Miller Electric OM-227 398D manual Shielding Gas Coolant Supply For Water-Cooled Models Only

5-3. Shielding Gas

2

1

3

5-4. Coolant Supply For Water-Cooled Models Only

1

3

2

1Shielding Gas Cylinder

2Valve

3Gun Trigger

Open valve on cylinder just before welding.

Gun trigger turns weld output and gas flow on and off (see Section 5-1).

Close valve on cylinder when finished welding.

Ref. 151 666-F / 804 545-B

1Coolant Supply

2Coolant “In”

3Coolant “Out”

See table below for coolant guidelines.

Turn On coolant supply before welding.

Turn Off coolant supply when finished welding.

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

Coolant

*HF: High Frequency Current

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

Ref. 150 755-A

OM-227 398 Page 14