This procedure tells you how to replace the standard aluminum-body air purge solenoid with a brass-body solenoid that you can clean. This procedure only applies to machines that have a consolidated air-lubrication manifold (CALM) system.
Press [Power Off] on the machine, then Lockout/Tagout the main circuit breaker.
Open the air/lubrication panel door.
Turn off the main air valve .
Pull the ring on the pressure-relief valve  on the air/lubrication manifold to release the air pressure from the system.
Disconnect the solenoid electrical connector  from the location marked PURGE on the air lube system connector bracket .
Slide the cable channel cover  up.
Remove the purge solenoid cable fromthe cable channel.
Disconnect the discharge pipe  from the air purge solenoid .
Discard the discharge pipe.
Rotate the elbow joint  approximately 45 degrees to the left to get access to the air purge solenoid.
Rotate the solenoid  to remove it.
Remove the short nipple  from the bottom of the elbow fitting.
Discard the short nipple.
Rotate the elbow  back to its original vertical position.
Install the long nipple (7" (178 mm) for UMC-750, 5" (127 mm) for other applications)  included in the kit into the bottom of the elbow fitting.
Connect the muffler , included in the kit, to the solenoid.
Make sure that the flow arrow  on the solenoid points down at the discharge pipe.
Rotate the solenoid body 90 degrees so you can tighten it onto the long nipple.
Install the solenoid  onto the long nipple .
Insert the cable  into the large hole  in the bottom of the air/lubrication cabinet.
Rotate the solenoid body  so that the cable points toward the hole.
Make sure that you do not damage the cable
Route the cable behind the oil reservoir and up to the air lube system connector bracket.
Connect the cable  to the connector marked PURGE  on the air lube system connector bracket.
Put the cable behind the cable channel cover .
Slide the cable channel cover down and into position.
Turn on the main air valve .
Make sure there are no leaks.
Unlock the main circuit breaker. Remove the lockout tag.
Power on the machine.
Change Setting 243, AIR WATER PURGE ON-TIME (SEC) to 0.25.
To test the installation, wait for the time period set in Setting 242, AIR WATER PURGE INTERVAL (MIN) and listen for the purge valve to open.
The valve opens for 0.25 seconds.
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