UNITED CPC 12000, Руководство по эксплуатации и обслуживанию

Страница: 10 / 45

Page | 10
3. Pull the locking-pin outward and slowly release the cam assembly by rotating the cam
handle towards the back of the machine. If pressure begins to release stop until
pressure dissipates. Continue until cam is completely relaxed and then proceed to
opposite side.
4. Rotate barrel BARREL REV until level. Jog turret JOG REV 1-2 inches upwards until seam
is even with lower door frame. Release center latch. Do Not release prior to dissipating
pressure.
5. Slide the cam assemblies in toward each other and remove the lid by sliding the lid
across the lower door fame into the lid cradle. Do Not lift the lid injury could result.
The use of a pressure relief valve: It is not suggested to use any form of pressure relief valve on the
barrel assembly due to the nature of the process. The processes used in the CPC typically grind metal,
ceramic or plastics in a soapy water mixture. Once this mixture dries it quickly cakes and becomes
hard similar to the composition of cement. This would disable any type of pressure relief valve.
Consequently, an operator might feel comfortable that the pressure is relieved and open the barrel
without taking the precautions required, only finding that the valve had malfunctioned and the barrel
was still under pressure. By following the above procedure, the CPC poses little risk to the operator.
If a process must be continually run that generates an excessive amount of heat, raise the water level
within the barrel to an inch or more above the media level to help aid in cooling the media. On
extremely long cycle times, 60 minutes or more, incorporate what is known as a rinse and recharge
into the process. In this manner, half way through the cycle the system would be stopped and the
barrels could be flushed with water (without removing any parts or media) and recharged with soap
or compound. This helps keep the water temperature from reaching dangerous levels.
NOTE: Excessive heat will reduce the service life of the barrel linings. Highly aggressive processes should have periodic
intervals during which the barrels are flushed with cool water to minimize the heat generated within the barrel. A compound
recharge will also be added at this time to maintain the cleaning capabilities throughout the remainder of the process.
4.3.7 Loading Barrels
Load the predetermined production part lot into the barrel. Press MATERIAL HANDLING in the upper
right hand corner of the Manual Mode screen (Figure 4.2). The
interface will change to the screen illustrated below. NOTE:
Generally the production parts are loaded into the barrel prior
to any media or compound. In some cases such as extremely flat
parts water locking or sticking to the barrel lining could occur. If
this is the case it maybe necessary to load in reverse order.
4.3.8 Material Handling
Once in the Material Handling screen the operator can load