Preparation For Operation; Final Check - Panasonic 2WAY MULTI U-16GE3E5 Main Parts Replacement

Compressor Replacement Procedure
(9) Pass the oil tube through the oil receiver hole, and secure it with a clamp.
(10) Connect the crankcase heater, sensor, and clutch connectors.
(11) Perform an air tightness test with nitrogen from the low pressure outlet and make sure there are no
leaks from the compressor flange.
Air-tightness test pressure 2.3 [MPa]
(12) After completing the air tightness test, carry out a purge.
Degree of vacuum
Set the valves to open, and carry out the purge from the low pressure outlet. After the purge has been completed,
cancel the valve open setting.

6. Preparation for operation

(1) Set each of the shutoff valves from the fully closed position to the fully open position. (Figure 10)
Shutoff valve
open/close
Status
(2) Turn on the power supply circuit breaker for the outdoor unit.
(3) Open the main gas valve, starting the fuel supply.
(4) Set the STOP SW (SW001) from STOP to NORM. (Figure 11)

7. Final check

(1) Running condition check
 Make sure that no abnormal noise or vibration occurs.
 Make sure there are no refrigerant leaks.
 Make sure that none of the attached parts are loose.
(2) Cleanliness check of the surroundings
 Make sure no unneeded items or trash is scattered around.
 Make sure no tools, etc. have been forgotten within the unit.
 Use rags to wipe up any water or oil that has accumulated in the bottom of the unit.
Caution
If there is belt deflection when you tighten the tension adjustment bolt to adjust the belt tension, the ribs of the
belt will be offset from the pulley, which may result in the belt slipping off. In particular, there is a high risk of the
belt slipping off if the ribs are offset at the locations indicated by the circles in Figure 9 because of the rotation
direction after operation starts. Be sure to support the belt with a hand while tightening the tension adjustment
bolt. Furthermore, make sure you check that the belt has not come off before performing a test run.
0.133 [kPa·abs]
1.0 [mmHg]
Fully open Fully closed
Figure 10
67
Figure.11
Figure 11