Discharging Compressor Oil - Panasonic U-8MF2E8 Service Manual
3-way vrf system
Hide thumbs
Also See for U-8MF2E8:
- Installation instructions manual (220 pages) ,
- Operating instructions manual (180 pages) ,
- Service manual & test run service manual (50 pages)
Table of Contents
2. Discharging Compressor Oil
Discharged oil can be used for checking the condition of the system. Based on the appearance and color of the
discharged oil, a judgment can be made on whether the system is operating normally or not.
2-1. Discharging Oil from Oil Separator
Recover the refrigerant from the outdoor unit following the procedure given in "4. Recovering Refrigerant. "
-System with 1 outdoor unit
Open the balance tube valve using the flathead screw driver.
-System with 2 or more outdoor units
Close the balance tube valve of other outdoor unit.
Install hoses as indicated on the equipment and feed nitrogen gas gradually to provide pressure to the system from
the low-pressure outlet and collect oil in a pan or container. (Fig. 2)
• The low-pressure outlet port is at the Hi: side of the left side.
CAUTION
• A faulty outdoor unit may remain pressurized.
Packless valve
or the like
The oil outlet port employs a Schrader-type push-to-release valve.
Be careful to avoid accidental oil release when using the port.
Manifold gauge
Lo
Hi
Container
Fig. 2
2 - 3
3WAY SYSTEM
Outdoor Unit Repair Procedures
Low-pressure outlet port
(for ø7.94mm-dia connector)
High-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)
2
- Quick Links:
- Indoor Unit
- Outdoor Unit
- Recovering Refrigerant
Hide quick links:
Table of Contents
