Draining the cooling circuit
Some eldec induction heating systems include check valves in the cooling circuit that
prevent the draining of the cooling circuit against the direction of flow. To overcome this
obstacle, eldec recommends all systems be emptied in the direction of flow by blowing
compressed air into the water inlet at a pressure not to exceed 20 psi. If your system does
not include a check valve, you may blow compressed air into the system from the water
outlet side.
Wear safety goggles and appropriate clothing.
Drain the cooling circuit after long use and before cleaning or before moving – especially
shipping in cold climates.
•Turn offthe main disconnect.
•Disconnect the water supply.
•Drain the system via the drain (water outlet) of the cooling circuit.
•Blow compressed air into the water inlet at a pressure not to exceed 20 psi.
•For generators without check valves (most single output generators only) compressed air
can be blown against the flow direction. This should still be limited to 20 psi.
Cleaning the cooling circuit
Clogged cooling circuits can lead to generator damage and equipment malfunctions.
Consult eldec’s service department for more details:
Phone: +1 (248) 364-4750
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