1. Introduction
This manual provides essential information for the safe and efficient operation of your MICROTEK M-sun 1235 Solar Inverter UPS. Please read this manual thoroughly before installation and use to ensure proper functioning and to prevent damage to the unit or connected equipment. This inverter is designed to provide reliable power backup and utilize solar energy for enhanced efficiency.
2. Safety Instructions
- Electrical Safety: Always ensure the inverter is properly grounded. Do not open the inverter casing; refer servicing to qualified personnel.
- Ventilation: Install the inverter in a well-ventilated area to prevent overheating.
- Water Exposure: Keep the inverter away from water, moisture, and corrosive environments.
- Battery Safety: Batteries contain corrosive acid. Wear protective gear when handling. Ensure proper battery connections to avoid short circuits.
- Children and Pets: Keep the inverter and batteries out of reach of children and pets.
- Overload Protection: Do not overload the inverter beyond its specified capacity.
3. Product Overview
The MICROTEK M-sun 1235 is a 935 VA, 12V pure sine wave solar inverter UPS designed for home use. It integrates solar charging capabilities with traditional inverter functions to provide an efficient power solution.
3.1 Key Features
- Elegant and ergonomic design.
- Advanced seven-segment digital display for input and output voltage.
- Energy-efficient with power-saving technology.
- Automatic low and high cut-off for grid supply during fluctuations.
- Pure Sine Wave Output.
- Multiple protections: Short-Circuits, Over-Voltage, Over-Current.
- Solar and Grid Power operation modes.
- Eco-friendly operation.
3.2 Components and Display
The inverter features a digital display that provides real-time information about its operational status.
Figure 1: Angled view of the MICROTEK M-sun 1235 Solar Inverter UPS.
Figure 2: Front view of the inverter, highlighting the digital display and power button.
Figure 3: Overview of the inverter's protective features and technology, including short-circuit, over-voltage, and over-current protection, PWM technology, pure sine wave output, and solar/grid operation.
Figure 4: The user-friendly LCD display shows various parameters such as Grid Unit Saved (KWH), Solar Power Available (WATT), PV Voltage, Output Load Percentage, Grid Charging Current, Grid Voltage, Battery Voltage, Output Voltage, and PV Current.
4. Setup and Installation
Installation of the MICROTEK M-sun 1235 Solar Inverter UPS should be performed by a qualified technician to ensure safety and optimal performance. The following steps provide a general overview:
- Location: Choose a dry, well-ventilated area, away from direct sunlight, heat sources, and flammable materials. Ensure sufficient clearance around the unit for airflow.
- Battery Connection: Connect the battery terminals to the inverter's battery input terminals, ensuring correct polarity (positive to positive, negative to negative). Use appropriate gauge cables.
- Solar Panel Connection: Connect the solar panel array to the designated solar input terminals on the inverter. Verify correct polarity and ensure the solar panel voltage and current are within the inverter's specifications.
- AC Input Connection: Connect the main AC power supply to the inverter's AC input terminal.
- Load Connection: Connect your appliances and loads to the inverter's AC output sockets.
- Initial Power-Up: After all connections are secure, switch on the inverter. Observe the digital display for status indicators.
5. Operation
5.1 Powering On/Off
- To Power On: Press and hold the power button until the display illuminates.
- To Power Off: Press and hold the power button until the display turns off.
5.2 Understanding the Digital Display
The digital display provides critical information about the inverter's status:
- Input/Output Voltage: Shows the current AC input and output voltage.
- Battery Status: Indicates battery charge level and voltage.
- Load Level: Displays the percentage of connected load.
- Solar Charging: Indicates when solar charging is active and the power being generated.
- Error Codes: In case of a fault, specific codes will be displayed to assist in troubleshooting.
5.3 Operating Modes
The inverter operates in different modes based on power availability and settings:
- Mains Mode: When grid power is available and stable, the inverter charges the battery and passes grid power to the load.
- UPS Mode (Battery Mode): During a power outage or grid fluctuation, the inverter automatically switches to battery power to supply the connected loads.
- Solar Mode: The inverter prioritizes solar power to charge the battery and/or power the load, reducing reliance on grid electricity.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your inverter.
- Cleaning: Keep the inverter's exterior clean and free from dust. Ensure ventilation openings are not blocked. Use a dry cloth for cleaning.
- Battery Inspection: Periodically check battery terminals for corrosion. Clean them if necessary. Ensure battery water levels (for lead-acid batteries) are maintained.
- Cable Connections: Regularly inspect all cable connections for tightness and signs of wear or damage.
- Environmental Check: Ensure the installation environment remains dry and well-ventilated.
7. Troubleshooting
If you encounter issues, refer to the following common problems and solutions. For complex issues, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not turning on | No battery connection, low battery voltage, faulty power button. | Check battery connections and charge level. Ensure main power is available. |
| No output power | Overload, short circuit, inverter in fault mode. | Reduce load. Check for short circuits in connected appliances. Restart inverter. |
| Battery not charging | Mains power not present, solar panels not connected/faulty, charging mode incorrect. | Verify mains supply. Check solar panel connections and sunlight. Ensure correct charging mode is selected. |
| Unusual noise or smell | Internal fault, overheating. | Immediately turn off the inverter and disconnect from power. Contact service. |
8. Specifications
The following table details the technical specifications for the MICROTEK M-sun 1235 Solar Inverter UPS (Model: UPS SOLAR 935VA/12V).
| Feature | Specification |
|---|---|
| Model Name | UPS SOLAR 935VA/12V |
| Manufacturer | Microtek International Pvt. Ltd. |
| Product Dimensions (LxWxH) | 38.7 x 39.6 x 20.7 cm |
| Item Weight | 10 kg 300 g |
| Power Source | AC |
| Wattage | 600 Watts |
| Recommended Use | Home |
| Included Components | Inverter |
| Input Voltage Range (Wide) | 100V~280V |
| Input Voltage Range (Narrow) | 170V~260V |
| Output Voltage on Mains Mode | Same as Input Voltage |
| Output Voltage on UPS Mode | 210V ± 10% |
| Output Frequency on UPS Mode | 50Hz ± 0.1Hz |
| Switching (Mains to UPS & vice versa) | Automatic |
| Output Waveform on Mains Mode | Same as Input |
| Output Waveform on UPS Mode | Pure Sinewave |
| Battery Charging Current (Mains) | Constant Charging approx 10% of the Rated Battery Current in AH |
| Maximum Solar Panel Current | 30A |
| Solar Over Current Capacity | 20% |
| Mains Mode Charger | Power Factor Controlled Boost Technology |
| Peak Efficiency | >80% |
| UPS Overload / UPS Short Circuit | 110% / 300% |
| UPS Transfer Time | ≤ 15 msec. |
| Technology | DSPIC Micro Controller Based Design |
| Auto Reset Feature | Yes |
| Reverse Panel Protection | Yes |
| Charging Profile with Solar | Complete |
| Solar Charger / Normal Charger Modes | Slide Switch to Select Charger Mode |
| Battery Deep Discharge Pickup Capability | Yes |
| Thermal Protection | Both in Grid Charging & Backup Mode |
| Cooling Fan Control | Both by Load & Temperature and in Charging Mode too |
| Output Voltage Fluctuation (Backup Mode) | Not at All |
| Display Indications | LCD (16x2) for Display |
| Grid Units Saved Till Date Info | KWH Indication Present |
| Solar Power Available at the moment info | WATT Indication Present |
| DC Input Volt. High Cut Protection/Recover | Yes |
| Maximum Solar Power Rating | 45W to 600W |
| Operating Temperature | 0–45°C |
9. Warranty and Support
Your MICROTEK M-sun 1235 Solar Inverter UPS comes with a standard manufacturer's warranty. Additionally, a 2-year extended warranty plan by Onsitego may be available for purchase.
For warranty claims, technical assistance, or service requests, please contact MICROTEK customer support. Keep your purchase receipt and product serial number handy for faster service.
Manufacturer: Microtek International Pvt. Ltd.