Miller Electric XMC 4000 Circuit Breakers, Filling Coolant Tank, Operating cooler when coolant

3-7. Circuit Breakers

1

2

Circuit breakers with numbers 7 and 10 are placed inside the welder on the wire feeder side as shown.

1 Circuit Breaker 7

Protects the auxiliary 115 volt AC used for the water cooling unit in- side the power source, from over- load.

2 Circuit Breaker 10

Protects the auxiliary 24 volt AC used for the wire feeder unit inside the power source, from overload.

3-8. Filling Coolant Tank

1

2

.Operating cooler when coolant

is low can damage cooler and torch components. Always have proper amount of coolant in tank and use coolant recom- mended by the manufacturer.

1Coolant Tank Cap

2Coolant Level Indicator

.Remove shielding gas cylinder

from rear of unit to fill coolant tank.

Unscrew cap from tank.

Use table to select proper coolant, and fill tank until coolant appears in upper half of indicator.

Check coolant level after attaching torch coolant hoses and running cooler. Be sure coolant appears in upper half of indicator. Add coolant if necessary.

Rear View

Application	GTAW Or Where		GMAW Or Where	Where Coolant Contacts
	HF* Is Used		HF* Is Not Used	Aluminum Parts
	MILLER Low Conductivity		MILLER Low Conductivity	MILLER Aluminum
	Coolant No. 043 810**;		Coolant No. 043 810**; Or	Protecting Coolant
	Distilled Or Deionized Water		MILLER Aluminum Protecting	No. 043 809**
	°	°	Coolant No. 043 809**;
	OK Above 32	F (0 C)	Distilled Or Deionized Water
Coolant			OK Above 32° F (0° C)

*HF: High Frequency Current

**MILLER coolants protect to -37°F (-38°C) and resist algae growth.

YUse of any coolant other than those listed in the table voids the warranty on any parts that come in contact with the coolant (pump, radiator, etc.).

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