Service
CRAC Unit Maintenance & Servicing
Preventative CRAC servicing, critical room air conditioning maintenance, quarterly service plans and emergency fault response across all major precision cooling brands.
CRAC servicing keeps computer room air conditioning and critical room air conditioning systems stable before faults become outages. A maintenance plan checks filters, coils, fans, refrigerant, condensate, humidifiers, alarms and controls on a recurring schedule matched to the room load and risk profile.
CRAC Services acts as a national CRAC provider for DX, condenser water, chilled water, in-row and rear-door cooling systems across Australia. Our technicians support Vertiv Liebert, Schneider Uniflair, Stulz, Daikin Applied, Mitsubishi Heavy and Climaveneta equipment, including mixed fleets with legacy and current-generation units.
Each CRAC maintenance visit includes a written service report with readings, defects, photos, recommended parts and priority actions. Emergency fault response is available for sites with thermal alarms, compressor faults, water leaks, high supply air temperature or BMS alerts.
For facility managers comparing CRAC providers, the practical difference is evidence. We record the condition of each unit, the exact work completed, the readings that matter, and the next maintenance decision so the data centre, server room or critical room has a traceable service history.
A good CRAC maintenance regime is risk-based, not calendar-only. The service frequency is set by the room load, the redundancy class, the age and condition of the units, the cleanliness of the environment, and the cost of downtime. A single-unit comms room on N cooling carries more risk per fault than a data hall on N+1, so the inspection interval and spares holding are matched to that risk.
Planned CRAC servicing costs less than reactive repair once the cost of an outage is counted. A blocked condensate drain, a clogged filter bank, a failing fan bearing or a slow refrigerant leak each give early warning signs that a scheduled visit catches. Finding them on a planned visit avoids a high-temperature alarm, an emergency call-out and the risk to the equipment the room protects.
Scope
Our service
includes
- 01Quarterly preventative CRAC servicing
- 02Emergency CRAC fault response
- 03Filter replacement and airflow checks
- 04Indoor and outdoor coil cleaning
- 05Refrigerant pressure, superheat and leak checks
- 06Compressor, fan and VSD inspection
- 07Humidifier, drain pan and condensate checks
- 08CHW and CDW valve and actuator checks
- 09Alarm history, BMS points and control setpoint review
- 10Service report with defects, photos and priority actions
Recommended schedule
Preventative service intervals
01
Monthly visual check
- Filter face inspection
- Room temperature check
- Alarm panel review
- Water leak check
02
Quarterly technician service
- Filter replacement
- Coil and condensate inspection
- Fan and compressor checks
- Setpoint and alarm test
03
Annual major service
- Full coil clean
- Electrical inspection
- Refrigerant leak check
- Controls review
- Maintenance plan reset
Methodology
How we work
Asset register and baseline
We record every CRAC and CRAH unit on site: brand, model, serial, topology, refrigerant type, capacity, redundancy role and BMS points. The baseline readings from the first visit become the reference point that later visits compare against.
Risk-based service plan
Service frequency is matched to room load, redundancy class, equipment age and environment. High-risk single-unit rooms and dusty sites get tighter intervals; well-redundant halls follow the standard quarterly and annual pattern.
Planned service visit
Each visit follows the heat path: filters, coils, fans, compressor or chilled water valve, condensate, humidifier, controls and alarms. DX refrigerant work is done by ARC-licensed technicians with a refrigerant log entry.
Readings and defect report
We record supply and return air temperatures, refrigerant or water-side readings, fan and electrical checks, and any defect with a photo and a priority rating. The written report lists recommended parts and the next decision.
Follow-up and trend tracking
Defects are tracked to closure and readings are trended over time, so slow drift (a fouling coil, a weakening fan, a creeping refrigerant loss) is caught before it triggers a high-temperature alarm.
Equipment
Equipment types
we service
FAQs
Frequently asked questions
How often should CRAC maintenance be done?
Quarterly CRAC maintenance is the normal baseline for data centres and server rooms. High-density rooms, dusty environments and sites with older equipment may need monthly filter checks. Annual major service should include coil cleaning, electrical checks, refrigerant leak testing, control review and a written defect plan.
What is included in a CRAC maintenance visit?
A maintenance visit checks filters, coils, fans, compressors, refrigerant readings, condensate drains, humidifiers, controls, alarm history, BMS points and room temperatures. CHW and CDW units also need valve, actuator and water loop checks. The final report records readings, defects, photos and recommended priority actions.
Do you service all CRAC brands?
Yes. CRAC Services maintains Vertiv Liebert, Schneider Uniflair, Stulz, Daikin Applied, Mitsubishi Heavy, Climaveneta and legacy Emerson equipment. Mixed fleets are common, so our maintenance reports group issues by unit, brand, topology and priority.
Can you attend emergency CRAC faults?
Yes. Emergency response covers high temperature alarms, compressor faults, water leaks, blocked condensate drains, fan failures, refrigerant faults and BMS alarm escalation. For contracted maintenance clients, we already hold asset data and service history, which helps fault diagnosis move faster.
What should I look for in a CRAC provider?
A CRAC provider should understand computer room air conditioning, critical room air conditioning, refrigerant licensing, controls, BMS alarms, airflow and the operating envelope for IT equipment. Ask for asset registers, readings from each visit, defect priority, parts recommendations and evidence that the technician understands AS/NZS 5149 and ASHRAE TC 9.9.
Is critical room air conditioning different from normal comfort cooling?
Yes. Critical room air conditioning is designed for heat-producing equipment, tighter temperature and humidity bands, 24/7 operation, redundancy and alarm response. Comfort cooling is usually designed around occupant comfort. CRAC maintenance checks the mechanical unit and the room condition so the protected equipment stays inside its operating range.
What drives the cost of a CRAC maintenance plan?
The main cost drivers are the number and type of units, the topology (DX, CDW or CHW), the service frequency set by room risk, travel to the site, and whether spares and emergency response are included. A small comms room on quarterly service costs far less than a multi-unit data hall on monthly visits with priority response. We quote per site after the asset register so the plan matches the real equipment and risk, and we provide the quote within one business day.
Brands we service
CRAC brands we install and maintain
Sectors we cool
Industries that rely on precision cooling
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