RTAG-400 Trane Chiller Parameters related explanation
Автор: Javeed HVAC Technician
Загружено: 2023-07-05
Просмотров: 7668
Vaccum procedure RTAG model Trane chiller
If there is no refrigerant in the unit, it is necessary to
pump the vacuum first and then refill it. The steps are as
follows:
1. The electronic expansion valve should be in the open
position.
2. Confirm that all power supply of the unit is
disconnect and locked.
3. The unit shall complete leak detection first, no leakage is confirmed.
4. Connecting the vacuum hose to service valve on the
evaporator and/or liquid line, open the service valve.
5. Start the vacuum pump. Close the service valve and
Stop vacuum pump successively when the vacuum
gauge is lower than 67Pa.
6. The unit should be left to rest for at least 1 hour after
vacuuming, and the pressure rise should not exceed
20 Pa. If the pressure rise exceeds 20Pa, there is still
a leak or some moisture in the system, repeat steps 3
to 6 above.
7. Remove the vacuum hose.
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