TEKTINO RCC-9A maintenance manual V2.0
Under the following situations, it is possible that the machine has leakage in pipeline connections, thus need to
make leakage test:
1. The refrigerant volume in equipment tank reduces, without operations;
2. Compressor and Solenoids work well, while recovery works too slow or can not work normally;
3. Any operations or equipment maintenance that needs to disconnect and connect the pipelines or adaptors
that may cause leakage. For example, change drier-filter.
There are two methods to make leakage tests: Leakage detector and high pressure test:
1. Leakage test with refrigerant detector: When equipment pipeline is full of refrigerant, for example,
during running recovery, use refrigerant detector to find out the leakage points.
2. High pressure leakage test:
a) Connect Nitrogen generator (In case no nitrogen generator can be found, can use air compressor) to
equipment SUCTION or CHARGE port, and run recovery until it stops with high pressure alarm
b) Block the SUCTION and CHARGE ports with nut caps.
c) Enter “Component test” page by following procedure
d) In “Component test” page, turn on V1, V5, V9, V10, V11 and V12. Wait until the pressure shown in 3
pressure gauges become equal, turn off the equipment.
