Collecting The Refrigerant Into The Outdoor Unit; Evacuation Of The Complete Refrigeration Circuit, Indoor And Outdoor Unit - Bosch Climate 5000 Series Service Manual

Service Manual

6.6 Collecting the Refrigerant Into the Outdoor Unit

Figure 20
Procedure
1. Confirm that both the 2 way and 3 way valves are set to the opened position
Remove the valve stem caps and confirm that the valve stems are in the
opened position. Be sure to use a hexagonal wrench to operate the valve
stems.
2. Connect the charge hose with the push pin of handle lo to the 3 way valves
gas service port.
3. Air purging of the charge Open the handle Lo v alve of the manifold valve
slightly to purge air from the charge hose for 5 seconds and then close it
quickly.
4. Set t e 2 way valve to the close position.
5. Operate the air conditioner at the cooling cycle and stop it when the gauge
indicates 0.1MPa.
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 valve's service port cap to a torque of 18N. Be sure to check for gas
leakage.
2 4 |
6.7 Evacuation of the Complete Refrigeration Circuit, Indoor and
Outdoor Unit.
Figure 21
Procedure
1. Confirm that both the 2-way and 3-way valves are set to the opened position.
2. Connect the vacuum pump to 3 way valve's service port.
3. Evacuation for approximately one hour. Confirm that the compound meter
4. Close the valve (Low side) on the charge set, turn off the vacuum pump, and
5. Disconnect the charge hose from the vacuum pump.
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
indicates 0.1Mpa ( 500 M icrons / 29.9 in,hg.
confirm that the gauge needle does not move (approximately 5 minutes after
turning off the vacuum pump).