Panasonic U-16MF2E8 Service Manual

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3WAY SYSTEM
Outdoor Unit Repair Procedures
2
7. Charging Compressor Oil
When the predetermined amount of oil has been charged into the oil-charging tank, immediately close the lower
valve. Next, run the vacuum pump until the system pressure reaches lower than -101kPa(-755mmHg, 5 Torr).
Close the upper valve and then, stop the vacuum pump.
Do this operation quickly because compressor oil easily absorbs moisture from the
air.
CAUTION
• The hoses may be subject to internal pressure from the refrigerant inside the outdoor
unit. A Schrader-type push-to-release valve is provided at each connection port.
• Since the DPR valve opens at pressures of 2.5 MPa and above, be sure to connect the
DPR to the gas tube service port (low-pressure side).
CAUTION
(3) Charging compressor oil into outdoor unit
Connect the lower valve to the low-pressure outlet (with Schrader-type push-to-release valve) in the outdoor
unit to be oil-charged, and then connect the high-pressure outlet (with push-to-release valve) to the upper valve
via the manifold gauge valves (at Hi-pressure gauge side). In addition, connect the gas tube service port (with
push-to-release valve) to the DPR (Discharge Pressure Regulator). Carry out the connection work quickly to
avoid letting air enter.
Upper valve
Lower valve
Vacuum pump
Manifold gauge
Close Open
Close Open
Fig. 10
Upper valve
Lower valve
DPR
Fig. 11
Close
Close
Lo Hi
Vacuum pump
Oil
High-pressure outlet port
(for ø7.94mm-dia connector)
Low-pressure outlet port
(for ø7.94mm-dia connector)
Liquid tube service port
(for ø7.94mm-dia connector)
Discharge tube service port
(for ø7.94mm-dia connector)
Suction tube service port
(for ø7.94mm-dia connector)
Oil balance tube service port
(For 7.94mm-dia. connector)
Manifold gauge
Lo Hi
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Panasonic U-16MF2E8 Specifications

General

Brand	Panasonic
Model	U-16MF2E8
Category	Air Conditioner
Language	English