INSTALLATION MANUAL---Important considerations
Special Tools
Tool Name
Requirement(s) for Use
Mini Vacuum Pump
Filling Device
Leak Detector
Concentration Detector
Pressure Gauge
Fire Extinguisher
It should be an explosion-proof vacuum pump; can ensure certain precision and its
vacuum degree should be lower than 10Pa.
It should be a special explosion-proof filling device; have certain precision and its
filling deviation should be less than 5g.
It should be calibrated regularly; and its annual leak rate should not exceed 10g.
A) The maintenance site should be equipped with a fixed-type combustible
refrigerant concentration detector and connected to a safeguard alarm system;
its error must be not more than 5%.
B) The installation site should be equipped with a portable combustible refrigerant
concentration detector which can realize two-level audible and visual alarm;
its error must be not more than 10%.
C) The concentration detectors should be calibrated regularly.
D) It is necessary to check and confirm the functions before using the concentration
detectors.
A) The pressure gauges should be calibrated regularly.
B) The pressure gauge used for Refrigerant 22 can be used for Refrigerants R290
and R161; the pressure gauge used for R410A can be used for Refrigerant 32.
It is necessary to carry fire extinguisher(s) when installing and maintaining an air
conditioner. On the maintenance site, there should be two or more kinds of dry
powder, carbon dioxide and foam fire extinguishers and that such fire extinguishers
should be placed at stipulated positions, with eye-catching labels and in handy
places.
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Summary of Contents for D.FREEDOM240
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