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Water/Spray Tanks UGE014/0999
4-2 OPERATION
The WT tank provides cooling through tank water flow, while
the ST spray tank cools with water flow and water sprayed
onto the extrusion Immersion rollers inside each tank cham-
ber keep the extrusion positioned for even cooling.
Determine the cooling mode you will use.
The best cooling mode and roller position for your profile
depends upon your material and process.
●●
Immersion cooling: The extrusion should be fully
immersed in the tank water. The immersion rollers are
usually positioned above the extrusion to keep it sub-
merged.
●●
Spray cooling: The extrusion is cooled by water
sprayed over its surface. An inch or two of runoff
water flows below the extrusion. The immersion
rollers are usually positioned below the profile.
Make sure the extruder and puller are ready.
The extruder should be discharging melt or extrudate that
is up to the correct temperature. Set the extruder and
puller at minimum speed.
Center the tank with the extrudate. During
installation, you aligned the tank with the extrusion line.
Before each operation of the tank, you should fine tune
the height and side-to-side position of the tank to align it
with the center of the extrudate.
Height Adjustment:
Looking down from above the tank, turn the small hand-
wheel to move the tank toward or away from the operator
side until it aligns with the center of the extrudate as it
exits the die.
Side to Side adjustment:
Kneeling at the upstream end of the tank at eye level with
the die, turn the large, spoked wheel to adjust the tank
height until it aligns with the center of the extrudate.
Turn on the water supply to fill the tank.
Adjust the standpipe for the water level you want to main-
tain. If you have the optional recirculation system, make
sure the water level in the reservoir is above the pump
input before proceeding.
Move the tank downstream from the die. Use
the large linear actuator handwheel to slide the tank about
4-8 inches downstream from the die or additional sizing
equipment.
PREPARING FOR
OPERATION
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