CC8 roof-top air-conditioning system 4 Installation instructions
411
For 4.3 Install the screw system
– Remove anti-corrosive coatings from metal components (nipples and fitting) using a cleaning product
(for example petroleum ether).
– Do not strip the hose. Clamp the threaded fitting in place and screw the hose into the socket as far as it
will go by turning it anti-clockwise, then turn it back (Fig. 404).
– Apply refrigerator oil (PAG) to the hose inner tube and nipple thread (see figure).
– Holding the nipple at the hexagon, screw it into the socket and the hose by turning it clockwise until there
is a gap of approx. 1.0 to 1.5 mm between the hexagon and the socket. Do not tighten it (Fig. 404).
– Ensure that the hose is in perfect condition; make sure there are no constrictions or bulges, particularly at
the transition to the fitting.
– Blow nitrogen or dry, clean compressed air through the hoses.
– Seal the hoses and examine them for leaks in a water bath using nitrogen or dry compressed air (leak test
pressure approx. 35 bar) (see Fig. 405).
WARNING
Only carry out this test with the appropriate safety equipment in place.
To Next Page
Loading...
