Sterling 6017 series installation manual Unit START-UP with Autovent Solenoid

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allow for expansion of the fluid as it heats, as well as capacity for process fluid when the pump is reversed and fluid withdrawn from the mold.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.

Page 30 6017 Series Hot Oil Large Temperature Control Units