1. Setup and Installation
1.1 Safety Information
- Always disconnect power at the circuit breaker or fuse box before installing or servicing the timer.
- Installation should be performed by a qualified electrician in accordance with all local and national electrical codes.
- Ensure the timer's electrical ratings match the load requirements.
1.2 Wiring Instructions
The FF312H timer features a Single-Pole Double-Throw (SPDT) contact form, allowing it to control a circuit by either opening or closing it. Refer to the diagram below for typical wiring configurations. This timer is designed to fit a standard single-gang box.
- Turn off power at the main service panel.
- Remove the existing wall switch or cover plate.
- Connect the timer wires according to the appropriate wiring diagram for your application (e.g., normally open or normally closed circuit).
- Secure the timer into the wall box.
- Install the faceplate and knob.
- Restore power at the main service panel.
2. Operating Instructions
The FF312H is a spring-wound mechanical timer designed for simple operation.
- To activate the timer, turn the knob clockwise past the '2' hour mark to wind the spring mechanism.
- Then, rotate the knob counter-clockwise to the desired ON time setting (from 0 to 12 hours).
- The timer will count down the set duration and automatically turn OFF the connected device when it reaches the 'OFF' position.
- To turn off the device manually before the set time expires, rotate the knob to the 'OFF' position.
3. Maintenance
The Intermatic FF312H timer is designed for minimal maintenance.
- Periodically clean the faceplate with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Ensure the knob turns freely and without obstruction.
- No internal user-serviceable parts. If the unit malfunctions, consult a qualified electrician or contact customer support.
4. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Timer does not turn ON/OFF. | No power to the timer; incorrect wiring; faulty timer. | Check circuit breaker/fuse. Verify wiring connections. If power and wiring are correct, the timer may need replacement. |
| Timer knob is stiff or difficult to turn. | Internal mechanism obstruction or damage. | Do not force the knob. The unit may be damaged and require replacement. |
| Timer does not count down accurately. | Internal mechanism issue. | The timer may be faulty and require replacement. |
5. Specifications
| Feature | Detail |
|---|---|
| Model Number | FF312H |
| Timing Range | 0 to 12 Hours |
| Contact Form | SPDT (Single-Pole Double-Throw) |
| HP @ 120V | 1 |
| HP @ 240V | 2 |
| Load Capacity @ 125V | 20A (Inductive) / 7A (Tungsten) |
| Load Capacity @ 250V | 10A |
| Load Capacity @ 277V | 10A |
| Faceplate Color | Silver |
| Fits | Single-Gang Box |
| Standards | UL Listed (E76987), CSA Certified (LR3730) |
| Material | Plastic, Silver |
| Item Weight | 0.01 Ounces |
6. Warranty Information
This Intermatic product is covered by the manufacturer's standard warranty. Please refer to the official Intermatic website or contact customer support for detailed warranty terms and conditions. Keep your purchase receipt as proof of purchase.
7. Customer Support
For technical assistance, replacement parts, or further information, please contact Intermatic customer support or visit their official website.
- Brand: Intermatic
- Website: Visit the Intermatic Store on Amazon