UAS CLARCOR Smog-Hog SHN-10, Руководство пользователя

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revised 09/15
SMoG-HoG
®
SHn Series Models
9
detergent to work on the next layer. A reduction in
cleaning time duration usually results.
Cleaning Cycle Duration. in most cleaning methods,
adequate time should be allowed for the detergent to
dissolve the contaminant thoroughly. reaction time will
vary depending on detergent strength, temperature and
agitation. Guidelines for mixing, heating and expected
results are included on detergent specification sheets.
Rinse Procedure. cleaned components should
be rinsed off quickly and thoroughly to remove any
remaining contaminants. even if the components
appear to be clean, some detergent residue may
remain. this should be removed because the residue
may contribute to voltage bleed-down when the
components are placed in service. also, even though
the detergent is “buffered” (i.e., treated to prevent
deterioration of the aluminum), prolonged contact with
the components could cause minor corrosion. as with
cleaning, hot water should be used for rinsing.
Dry-Out Time. collection components should be dry
before the system is placed into operation. Start-up
of a wet system causes dead shorts and/or arcing
conditions. Wet ionizers, collector cells and mesh filters
should be placed in a warm room until they are dry.
Techniques such as hand wiping insulators and blowing
dry with compressed air will shorten drying time.
B. Component Cleaning Methods
the manual cleaning method selected will depend
on the type of contaminant, rate of deposit, facility
limitations such as cleaning time windows (process
down time) and available utilities. the following three
acceptable cleaning methods may be included in such
a plan.
Hot Detergent Soak Tank. this method involves
placing components in an agitated solution of hot water
and detergent, and is the most effective method. this
procedure will remove most contaminants collected in
the SHn unit with proper detergent selection.
components should not be placed in highly
concentrated detergent solutions or allowed to soak
for extended periods (e.g., overnight), especially at
elevated temperatures. Extended soaking (e.g., days) in
solvent or detergent solution will degrade components
over time and should be avoided.
Automatic Parts Washers. certain commercially-
available units combine and automate the features
necessary for effective cleaning, including water
heating, detergent injection, agitation, rinsing and
drying.
Portable Pressure Washer. a self-contained pressure
washer with a spray wand can be an effective cleaning
method, providing it is used with caution. care should
be taken not to expose collection cell plates to close-
up and prolonged blasts of high temperature or high
pressure water. cell plates deform under continuous
exposure to such conditions.
C. Other Cleaning Considerations
the previous methods address the cleaning of
Smog-Hog components only. the cabinetry should
also be periodically cleaned (e.g., during normal
planned maintenance downtimes). each time manual
maintenance is performed, the cabinet high voltage
feed-thru insulators should be thoroughly cleaned.
Voltage output of the power packs should also be
checked when maintenance is performed.
uaS and/or our local representatives can provide
assistance in choosing the best method for cleaning
Smog-Hog components in your application.
D. When are Components Clean?
collection components should have a clean, not
necessarily “new,” aluminum appearance after cleaning.
Discoloration will not affect system efficiency. the
following is a checklist for acceptable components:
• Ionizer
1. aluminum frame and plates are free of contaminant
buildup.
2. ceramic standoff insulators are clean and white (no
residual coating). cracked or carbon-tracked insulators
(black streaking) have been replaced.
3. Wire and springs intact and taut, centered between
plates and free of contaminant build-up.
4. contact springs and contact screws are properly aligned
(contact springs not deformed).
5. Bent or broken parts have been repaired or replaced.
• Collecting Cell
1. Aluminum frame is square, plates are parallel and hot
plates are centered between ground plates.
2. residual particulate has been removed between plates
and at corner supports. Material bridging across plates
has been removed.
3. triangular insulators front and rear side are free of
contaminant. cells with carbon-tracked insulators (black
streaking) have been replaced.
4. contact springs and contact screws are properly aligned
(contact springs not deformed).
5. Bent or broken parts have been repaired or replaced.
• Prefilters/Afterfilters
1. aluminum media and frame are free of contaminant.
2. Frame is square and media is intact.
3. filters are always installed with drain holes down and
arrow on their frames in the direction of airflow.
• Cabinet
1. ceramic feed-thru insulators are clean and white.
2. Door gaskets (where applicable) are clean and intact.
3. component tracks are free of contaminant
(for component grounding).
4. Module sumps and bottom drains are clean and free-
flowing.
5. Walls, ceiling and doors are free of heavy buildup.