Pressure relief valves
The dual pressure relief valves are standard for each system. A shutoff valve is installed to allow
individual relief valves to be removed for testing or calibrating as required by local regulations.
Overall unit inspection
Conduct periodic inspections of the unit to ensure correct equipment operation. Inspect items such
as loose equipment, component operation, unusual noises, and other similar issues and correct if
necessary.
Heat exchanger in-service inspection
It is not necessary to perform an in-service inspection on the refrigerant side because there is no
corrosion on the refrigerant side so it is.
For the water side, if the water used is treated in accordance with Water treatment, an in-service
inspection is not necessary.
Ensure the system has adequate water or brine treatment. Adhere to any local standards for
closed-loop heating and cooling circuits.
While periodic in-service proof testing, for example hydro tests, may not be required, Johnson
Controls recognizes that national regulations may require such testing to be conducted.
Maintenance alerts
Scheduled maintenance alerts display on the fault screen. See Fault for information.
Table 25: Maintenance alerts
Alert Access level Description
Strainer cleaning Service A warning appears on the fault screen when the
4,000 h service is due. The warning clears after
cleaning the strainer and the fault is reset.
Heat sink cleaning Service A warning appears on fault screen when the 4,000 h
service is due. The warning clears after cleaning the
heat sink and the fault is reset.
The unit keeps running when any of the alerts occur. The counter resets if the warning is cleared.
YMAE Air-Cooled Inverter Scroll Chiller and Heat Pump112
To Next Page
Loading...
