1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Orbis Mini T-D Analog Time Programmer. Please read this manual carefully before using the device to ensure safe and correct operation. Keep this manual for future reference.
2. Product Overview
The Orbis Mini T-D is an analog hourly time switch designed for surface mounting. It features a 24-hour dial for precise scheduling of electrical circuits. This device is suitable for various applications requiring automated switching based on a daily program.

Figure 2.1: Front view of the Orbis Mini T-D Analog Time Programmer, showing the 24-hour dial and switching segments.
3. Technical Specifications
| Feature | Specification |
|---|---|
| Model | Mini T-D |
| Part Number | OB251032 |
| Operating Voltage | 120 V/AC, 230 V/AC |
| Switching Channels | 1 x switch/inverter |
| Timer Type | Analog, 24-hour dial |
| Mounting Type | Surface Mounted |
| Product Dimensions (H x W x D) | 55 mm x 72 mm x 72 mm (2.17" x 2.83" x 2.83") |
| Batteries Required | No |

Figure 3.1: Dimensions of the Orbis Mini T-D Analog Time Programmer.
4. Safety Instructions
- Installation and maintenance should only be performed by a qualified electrician in accordance with local wiring regulations and standards.
- Always disconnect power to the circuit before installing, servicing, or removing the timer.
- Do not exceed the specified voltage and current ratings of the device.
- Ensure proper grounding to prevent electrical shock.
- Do not expose the device to moisture, extreme temperatures, or corrosive environments.
- Keep out of reach of children.
5. Installation
The Orbis Mini T-D is designed for surface mounting. Follow these steps for proper installation:
- Power Disconnection: Before beginning any installation, ensure that the main power supply to the circuit is disconnected at the circuit breaker or fuse box. Verify with a voltage tester.
- Mounting Location: Choose a suitable, dry, and protected location for surface mounting. Ensure there is enough space for wiring and access to the dial.
- Secure Mounting: Use appropriate screws and anchors (not supplied) to securely fasten the timer to the wall or mounting surface.
- Wiring: Connect the electrical wires to the terminals on the timer according to the wiring diagram provided on the device or in its packaging. Ensure all connections are tight and secure. Typically, this involves connecting the incoming live and neutral wires, and the outgoing live wire to the load (e.g., light, fan).
- Enclosure: Once wiring is complete, ensure the protective cover is securely closed to prevent accidental contact with live parts.
- Power Restoration: Restore power to the circuit and test the timer's functionality.
6. Operation
The Mini T-D features a 24-hour analog dial for setting your desired ON/OFF times.
- Set Current Time: Rotate the entire 24-hour dial clockwise until the current time aligns with the small arrow or marker on the stationary part of the timer. The dial is marked from 1 to 24 hours.
- Program ON/OFF Times: The blue segments around the dial represent time intervals. Each segment typically corresponds to a specific time duration (e.g., 15 minutes). To set an 'ON' period, push the corresponding segments outwards. To set an 'OFF' period, leave the segments pushed inwards.
- Manual Override (if applicable): Some models may include a manual override switch (often a small lever or button) that allows you to temporarily switch the connected device ON or OFF, overriding the set program. Refer to the specific markings on your device.
- Automatic Operation: Once programmed and the current time is set, the timer will automatically switch the connected device ON and OFF according to your settings.
7. Maintenance
- Cleaning: Periodically clean the exterior of the timer with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Inspection: Regularly inspect the timer for any signs of damage, loose connections, or overheating. If any issues are found, disconnect power and consult a qualified electrician.
- No User-Serviceable Parts: The internal components of the timer are not user-serviceable. Do not attempt to open or repair the device yourself.
8. Troubleshooting
If you encounter issues with your Orbis Mini T-D timer, refer to the following table:
| Problem | Possible Cause | Solution |
|---|---|---|
| Timer not switching ON/OFF | No power supply Incorrect programming Manual override engaged | Check circuit breaker/fuse Verify segments are pushed out/in correctly Disengage manual override |
| Connected device not receiving power | Faulty wiring Overload Connected device issue | Check wiring connections (consult electrician) Ensure load does not exceed timer rating Test connected device independently |
| Dial not rotating | No power supply Internal mechanical fault | Check power supply Contact support (do not attempt repair) |
If the problem persists after attempting these solutions, please contact Orbis customer support or a qualified electrician.
9. Warranty and Support
For information regarding warranty coverage, technical support, or service, please refer to the warranty card included with your product or visit the official Orbis website. Please have your model number (Mini T-D) and part number (OB251032) available when contacting support.





