Zanotti un0 080 - Page 75

64
Cooling Circuit
3.6 CPR Crankcase Pressure
Regula
tion Valve
(e) Release CPR valve from fixing
brackets and remove all of valve
supports.
(f) Remove valves from EVP
evapor
ator and LP service port
s.
(g) Flux nitrogen approx. 0, 35barg
(5.
1psig) from
evaporator service
port
, to preven
t dirt and oxidation
during weldin
g operations.
(h) Disconnect old CPR valve with
br
azing flame.