Re-Installation While The Outdoor Unit Need To Be Repaired - Pioneer WAE012AMFI15RL Service Manual

manifold hose with the push pin to the 3-way
valve's gas service port.
3). Air purge of the charge hose.
Open the Low side valve of the manifold slightly
to purge air from the charge hose for 5 seconds
and then close it quickly.
4). Set the 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(14.5Psi).
6). Set the 3-way valve to the closed position
immediately
Do this quickly so that the gauge ends up
indicating 0.3Mpa(43.5Psi) to 0.5 Mpa(72.5Psi).
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 18N.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 2-way valve approximately 45' until
the gauge indicates
Mpa(72.5Psi).
6). Disconnect the charge set and the charging
cylinder, and set the 2-way and 3-way valves to
the fully open position
Be sure to use a proper size hexagonal (Allen)
wrench to operate the valve stems.
7). Mount the valve stems nuts and the service
port cap
Be sure to use a torque wrench to tighten the
service port cap to a torque 18N.m.
Be sure to check the gas leakage.
7.7 Re-installation while the outdoor
unit needs to be repaired
1. Evacuation for the whole system
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). Evacuate for approximately one hour.
Confirm that the pressure gauge indicates
-0.1Mpa(14.5Psi).
4). Close the valve (Low side) on the charge set,
turn off the vacuum pump, and confirm that the
gauge needle does not move up (approximately
15 minutes after turning off the vacuum pump).
5). Disconnect the charging hose from the
vacuum pump.
25
0.3Mpa(43.5Psi) to 0.5