Zanotti un0 010, Workshop Manual

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68
Cooling Circuit
3.7 KVC Hot Gas Bypass
Capacity Regulator
(d)
Release KVC valve from fixing brackets and remove all of which.
(e)
Flux nitrogen (approx. 0, 35barg) from LP service port, to prevent dirt and oxidation during welding
(f)
Fuse with brazer flame KVC welding line and disconnect old valve.
(g)
Clean pipe ends with a special brush and flow with dry nitrogen.
CAUTION
!
Never flow with normal air, it contains too much
humidity.
(h)
Braze KVC valve in position.
CAUTION
!
Wrap KVC valve in a
wet rag, which must be warmer than
ambient avoiding moisture
condensation.
(i)
Reinstall evaporator service ports
valves.
CAUTION
!
Lubricate valve
gaskets before.
(j)
Vacuum unit 3.2.3 Section.
(k)
Connect a vacuum gauge and check for leaks after a waiting time 3.2.5 Section.
(l)
Reinstall valve support brackets.
(m)
Charge unit with refrigerant 3.2.4 Section.