Master II Gun
Service Manual
12/21
2.0 Issue
Ref. NR-00021-ENG
http://www.gamapur.com/
Gun block unit and mix chamber
WARNING:
Before carrying out maintenance work on the gun, make sure that the unit
has been completely stopped, that all of the push buttons and the main switch are turned
off and that the unit is disconnected from the main power supply. The gun is a
component which works under pressure. No connection must be opened or
maintenance work be done on component subject to pressure until the pressure has
been completely eliminated.
1.
Remove the coupling
block.
2.
Use
a
cloth
dampened
with
solvent to clean the
contact surfaces and
the
seals
of
the
coupling block.
NOTE:
If any of the
valves must be replaced
due
to
breakage
or
deterioration, make sure
that they are completely
open before mounting on
the coupling block (that
the sphere is lodged
inside the valve body). If
not, it could damage the
valves at the time of
assembly.
PRECAUTION:
To avoid spilling the rest of the product which has accumulated in the
side cartridges onto the floor, always remove the coupling block and the side cartridges
on a waste vessel.
3.
Screw on the diffuser.
4.
Turn the isocyanate cartridge two turns anticlockwise.
5.
Turn the polyol cartridge two turns anticlockwise.
6.
Remove the central block by turning the locknut anticlockwise.
7.
Put the block in a vessel with gun cleaning solvent.
8.
To eliminate all product remains, put the gun block unit in a vessel with gun cleaning
solvent and use a brass brush.
PRECAUTION:
Use wooden or plastic utensils or a brass brush for cleaning. Do not
use metal utensils which can scratch the contact surfaces.
