AIR EVACUATION
CAUTION
Use a vacuum pump with a gauge reading lower than -0.1 MPa and an air discharge capacity
above 40L/min.
The outdoor unit does not need vacuuming.
DO NOT
open the outdoor unit's gas and liquid
stop valves.
Ensure that the Compound Meter reads -0.1 MP a or below after 2 hours. If after three hours of
operation and the gauge reading is still above -0.1 MPa, check if there is a gas leak or water
inside the pipe. If there is no leakage, perform another evacuation for 1 or 2 hours.
DO NOT
use refrigerant gas to evacuate the system.
Safety Precautions
!!
NOTE:
If there is no change in system pressure, unscrew the cap from the high pressure
valve.If there is a change in system pressure, there may be a gas leak.
Evacuation Instructions
NOTE:
Before using manifold pressure
gauge and vacuum pump, please read
their operating instructions and be familiar
with how to use the manual correctly
1. Connect the hose of manifold pressure gauge to the maintenance port on the low pressure
valve of outdoor unit.
2. Connect another hose from manifold pressure gauge to vacuum pump.
3. Open the Low Pressure side of the manifold gauge.Keep the High Pressure side closed.
4. Turn on the vacuum pump to empty the gas in the system.
5. Run the vacuum pump for at least 15 minutes, or until the compound meter reads
- 76cmhg (- 1 X105pa).
6. Close the low pressure side of the manifold pressure gauge and close the vacuum pump.
7. Wait for 5 minutes and check whether the system pressure changes.
High pressure valve
Low presasure valve
Manifold valve
Multi-function gauge pressure gauge
-76cmHg
Lohandle
Discharged hose
Discharged hose
Vacuum pump
Hihandle
22
Содержание AAC3000
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