Swagelok 8HPH Series, User Manual

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26 Series 8HPH Weld Head User’s Manual
Performing Periodic Maintenance
As the weld head is repeatedly used, parts will begin to wear.
Extensive testing has identified these baseline maintenance
parameters, which can be used to approximate when certain tasks will
need to be done.
This is dependent on the size of work pieces typically being welded
with the machine.
For series 8HPH machines being used primarily to weld 1/4 in.
(6.35 mm) or smaller tubing, periodic maintenance should be
conducted every 10 000 welds.
For series 8HPH machines being used primarily to weld larger than
1/4 in. (6.35 mm) tubing, periodic maintenance should be conducted
every 3 000 welds.
Replace all worn parts. Brush and curved disc springs must be
ordered for periodic maintenance. For detailed part drawings and
ordering information, see the
Parts Drawings at the end of this
manual. Spare parts are available through your authorized Swagelok
sales and service representative.
Series 8HPH Cleaning and Inspection
Fixture Disassembly and Cleaning
1. Verify the rotor is in the home position.
2. Disconnect the unit from the power supply.
3. Loosen the eight screws holding the metal shroud in place.
4. Push the handles to the not locked/closed position.
5. Remove the tool change knob, by turning it counterclockwise.
6. Remove the metal shroud by lifting it straight up off of the base.
See Figure 42.
7. Push the handles and tool change lever to the tool change
position.
8. Remove the movable side plates, thrust bearing, adapter hub, and
arc shield assembly.
Figure 42 Removing the Metal Shroud
Tool Change Knob
Handles
Screws
(Qty. 8)
13-170.indb 26 2/1/13 1:46 PM