7
Purge Chamber Manual
OPERATION:
Ensure there is sufficient high purity argon in the purge chamber supply bottle
and the torch gas supply bottle to complete all welding operations. Failure to
do this will result in the introduction of air during a bottle change which will
require re-purging of the system. Check to ensure that all gas lines to the
chamber, the welding machine, and regulator/flowmeter are tight. Also, check
to ensure that all accessory ports that are in use are properly taped. Check
gloves for any damage.
Load the components into the chamber and close the zipper. Purge out the
torch lines. The chamber can be pressed down around the parts to expel the
majority of the air. Make sure that the exhaust vent on the top of the chamber
is closed. To complete the vacuum process, one of two methods can be used:
1.) "Y" Vacuum: Compressed air is blown through the inlet of the "Y" which
creates a venturi effect, extracting all of the remaining air in the chamber, or
2.) Electric Vacuum Pump: Plug pump into 115VAC circuit, leave on until all
air is vacated from the chamber.
Note: Make sure when performing a vacuum that the vacuum valve is open
and the gas valve is closed on the gas "Y".
At this time, turn on argon gas supply, open exhaust valve on top of the
chamber, making sure vacuum valve is closed and gas valve is open on gas "Y".
The argon flow rate should not exceed 35 cubic feet per hour, otherwise
turbulence will cause mixing of the argon shielding gas with the air in the
chamber. When the chamber is completely inflated a test weld on a piece of
scrap material should be performed. If any discoloration or contamination is
present, repeat the purge process.
QUESTIONS:
Any user requiring further advice in any matter concerning installation,
operation, maintenance or safety can call or write:
CK Worldwide, Inc.
P.O. Box 1636
Auburn, WA. 98071
tel: + 1 253 854 5820
fax: + 1 253 939 1746
www.ckworldwide.com
[email protected]
