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Predictive Maintenance

at Brisbane's Stuartholme School

Predictive Maintenance at Brisbane’s Stuartholme School
The Customer The Challenge Course of Action Course of Action Benefits
The Customer

Customer  Name: Cooltimes Services

Site: Stuartholme School

HVAC System: Daikin VRV Heat Pump

Cloud-Based Solutions: Predictive Maintenance Suite

Stuartholme School is an all-girls private high school located in Brisbane, Queensland, Australia. The site’s HVAC system includes Daikin VRV outdoor units connected to various types of indoor units.

The Challenge

The Stuartholme School campus was suffering from inconsistent climate control, with HVAC systems unable to maintain setpoints. In addition, routine HVAC maintenance was inefficient, time-consuming, and expensive, prompting school management to seek a remote service solution.

Predictive Maintenance at Brisbane’s Stuartholme School
The Solution

Using the CoolAutomation professional application and its advanced HVAC diagnostic tools, an alarmingly high current reading from the fan driver PCB was quickly identified. The issue limited the machine’s frequency, yet no fault or protection state was activated. After the fan driver’s PCB had been replaced, the rotation speed was 710 rpm, and the current draw was appropriate at eight amps. Following the repair, the school’s setpoint issues were resolved. Additionally, the HVAC system was now remotely monitored 24\7 using the CoolAutomation cloud-based suite. This facilitated proactive maintenance, significantly improving service efficiency while ensuring minimal downtime.

Predictive Maintenance at Brisbane’s Stuartholme School
The Traditional Course of Action
1
Scheduling a site visit
2
Traveling to site
3
Connecting a service tool and waiting on-site for several hours to gather data
4
Lengthy onsite analysis of the raw data
5
Potential consultation with a senior technician
6
Locating the fault
7
Ordering the required parts
8
Returning to the site and applying the fix
9
Returning onsite to re-analyze the data and confirm correct operation
clock
A total of 11 working hours
The CoolAutomation Way
1
Remote diagnostics and historical data review
2
Less than 1 hour of onsite work by a junior VRF technician
3
Remote fix verification
clock
A total of 2 working hours
Benefits
benefits
Reduced HVAC energy consumption
benefits
Consistent comfort for pupils and staff - less system downtime
benefits
Enhanced System longevity via rapid fault identification: ensuring no long-term damage is done to the system
benefits
Enhanced service - one vs. multiple service calls
benefits
Lower operational costs with no initial call-out fee
benefits
Increased HVAC technician productivity
q
Using CoolAutomation's cloud-based solutions has saved the school countless hours of call outs and labor. By diagnosing the Daikin VRV system remotely and efficiently, senior technicians ensure minimal equipment downtime. CoolTimes has allowed us to set schedules, restrict wall controller operation, set auto heat/cool logic, change over rules and monitor real-time energy consumption. Implementing these control strategies has already brought a downturn in energy and maintenance costs and will presumably see equipment lifespan increased.
Alan Bedford, Facility Manager

 


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