Page 33 - Towards A Sustainable Future , Phase 3 2025, E-Book_Neat

Figure 4.8 shows the Daikin and BMS technicians conducting
a field test of the SRD (Smart Refrigerant Detector) at one of
the client's Daikin air conditioners. The client complained that
the air conditioner has not been cold for many months. After
the technician installed the SRD, the alarm notification (Email
& WhatsApp) was sent to the technician, as the SRD detected
low refrigerant pressure.

Fig 4.9. Electricity bill after installing SRD

Should the technician receive an email or WhatsApp alarm
notification within 1 week, this indicates that there is a leakage
in the air conditioner and rectification of the leakage will be
carried out. After testing the SRD, the Daikin\BMS engineer
was satisfied with the prototype's design and functionality;
they are confident that SRD can assist the serving team in
troubleshooting and monitoring any refrigerant leakage and
low-pressure condition.

Fig 4.8. A Daikin technician testing the SRD onsite Daikin and the ITE team proposed the following for SRD (Smart
Refrigerant Detector):
The technician used the manifold to confirm that the air
conditioner was in low-pressure conditions and proceeded to 1. Install SRD on all New R32 air conditioners
charge the refrigerant into the condenser. Once the charging - Detect any refrigerant leakage, which can result in fire risk
was completed, SRD was reinstalled, and no alarm notification at home and in buildings. Necessary action can be taken to
was sent out. SRD will remain installed onsite and monitor the mitigate the leakage.
customer's air conditioner for 1 week to confirm that there - Monitor any low refrigerant conditions to reduce carbon
is no more leakage or low refrigerant condition. After SRD emissions (Scope 1, 2 & 3).
installation, confirm that there is no longer a low refrigerant
condition. The client shared that their electrical bill showed a 2. Additional tool for the Daikin\BMS servicing team for older
significant drop after rectifying the low-pressure problem, as R22 and R410A air conditioners. Assist them in monitoring
shown in Fig. 4.9. refrigerant level for 1 week after recharging the refrigerant in
the customer's air conditioner due to a low refrigerant report
- This is to ensure that the low refrigerant condition is not
caused by leakage in the air conditioning system.

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