Model 3710 Plasma Control Console
Operator’s
Manual
_____________________________________________________________________________________________________________________
Issued: 03/11
Page
55
A6.2 Disable the purge switch by placing a jumper across
wires
3 and 5 on relay K1
.
The jumper is installed to override the safety circuit. THE JUMPER
MUST BE REMOVED UPON COMPLETION OF THE
CORRECTIVE ACTION.
A6.3 Pull the door interlock switch out, allowing door to remain
open.
A6.4 Reconnect console power, turn the gases on, and re-
pressurize the console.
A6.5 Use leak-detecting solution to pinpoint the location of the
leak. Check fittings, hose connections, regulators and other
items.
Avoid getting leak-detecting solution on electrical contacts or
wiring!
A6.6 When the leak is located, disassemble and inspect the
affected components. Replace any worn or defective items.
A6.7 Reassemble the unit, using Loctite #242 or equivalent
thread locking compound on all threaded components.
DO
NOT use Teflon tape as a sealant!
Replace any leaking
hose or tubing components, as they cannot safely be
repaired.
A6.8 Disconnect and lock/tagout console power.
Remove the
jumper installed in step A4.2
and close the console door.
A6.9 Repeat leak test in sections 1 through 3 to verify that the
problem is corrected.
A6.10 Fill out and affix leak check certification sticker in a visible
location on console front. Next test due date should be one
year from date of current test.
If ANY leaks cannot be corrected, IMMEDIATELY shut down and use
a lockout/tagout system to disable the console and contact the Praxair
Thermal Spray Products Service Department at 603-224-9585.
