DCF-3000 Installation, Operation & Maintenance
DOM0000007, Revision A
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Page 4 of 7
Figure 2
WARNING:
Equipment should be shut down and
isolated from energy sources and other equipment
before any inspection or servicing to prevent risk of
shock or process fluid leakage.
FAILURE TO FOLLOW THIS WARNING MAY LEAD TO DEATH,
SEVERE INJURY OR PROPERTY DAMAGE.
1.
Disconnect all remote airlines running to the assembly, marking
all airlines before removing.
Isolate all sources of energy before
disconnecting any fitting.
Remove the center shaft connection
bolt (Figure 1, item 12) and the four bolts (Figure 1, item 1)
holding the twin assembly to the lid. Remove the twin assembly.
2.
Hand tighten packing compression wheel (Figure 1, item 6 or
13) to prevent lid from moving on the shaft . Remove lid
assembly with both upper and lower cleaning discs attached
.
3.
Remove the 8 bolts (Figure 1, item 9) from the lid. Inspect the lid
O-ring for damage and replace if necessary (Figure 1, item 11)
4.
With the lid assembly removed, wash down the inside of vessel
to remove all remaining process fluids and solids
.
5.
Remove ¼-20 hex nut and screw (Figure 2, item 8, 9) to
dismantle upper and lower cleaning disc from actuator rod.
6.
Inspect the cleaning disc blades while inside the unit. If the
spacing between the edge of the blade and the inside edge of
the plate is approximately 1/8
″
then the blades need to be
replaced. See Figure 3.
7.
Inspect both cleaning disc (Figure 2, item 10, 11) for excessive
wear. If replacement is required, refer to instructions included
with replacement disc.
8.
After complete inspection, and if necessary replacement, slide
the cleaning disc on actuator rod and plug it with ¼-20 screw
and nut. First install the upper cleaning disc (Figure 2, item 10)
and then lower cleaning disc. (Figure 2, item 11)
9.
Remove the filter element (Figure 2, item 12) from the housing
by removing two screws (Figure 2, item 6) of element hold down
plates (Figure 2, item 5) , and inspect the filter element for
damage. Damage may consist of deformation, dents, holes or
blockage.
10.
Clean the element from the outside. High pressure washing may
damage the filter element. Replace as needed
11.
Remove and inspect the element O-rings (Figure 2, item 7) for
damage and replace as needed.
12.
Clean and remove any debris from the bottom of the housing.
Inspect the purge chamber to ensure it is clean and free of large
debris.
13.
Re-install the element O-rings (Figure 2, item 7) and lower the
element into the filter housing. When the element reaches the
bottom, a small amount of force is needed to seat the element
into the base.
14.
Screw up the two element holding down plates to fix the element
15.
Place the lid “O” ring (Figure 1, item 11) on the upper body
flange, flat and centered.
16.
Replace lid and cleaning disc assembly on the filter housing.
Replace the lid bolt and tighten. (Figure 1, item 9)
17.
Replace the twin assembly insuring that the safety device is in
place of operating.
18.
Loosen the packing compression wheel (Figure 1, item 6 or 13)
to proper operating specification.
19.
Reconnect the airlines.
20.
Place the system back on line using proper plant procedures.
21.
Test the safety device by tripping it while the unit is in motion.
The unit should stop moving. If this does not work, lock the unit
out and contact Eaton customer service. If unit operates
correctly, reset the safety switch and put the unit back online.
For maintenance of other items such as lid seals, actuators, and
valves, see instructions supplied with repair kits.
Blade removal instructions
1.
Inspect the cleaning disc blades for wear and damage.
2.
To replace the blades, remove the two screws holding
the blade to the plate. Between the blade and the plate
there is a spring. This spring must be replaced when
the blade is replaced.
3.
Place a new spring into the pocket in the new cleaning
disc blade. Slide the blade onto the plate and insert
the two screws into the blade.
Figure 3
