evolution G-35 H
Service Manual
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Issue 1.9
Ref. NR-00103-ENG
http://www.gamapur.com/
Isocyanate pump lubrication system
Each day, inspect the lube reservoir of the Isocyanate pump and check the condition of the
DOTP. Replace the oil when it shows changes in color or signs of solidification.
Oil solidification is the result of the absorption of moisture and the maintenance interval will
depend on the working conditions. The closed circuit system reduces contamination.
Oil discoloration is due to the small film of Isocyanate that lies on the pump shaft during the
pumping operation. If the gaskets and the seals are in a good condition, the plasticizer will not
have to be changed so frequently.
To replace the plasticizer, proceed as follows:
a) Project the gun until the Isocyanate metering pump is placed on the right hand side.
Press the NORMAL key to interrupt the working cycle. The pushbutton led will go out.
b) Press the MOTOR and POWER CONTROL keys and turn the general switch OFF.
Disconnect the machine from the power supply.
c) Remove the tank from the support, unscrew the lid, remove the non-return valve of the
suction hose, empty the contaminated plasticizer in a suitable vessel and refit the non-
return valve in the suction hose.
d) Clean the tank, fill it with DOTP, screw on the lid and refit the tank in the support. The
system is auto-suction and does not need priming.