Pioneer YN018GMFI16M2D, Руководство по обслуживанию

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6.6 Re-installation while the indoor unit
needs to be repaired
1. Collecting the refrigerant into the outdoor
unit.
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 properly sized hexagonal
(Allen) wrench to operate the valve stems.
2). Connect the low side hose of the charging
manifold to the 3-way valve's gas service
port.
3). Air purging the charging hose.
Open the handle Lo side valve of the
manifold slightly to purge air from the
charging hose for 5 seconds and then
close it quickly.
4). Set the 2-way valve core to fully closed
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 core to the fully
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 charging set and tighten the
2-way and 3-way valve’s stem caps.
Use a torque wrench to tighten the 3-way
valve's 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
valve cores are set to fully closed position.
2). Connect the charging 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 valve on the charging cylinder and
valve of the charging 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 this for 3
more times.
After purging the air, use a torque wrench to
tighten the flare nut on the 2-way valve.
4). Check for any 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
0.3Mpa (45Psi)
to 0.5 Mpa (70Psi). .
6). Disconnect the charging set and the
charging cylinder and set the 2-way and 3-
way valve cores to the fully open position
Be sure to use a proper size hexagonal (Allen)
wrench to operate the valve stems.
7). Mount the valve stem caps 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.