Projection Gun novaG-M
Service Manual
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1.5 Issue
NOTE:
The product hoses have been distinguished with red and blue in order to allow
them to be rapidly identified. The red corresponds to the Isocyanate hose and the blue
corresponds to the Polyol hose. However, to avoid connection errors, the coupling
connectors of the Isocyanate and Polyol hoses are of different sizes to make it
impossible to swap the connections.
5.
Open the manual air valve.
6.
Pressurise the unit and make sure there are no leaks in the gun.
7.
Squeeze the trigger several times to make sure the needle moves correctly.
NB:
The novaG-M Gun gives an excellent mixing quality and a perfect fan, when the
remains of the two mixed chemical products are totally eliminated from the mix chamber
with the self-cleaning needle.
It is absolutely essential that when the needle closes, it makes perfect contact with the
internal spherical surface of the PCD.
To achieve a suitable contact, the novaG-M Gun has an adjustment system.
Pay special attention when adjusting, for excessive contact can cause early wear and
damage to the needle. Little contact can leave product remains in the cavity, causing
incorrect mixture and fan deformation.
The approximate size that should protrude from the needle tip module (
measurement” A”
dimension) is 2.2 mm for 0.98 and 2.4 mm for 1.25 (see Figure. 4).
Figure. 4
Figure .5
8.
Adjust the needle in the firing position as indicated in the following:
a. Unscrew the Needle Regulation Nut Blocking Screw by turning it anti-clockwise
as show the
