Prepare To Remove The Expansion Valve, Liquid Valve, Bypass Valve. And Waste Heat Recovery Valve - Panasonic U-16GE2E5 Main Parts Replacement

Expansion Valve, Liquid Valve, Bypass Valve and
Waste Heat Recovery Valve Replacement Procedure

4. Prepare to remove the expansion valve, liquid valve, bypass valve. and waste heat recovery valve.

(1) Remove the coil from each solenoid valve.
(2) Remove the bracket and rubber securing the pipe, along with the thermal insulation.
(3) Cover the areas around the welds with pieces of metal and thermal insulation in order to prevent burning
inside the unit.
(4) Use a welder ame to heat the welded joints of the pipes at the locations indicated by the arrows in
Figures 1 to 3, and then remove the expansion valve liquid valve, bypass valve and waste heat recovery
valve.
* When soldering, be sure to replace with nitrogen gas.
Figure1-1: Models 45.0 to 71.0KW Type
Figure 1-3: Model 85.0KW Type
Waste-heat recovery valve
Liquid valve
Expansion valve
Bypass valve
(except 3WAY)
Waste-heat recovery valve
Liquid valve
Expansion valve
Bypass valve
Liquid valve
Waste-heat recovery valve
Figure1-2: 3 WAY Multi
43
Small heat exchanger
expansion valve
Large heat exchanger
expansion valve
Bypass valve