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6). Set the 3-way valve to the closed position immediately.
Do this quickly so that the gauge ends up indicating 0.3 to 0.5Mpa.
Disconnect the charge set, and tighten the 2-way and 3-way valve
’
s stem nuts.
Use a torque wrench to tighten the 3-way valves service port cap to a torque of 1.8 kgf.m.
Be sure to check for gas leakage.
2. Air purging by the refrigerant
Procedure:
1). Confirm that both the 2-way and 3-way valves are set to the closed position.
2). Connect the charge set and a charging cylinder to the service port of the 3-way valve.
Leave the valve on the charging cylinder closed.
3). Air purging
Open the valves on the charging cylinder and the charge set. Purge the air by loosening the flare nut on
the 2-way valve approximately 45
’
for 3 seconds then closing it for 1 minute; repeat 3 times.
After purging the air, use a torque wrench to tighten the flare nut on the 2-way valve.
4). Check the gas leakage
Check the flare connections for gas leakage.
5). Discharge the refrigerant
Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the
Summary of Contents for MOA-07HN1-QC2
Page 11: ...9 3 Dimension 3 1 Indoor Units Figure 1 Figure 2...
Page 16: ...14 MSX 21HRN1 QB8W MSX 24HRN1 QB8W...
Page 17: ...15 5 2 Outdoor Units MOA 07HN1 QC2...
Page 18: ...16 MOA1 09HN1 QC2 MOA 09HN1 QC2 MOB1 12HN1 QC2 MOB 12HN1 QC2...
Page 19: ...17 MOF 18HN1 QC2...
