Magnum Venus Plastech CFH-4000 - Manual (Page 5)

5
CFH-4000 IN-LINE RESIN HEATER MANUAL
OPERATION
To operate the CFH heater, just set the temperature control to mid-position or to the
desired position if the setting is known.
Heater is now ready.
To preheat the CFH-4000-AI (system with air interlock) press the preheat button and
hold until heater block feels warm to the touch. This insures resin is heated from
start-up to stop. If this system sets idle for a long period of time it may need to be
preheated again before use.
Using heat with polyester resin systems allows control of the spray pattern through
reduced viscosity while breaking up material particles, thereby giving better, more
desirable wetting characteristics. As it is highly accurate, material can be controlled
within plus or minus 3° F in continuous use.
If the spray pattern is too coarse and narrow, set heat higher, If too fine and thin, set
heat lower. Once resin in hose has been replaced by resin in heater, it will be
possible to determine if block heat has been set properly. The thermometer on outlet
side will also determine what temperature it is operating at. DO NOT EXCEED 135° F
OUTLET TEMPERATURE.
(Proper setting will vary with ambient room temperatures, flow rates and
characteristics of each resin or gel coat)
When highly promoted resins are used, it is advisable to pump cool resin through
heater after power has been removed from the heater. These resins could easily gel
if left at high temperature in block for an extended period. Anticipate your cut-off and
you will be able to use it all. Use preheat button again before starting.
When used on automatic heads, the heater should be connected to automatic gun
trigger circuit; if preheat transfer pump, connect to pump control.
CHAPTER
2