AAF International Type LVN RotoClone - Manual (Page 3)

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3.3 To Stop RotoClone
A. Press exhauster motor “stop” button.
B. Turn off water supply. Even on units supplied with solenoid
valves, it is recommended that a manual valve be placed in the
water supply line, prior to the RotoClone, for maintenance
purposes and occasions where the RotoClone will be idle for
extended periods of time.
4.0 Maintenance Instructions
4.1 Removal of Collected Material
In general, the Model LV RotoClone is best suited for light or
moderate dust loadings such that the interval between each sludge
removal is of a reasonable length. The required cleaning interval can
be determined for any given RotoClone installation by using the rule
shown below.
Cleanout interval established must be frequent enough to
prevent collected material from exceeding a depth of 6"
(2" for light metals).
The sludge depth may be checked by probing through the access
door periodically during the first week of operation. At the end of the
week, inspect the unit to determine the depth of sludge accumulation.
Based upon this inspection, a fixed schedule should be established
for regular sludge removal.
Note: RotoClone may be cleaned without draining.
A. To Drain RotoClone
1. Ideally, the RotoClone should be shut down for a few hours
prior to draining to allow solids to settle.
2. Open the drain slowly such that flow increases gradually. This
will prevent a sudden rush of solids into the drain. Initially, a
small amount of the sludge layer will erode away in the vicinity
of the drain. The clearer water will then flow out and tend to
leave the remainder of the sludge layer intact.
If the drain is plugged, backflush the drain with a hose or
manually back the sludge away from the drain in order to
establish flow. Drain pluggage is an indication that the frequency
of cleaning should be increased.
B. To Clean RotoClone
1. Collected material can be raked up sloping side thru main
access door. Dust and metal chips can be easily removed with
a 12" wide hoe.
2. Mud or sludge pumps are available from several
manufacturers. They can be used to pump the settled
material into a suitable container. Sometimes a “wet-vac”
type unit can be utilized.
C. To Maintain RotoClone
During the draining and cleaning of the RotoClone, a routine
inspection and cleaning of water level control box and float
switch, electronic probes if supplied, and RotoClone housing,
should be done.
D. To Fill RotoClone
RotoClone should be filled after removal of collected material.
Follow instructions Item 3.1, Operating Instructions.
4.2 Routine Maintenance
To insure proper operation of the RotoClone, these procedures should
be followed as a minimum. More frequent cleaning may be required for
certain applications.
A. Water Level Control Box:
1. Observe water level in sight tube (electronic probe hose
connection) frequently. Be certain that water level is at the
running level. Verify that no blockage occurs in the connections
of the tubing (or hose) to the RotoClone housing.
2. Clean water control box, sight tubing, and connection hosing
as needed.
3. Wipe down electronic probe or float switch.
B. Water Eliminator:
1. Inspect each week and remove any accumulation. Cleaning
methods will vary with material collected. Hosing is effective for
many materials. Scraping or washing may be necessary.
C. RotoClone Housing:
After one month’s operation, drain RotoClone and check for build-
up on any surface. Check all impeller surfaces and hopper walls
carefully and wash down with water hose, if required. Frequency of
this operation can be extended until proper cycle for a given
application has been determined.
D. Exhauster:
1. Periodically check exhauster for excessive vibration.
a. If vibration of the fan becomes excessive, the exhauster
should be disassembled and thoroughly cleaned.
b. Inspect exhauster wheel by removing the top assembly. After
top has been removed, motor and impeller can be easily
serviced. Any accumulation of material should be removed.
2. Relubricate motor bearings every 12 months (more often if
conditions require).
a. Stop the motor. Lock out the switch.
b. Thoroughly clean off and remove pipe plugs from
bearing housing.
c. Remove hardened grease from drains with stiff wire or rod.
d. Add grease to inlet with hand gun until small amount of new
grease is forced out the drain.
Grease. For best results, grease should be a good grade of
petroleum oil. lt should be of No. 2 consistency and stabilized
against oxidation. Operating temperature range should be from
—15˚F to +250˚F for Class B insulation, and to +300˚F for Class
“F” and “H”. Most leading oil companies have special bearing
greases that are satisfactory.
E. Replacement Parts:
Parts of the RotoClone will not require frequent replacement and
spare part stock is seldom necessary.
When ordering any parts, give RotoClone size, type and
serial number.
5.0 Troubleshooting
5.1 Correction of Poor RotoClone Operation
Most difficulties that may be encountered in RotoClone operation will
be discovered and corrected by one or more of the following:
Operating Instructions continued