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5.5.
Refrigerant Purge
Moist air left inside the refrigerant circuit can cause compressor malfunction. After having connected
the indoor and outdoor units, purge the air and moisture from the refrigerant circuit using a vacuum
pump.
1.
Unscrew and remove the caps from the 2-way and 3-way valves.
2.
Unscrew and remove the cap from the service valve.
3.
Connect the vacuum pump hose to the service valve.
4. Operate the vacuum pump for 10-15 minutes until an absolute vacuum of 10 mm Hg has been
reached.
5.
With the vacuum pump still in operation, close the low-pressure knob on the vacuum pump
coupling. Stop the vacuum pump.
6. Open the 2-way valve by 1/4 turn and then close it after 10 seconds. Check all the joints for leaks
using liquid soap or an electronic leak device.
7.
Turn the body of the 2-way and 3-way valves. Disconnect the vacuum pump hose.
8. Replace and tighten all the caps on the valves.
14
LENNOX MULTI SPLIT INVERTER
Figure 9: Refrigerant Purge
Outdoor Unit
13 23 50
|
lennoxaus.com.au
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