1. Introduction
Thank you for choosing the MICROTEK i-MAXX-5.5KVA 192V Online UPS. This Uninterruptible Power Supply (UPS) is designed to provide reliable, clean, and stable power to your critical equipment. Featuring DSP technology with an IGBT-based inverter, this pure sinewave UPS ensures optimal performance and protection against power fluctuations. Please read this manual thoroughly before installation and operation to ensure safe and efficient use of your device.

Figure 1: Front view of the MICROTEK i-MAXX-5.5KVA 192V Online UPS. This image shows the main unit with its control panel and display.
2. Safety Instructions
Observe the following safety precautions to prevent injury and damage to the UPS:
- Electrical Safety: Ensure proper grounding. Do not open the UPS casing; there are no user-serviceable parts inside. Refer all servicing to qualified personnel.
- Environment: Install the UPS in a well-ventilated area, away from direct sunlight, heat sources, and moisture. Maintain adequate clearance around the unit for airflow.
- Battery Handling: Batteries contain hazardous materials. Do not dispose of batteries in a fire. Follow local regulations for battery disposal.
- Overload Protection: Do not overload the UPS beyond its rated capacity. This can cause damage to the unit and connected equipment.
- Emergency Shutdown: Familiarize yourself with the emergency shutdown procedure for the UPS and connected equipment.
3. Setup
3.1 Unpacking
Carefully unpack the UPS and inspect it for any shipping damage. Report any damage to your dealer immediately. Retain the packaging materials for future transport or servicing.
3.2 Placement
Place the UPS on a stable, flat surface. Ensure the installation environment is clean, dry, and within the recommended temperature and humidity ranges. Avoid placing the UPS near flammable liquids or gases.
3.3 Electrical Connection
Connect the UPS input power cord to a properly grounded electrical outlet. Ensure the input voltage matches the UPS specifications. Connect your critical equipment to the UPS output receptacles. Do not connect surge suppressors or power strips to the UPS output, as this may interfere with its operation.
3.4 Battery Connection
This UPS requires external 192V Sealed Lead Acid batteries. Connect the battery bank to the designated battery terminals on the UPS, observing correct polarity (+ to + and - to -). Ensure all connections are secure before powering on the unit.
4. Operating Instructions
4.1 Powering On/Off
- To Power On: After connecting all cables, press and hold the power button on the front panel for a few seconds until the UPS powers on. The LCD display will illuminate.
- To Power Off: Press and hold the power button until the UPS shuts down. Ensure all connected loads are safely powered off before shutting down the UPS.
4.2 LCD Display
The Smart LCD Display provides real-time information about the UPS status, input/output voltage, battery level, load percentage, and various operational modes. Refer to the detailed display guide in the full manual for specific icon meanings and navigation.
4.3 Key Features
- DSP Technology with IGBT Based Inverter: Ensures high efficiency and reliable power output.
- Inbuilt OVCD (Over Voltage Cut-Off Device) with Surge Protection: Protects connected equipment from voltage spikes and surges.
- EMI / RFI Noise Filter: Minimizes electromagnetic and radio frequency interference for clean power.
- CVCF (Constant Voltage Constant Frequency): Provides stable output voltage and frequency regardless of input fluctuations.
- Wide Input Voltage Range: Allows the UPS to operate effectively in areas with unstable power grids.
- Advanced Battery Management: Optimizes battery life and performance.
- Hot Stand-by, Cold Start & RS-232/USB Port: Offers flexible operation and communication options.
- Built-In Maintenance Bypass & Static Bypass Switch: Allows for maintenance without interrupting power to critical loads.
- Generator Compatible: Designed to work seamlessly with generators (ensure generator capacity is 2.5 times the UPS capacity).
- Configurable Output Voltage Settings: Allows adjustment of output voltage to suit specific load requirements.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your UPS:
- Cleaning: Keep the UPS free from dust and debris. Use a soft, dry cloth for cleaning. Do not use liquid cleaners.
- Ventilation: Ensure ventilation openings are clear and unobstructed to prevent overheating.
- Battery Check: Periodically check battery connections for tightness and signs of corrosion. Consult a qualified technician for battery replacement.
- Environmental Conditions: Maintain the UPS in a stable environment, avoiding extreme temperatures and humidity.
- Load Management: Avoid consistently operating the UPS at its maximum load capacity to prolong its lifespan.
6. Troubleshooting
This section provides solutions to common issues. For problems not listed here, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| UPS does not turn on | No input power; Battery not connected or discharged | Check power cord connection; Ensure battery is connected and charged. |
| UPS beeps continuously | Overload; Low battery; Fault condition | Reduce connected load; Allow battery to charge; Consult manual for fault codes. |
| Connected equipment loses power | UPS in bypass mode; UPS shut down due to fault | Check UPS status on LCD; Troubleshoot fault condition. |
| LCD display is blank | UPS is off; Display fault | Turn on UPS; If UPS is on and display is blank, contact support. |
7. Specifications
Detailed technical specifications for the MICROTEK i-MAXX-5.5KVA 192V Online UPS:
| Feature | Specification |
|---|---|
| Brand | MICROTEK |
| Model Number | i-MAXX-5.5KVA 192V (1PH IN-1PH Out) |
| Battery Cell Composition | Sealed Lead Acid |
| Voltage | 192 Volts |
| Amperage | 15 A |
| Battery Charge Time | 12 Hours |
| Form Factor | Rack |
| Maximum Power | 5.5 Kilowatts |
| Output Voltage | 192 Volts |
| Connector Type | RS-232, USB |
| Number of Outlets | 8 |
| Output Wattage | 500 Watts |
| Wattage | 4400 Watts |
| Frequency Range | 40Hz-55Hz |
| Item Weight | 62000 Grams |
| Item Dimensions (L x W x H) | 56.2 x 25 x 83 Centimeters |
| Item Type Name | Pure Sinewave |
8. Warranty and Support
MICROTEK products are manufactured under strict quality control standards. This product comes with a standard manufacturer's warranty. Please refer to the warranty card included with your purchase for specific terms and conditions, including warranty period and coverage details.
For technical assistance, troubleshooting, or warranty claims, please contact MICROTEK customer support. Have your product model number and purchase details ready when contacting support.
Customer Support: Refer to the contact information provided in your product packaging or visit the official MICROTEK website for the latest support details.

