Sterlco 6017 Series, Operation And Installation Manual

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Page 30 6017 Series Hot Oil Large Temperature Control Units
10. If any water is present in the system, it must be boiled off before continuing
operation. Select a setpoint of 215°F (102ºC) and observe the reservoir tank vent for
any signs of escaping steam. Continue to run at 215ºF (102ºC) until no more steam
appears and pressure has stabilized.
11. When fluid level has stabilized and air and water are purged from the system, open
the Return Valve all the way. And select a setpoint of 250°F (121°C).
12. If the fluid level and pressure remain stable close the Blow-Off Valve. Do not open
the Blow-Off Valve above 250°F.
With the system properly purged, only 4 - 6" of fluid should be visible in the sight glass. This
will allow for expansion of the fluid as it heats, as well as capacity for process fluid when the
pump is reversed and fluid withdrawn from the mold.
The 6017 is now ready for use. All that is required is to select a process set point on the
controller as described in the controller manual.
NOTE: If all traces of water are not removed from the system, severe cavitation may occur at
elevated temperatures. Indications are a “gravely” sounding pump, fluctuating or dropping
pressure, or rapidly rising fluid level in the expansion tank. Repeat Steps #9-12 if this occurs.
UNIT START-UP (WITH AUTOVENT SOLENOID)
The highly engineered controls and controller make this unit almost self operating. Before you
can begin heating, it will be necessary to perform the following start up procedures. This will
ensure that all air is vented from the system to prevent fluid degradation and damage to the
heater. The autovent solenoid operates just like the manual Blow-Off valve, however it opens
electrically and for only a specified time. The benefit is that it vents every time the unit is started
and it will automatically shut off after a predetermined amount of time. It is also convenient,
because the vent button is located on the front of the unit. It has the added safety of being
automatically prevented from opening above 250°F by a safety thermostat.
1. Open the Return Valve. Make sure the drain valves are closed and plugged.
2. Add fluid to the reservoir tank until the level is near the top of the sight glass.
3. Depress the "Pump Start" button to start the pump. Check motor rotation by
observing the pressure gauge. If the gauge indicates positive pressure, rotation is
correct. If not, disconnect power and reverse the incoming power leads.
4. Close the Return Valve inside the unit.
5. As fluid is drawn out of the reservoir tank to fill the process, the fluid level will fall in
the tank. Continue to add fluid to maintain the level about 4 inches from the bottom
of the sight glass.