Magnum Venus Plastech HIS SUPERCHARGED - Manual (Page 13)

SUPERCHARGED H.I.S.™
CREATING A PROPER SPRAY PATTERN
n
If fan is misting or fuming and a heavy white looking froth appears in
the resin that does not disappear, the operating pressure may to too high for
the nozzle and resin being used.
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A good consistent spray fan will have slight “horns” on the outside
edges. It will have the correct angle for the nozzle used, very little misting, or
excessive fumes being generated. NOTE: A slight frothing
may occur but should dissipate in approximately 1 to 2 minutes.
Three major factors in creating a proper spray pattern are:
1. Resin temperature
Resin at proper temperature as indicated in the resin manufacturer’s
material data sheet will eliminate many adjustments.
2. Correct nozzle
Numbers marked on each nozzle will inform you of nozzle angle and
approximate output. A variety of nozzles are available. Consult the MVP
nozzle chart or contact your local MVP distributor. NOTE: A good rule of
thumb is to always increase nozzle size rather than air pressure for greater
output.
3. Air pressure
Additional air pressure should only be used after option 1 and 2 have
been checked. Increasing or decreasing air pressure should only be done to
achieve correct fan pattern and not as a means of controlling output. Most
misting, fuming and fogging are a result of incorrect air pressure settings.
Once correct settings have been achieved, observe fan to determine if resin
is being delivered evenly without any “pulsation.” If no pulsation is observed,
the system is ready for operation.
If pulsation occurs:
• Check and clean resin filter
Increase back pressure in gun by doing one or a combination of the following:
• Using Critical Mix Turbulent Mixer (part #55000-1)
• Reducing nozzle orifice size (For nozzle options, consult your local
MVP Distributor.)
•
Increase operating pressure
9
The Critical Mix Turbulent Mixer (part #55000-3) is
always recommended when operating pressures are
below 60 psi.
NOTE