Shrinkfast 998, Operatin

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III. Which Tank To Use
Two types of tanks are commonly available:
liquid withdrawal and vapor withdrawal. It is
crucial to use the vapor withdrawal type.
Never try to run the gun on a liquid with-
drawal tank.
Using a liquid withdrawal tank will clog the
orifice filter and may result in an extremely
dangerous long flame.
Tanks are available in 6, 8, 10, 20, 30, and
40 lb. Sizes. The gun will run on a 6 lb.
Tank if used only intermittently. Larger tanks
should be chosen for continuous use.
Tank pressure depends on the temperature
of the tank. At room temperature (72°F) the
pressure is 110 PSI and drops to 22 PSI at
0°F.
When in use, the temperature of the tank
drops due to the evaporation process of liq-
uid propane to propane gas.
After prolonged use the temperature of the
tank may drop to 0°F usually accompanied
by icing on the outside, and the propane
pressure drops below 15 PSI. DO NOT RUN
THE GUN WITH THE PRESSURE BELOW 15
PSI.
Small or nearly empty tanks ice up faster
than large, full tanks. Typically, a full 30 lb.
Tank , if run continuously, will run 90 min-
utes before it ices up. If the production
rates demand continuous use, the following
methods may be employed:
1.
Multiple tanks. Switch the gun from one
tank to another.
2.
Fan. An ordinary desk Fan fan at the
tank. The air flow around the tank will keep
it from icing up.