
- Obnova napajanja: Once the fixture is securely installed and all wiring connections are verified, restore power at the circuit breaker.
- Probni rad: Turn on the light switch to confirm the fixture is operating correctly.
Operating
The Litetronics 77940 PRT240 LED fixture is designed for simple operation once installed.
- Uključivanje/isključivanje: Control the fixture's power using the standard wall switch connected to its circuit.
- Dimming: 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 Podešavanje: The 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.
Održavanje
The Litetronics 77940 PRT240 LED fixture requires minimal maintenance due to its long-life LED technology.
- čišćenje: Prije čišćenja provjerite je li napajanje isključeno. Koristite meku, suhu ili blago brtvenu krpu.amp 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.
- inspekcija: Periodically inspect the fixture for any signs of damage or loose connections. Address any issues promptly.
- Nema dijelova koje može servisirati korisnik: There are no user-serviceable parts inside the fixture. Do not attempt to open or repair the unit.
Rješavanje problema
If you experience issues with your fixture, consult the table below for common problems and solutions.
| Problem | Mogući uzrok | Rješenje |
|---|---|---|
| Uređaj ne svijetli | Nema napajanja Neispravno ožičenje 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 | Slabo ožičenje Nekompatibilan dimer Voltage fluktuacije | Check all wiring connections. Ensure dimmer is compatible with 0-10V LED fixtures. Consult an electrician for voltage pitanja. |
| Svjetlosni izlaz je prenizak/previsok | Netačan wattage postavka Dimmer setting too low/high | Provjeri wattage selector switch is set to the desired output. Adjust the dimmer control. |
| Zujanje iz uređaja | Nekompatibilan dimer Labave komponente | Ensure dimmer is compatible. If noise persists, contact customer support. |
Specifikacije
| Feature | Detalj |
|---|---|
| Broj modela | 77940 |
| Vrsta proizvoda | Indoor Square Flat Panel LED Fixture |
| Dimenzije | 2' x 2' |
| Wattage Opcije | 18W, 20W, 25W, 30W, 36W (selectable) |
| Ulazni voltage | 120 / 277 Volt |
| Temperatura boje | 4,000K (hladno bijelo) |
| Lens Type | Polycarbonate Frosted Lens |
| Dimmable | Yes (0-10V Dimming) |
| Efikasnost | 125 LpW |
| Lumeni | 2250/2500/3125/3750/4500 (depending on wattage) |
| Boja/završna obrada | Bijelo |
| UPC | 706762779405 |
Garancija i podrška
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 webstranicu za najnovije kontakt podatke i uslove garancije.
Litetronics Contact Information:
Please visit the official Litetronics website or refer to your purchase documentation for customer support contacts.





