Frequently Asked Questions

A CRAC unit is a precision cooling system designed to maintain stable temperature and humidity in critical environments.

These systems are commonly used in data centres and server rooms and are supplied by brands like Stulz and Vertiv.

CRAC units should typically be serviced every 3 to 6 months depending on the environment.

Regular servicing ensures efficient operation and prevents system failure.

A server room should generally be maintained between 18 and 27 degrees Celsius.

Maintaining the correct temperature ensures equipment operates reliably and efficiently.

Common faults include airflow restrictions, refrigerant issues and sensor failures.

Regular maintenance helps identify and resolve these issues before they cause downtime.

UPS installations can take anywhere from a few hours to several days depending on system size and complexity.

Larger systems require more time for installation and commissioning.

A UPS system provides instant backup power when mains supply fails or fluctuates. It uses batteries and an inverter to keep critical equipment running without interruption.

Inside the unit, power is converted and regulated so your load receives clean, stable output. Indigi Power & Cooling supplies and services UPS systems from APC, Eaton, Vertiv, Schneider Electric and other leading brands across Australia.

AnswerMost UPS systems run for between 5 and 30 minutes depending on load, battery size and system configuration. Smaller systems provide short runtime, while larger three-phase UPS systems are designed to support generator startup or controlled shutdown.

As batteries age, runtime reduces, which is why regular testing and maintenance is important.

The correct UPS size depends on your total load, required runtime and future growth. You need to calculate total wattage and allow additional capacity to avoid overloading.

Single-phase UPS systems are typically used for smaller applications, while larger environments use three-phase systems from Eaton, APC or Vertiv.

The difference between UPS types comes down to how they deliver and condition power. Each type offers a different level of protection.

Offline systems switch during outages, line-interactive systems regulate voltage, and online double conversion UPS systems provide continuous clean power. Online systems from Vertiv, Eaton and APC are standard in critical environments.

Yes, a UPS is still required even if you have a generator. A UPS bridges the gap while the generator starts and stabilises.

Without a UPS, even a short delay in generator startup can cause outages and system failures.

kVA is the apparent power rating of a UPS, while kW represents the actual usable power. The difference is based on power factor.

Modern UPS systems from Eaton, APC and Vertiv often operate close to unity power factor, meaning kVA and kW are similar.

We supply and service all major UPS brands across Australia including APC, Eaton, Vertiv, Riello, Socomec, ABB and Mitsubishi.

Indigi Power & Cooling is vendor neutral, so we recommend the best system based on your requirements rather than a single manufacturer.

A UPS system typically lasts between 10 and 15 years when properly maintained. Batteries require replacement more frequently.

VRLA batteries last around 3 to 5 years, while lithium-ion batteries can last 8 to 10 years.

Yes, a UPS protects against power surges, voltage fluctuations and short outages. Online UPS systems provide the highest level of protection.

For full protection, surge protection devices should also be installed alongside UPS systems from brands like Eaton and Vertiv.

Single-phase UPS systems are used for smaller loads, while three-phase systems support larger, high-capacity environments.

Three-phase UPS systems from APC, Eaton and Vertiv are typically used in data centres, hospitals and industrial sites.

UPS batteries should typically be replaced every 3 to 5 years for VRLA systems. Lithium-ion batteries last longer, usually 8 to 10 years.

Environmental conditions such as heat can significantly reduce battery lifespan.

A UPS battery needs replacing when runtime drops, alarms appear or testing shows reduced performance.

Systems from APC, Eaton and Vertiv provide alerts to indicate when batteries are approaching end of life.

VRLA batteries have a lower upfront cost but shorter lifespan, while lithium-ion batteries last longer and require less maintenance.

Lithium batteries also take up less space and perform better at higher temperatures.

UPS battery replacement costs vary depending on system size and configuration. Smaller systems may cost a few hundred dollars, while large systems can cost significantly more.

Three-phase systems from APC, Eaton and Vertiv require larger battery banks, which increases overall cost.

Yes, UPS batteries can be tested using impedance testing and load testing to identify early signs of failure.

Manufacturers like Eaton and Vertiv recommend regular testing as part of maintenance.

Yes, many UPS systems allow battery replacement without downtime using bypass systems or hot-swappable designs.

Modern systems from APC, Eaton and Vertiv are designed to support this functionality.

Heat, poor maintenance and age are the most common causes of UPS battery failure. High temperatures significantly reduce battery life.

Maintaining proper environmental conditions helps prevent early failure.

If UPS batteries are not replaced, the system may fail during a power outage. This can result in downtime, data loss and equipment damage.

Replacing batteries on schedule is far more cost effective than dealing with failure.

Yes, most UPS systems require a licensed electrician for installation to ensure compliance with Australian Standards.

This is especially important for hardwired and three-phase systems.

UPS installations can take anywhere from a few hours to several days depending on system size and complexity.

Larger systems require more time for installation and commissioning.

A UPS maintenance contract includes scheduled servicing, testing, reporting and priority support.

More advanced plans may include 24/7 response and monitoring.Answer

Yes, Indigi Power & Cooling provides UPS and CRAC services across Australia including metro, regional and remote locations.

We support clients nationwide with local delivery capability.

Commissioning is the final stage of a UPS installation where the system is tested and verified under load.

This ensures the system operates correctly and meets performance requirements.