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Konus Burners, Primary, and Vat Pumps

3 Manual Valve

During normal operation, the valve should be in the closed position.
When necessary to change the PP2 pump, this valve should be
opened to allow the fluid to be ported back to the drain tank by the
drain pump. Please refer to the “Isolation and Change Out
Procedure” for the sequence that this valve is opened and closed.

4 Manual Valve

During normal operation, the valve should be in the closed position.
When necessary to change the PP1 pump, this valve should be
opened to allow the fluid to be ported back to the drain tank by the
drain pump. Please refer to the “Isolation and Change Out
Procedure” for the sequence that this valve is opened and closed.

5 Manual Valve

When the PP2 primary pump is being used to supply oil to the thermal
oil circuits, this valve is open. When necessary to bleed the oil out of
the pump for replacing, the valve should be closed. Please refer to
the “Isolation and Change Out Procedure” for the sequence for
opening and closing this valve.

6 Manual Valve

When the downstream PP2 primary pump is used to supply oil to the
system, this valve should be in the open position. The valve should
be closed when necessary to change the pump or filter. Please refer
to the “Isolation and Change Out Procedure” for the sequence of
opening and closing this valve.

Troubleshooting Thermal Oil Systems Page 19