Service Manual
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Issue 3.1
Ref. NR-00019-ENG
http://www.gamapur.com/
Inlet supply filters
The filter bodies have a filter screen that prevents solid particles from entering the unit. Inspect
the filters each day as part of the machine start-up, and clean them. Replace the filter screen if
necessary.
Isocyanate is a product that crystallizes with ambient moisture or freezing. If the storage and
transfer is correct and the operating procedures are respected, the risk of contamination of the
Isocyanate filter will be minimized.
NOTE:
Clean the Isocyanate inlet filter before the daily start-up; it should not be cleaned
after the machine has been stopped for the day. Immediately beginning to project after
cleaning the filter reduces the risk of absorption of moisture and the possibility of
contamination through the reaction with the solvent used in the cleaning operation.
To check the product inlet filters, proceed as follows:
a) Disconnect the unit from the power supply and close the inlet ball valve from the filter
you wish to check.
b) Place a suitable vessel under the filter to collect the product coming out on removal.
Carefully loosen the filter stopper to allow the product to be emptied into the vessel
below. Completely unscrew the stopper.
c) Remove the seal, the spring and the mesh and clean it all with the solvent used for
cleaning the gun. Dry it all and check that the mesh is not obstructed. The holes in the
mesh must be completely free. Replace the mesh if more than 10% of the surface is
obstructed.
d) Refit the mesh, the spring and the seal. Screw on the stopper.
e) Open the product entry valve of the filter, make sure there are no leaks and proceed
with the normal operation.
