Master II Gun
Service Manual
9/21
2.0 Issue
Ref. NR-00021-ENG
http://www.gamapur.com/
This
MASTER II
series model comes with a head turning mechanism so that it can be turned
according to the inlet position of the product hoses.
Do the following to make the change:
1.
Completely close the manual valves by turning them clockwise.
2.
To eliminate the pressure from the gun, press the trigger and project with the gun until the
projection fan begins to narrow.
3.
Press the blocking device and turn it clockwise to leave it in blocking position or mode
4.
Close the air inlet valve.
5.
Remove the coupling block from the gun. Use a cloth dampened in solvent to clean the
contact surfaces and the seals of the coupling block.
6.
Turn the isocyanate cartridge two turns anticlockwise.
7.
Turn the polyol cartridge two turns anticlockwise.
8.
Turn the locknut two turns anticlockwise.
9.
Pull lightly on the mixing head and turn it 180º (half a turn) clockwise.
10.
Gently press the head until it is seated on the throat of the sleeve and cannot turn.
11.
Tighten the locknut on the throat of the sleeve to immobilise the head.
12.
Tighten the two side cartridges.
13.
Connect the coupling block to the mixhead and fix it firmly with the central screw. Pay
attention to the seating of the seals.
14.
To leave the gun operative, carry out the following steps for
Installation and Start-up
.
NOTE:
Always turn the head clockwise to pass from one position to another.