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ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277 Service Fax: 317-885-8683
web site: www.AdvantageEngineering.com
Service Department email: [email protected]
TROOPER : Negative Pressure System
above 180°F (82°C). For comparative temperatures and pressure,
see Appendix “Boiling points of water”.
C.
For proper operation with a mold heater, it is essential to make all
connections as shown in this diagram.
D.
Mold heaters are pressurized by their open supply line, the drain
remains closed except for cooling. Therefore, the incoming supply
pressure becomes the minimum pressure of the system. In this
situation, if the system pressure exceeds the back-pressure
pumping capabilities of the unit, then the supply pressure must be
reduced.
E.
As shown in the diagram, the purpose of the external regulator on
the mold heater supply line is to control the total pressure in the
system. The flow control valve allows a constant relief of pressure
downstream of the regulator even when the mold heater does not
need cooling or the drain is shut off.
F.
Start up procedure - mold heater with TROOPER
1.
Set the TROOPER regulator to maximum vacuum (screw
backed out).
2.
Adjust the mold heater regulator as high as possible without
over loading the TROOPER.
3.
Fully open the flow control by-pass valve.
4.
Open the supply and drain valves on the mold heater.
5.
Open the ‘DRAIN’ line on the TROOPER. ALWAYS OPEN
THE ‘DRAIN’ LINE BEFORE THE ‘SUPPLY’ ON THE
TROOPER.
6.
Open the ‘SUPPLY’ line on the TROOPER.
7.
Turn power on to TROOPER.
8.
Turn power on to mold heater. If necessary, increase
pressure delivered by mold heater supply regulator until
there is sufficient pressure to start the mold heater.
9.
Adjust the TROOPER regulator for minimum vacuum
required to stop the mold leak. Do not over adjust.
10.
Slowly close the flow control by-pass for the minimum
amount that allows the TROOPER to run continuously.
Never leave the flow control completely closed.