Downflo Oval, DFO 2-8 to 4-128
18
Operational Checklist
1. Monitor the physical condition of the collector and
repair or replace any damaged components.
Routine inspections will minimize downtime and
maintain optimum system performance. This
is particularly important on continuous-duty
applications.
2. Periodically check the compressed air components
and replace compressed air filters.
Drain moisture following the manufacturer’s
instructions. With the compressed air supply ON,
check the cleaning valves, solenoid valves, and
tubing for leaks. Replace as necessary.
3. Monitor pressure drop across filters.
Abnormal changes in pressure drop may indicate a
change in operating conditions and possibly a fault
to be corrected. For example, prolonged lack of
compressed air will cause an excess build-up of dust
on the filters resulting in increased pressure drop.
Cleaning off-line with no airflow usually restores the
filters to normal pressure drop.
4. Monitor exhaust.
5. Monitor dust disposal.
Use proper safety and protective
equipment when removing
contaminants and filters.
Dirty filters may be heavier than they appear.
Use care when removing filters to avoid
personal injury and/or property damage.
Turn power off and lock out all power before
performing service or maintenance work.
Turn compressed air supply OFF, bleed and
lock out lines before performing service or
maintenance work.
Do not operate with missing or damaged filters.
Filter Removal and Installation
Instruct all personnel on safe use and maintenance
procedures.
Use proper equipment and adopt
all safety precautions needed for
servicing equipment.
Use appropriate access equipment and
procedures. Note the standard collector is not
equipped with access platforms unless noted
on the specification drawings.
Electrical service or maintenance work must
be performed by a qualified electrician and
comply with all applicable national and local
codes.
Turn power off and lock out all power before
performing service or maintenance work.
Do not install in classified hazardous
atmospheres without an enclosure rated for
the application.
Turn compressed air supply OFF, bleed and
lock out lines before performing service or
maintenance work.
Do not set compressed-air
pressure above 100-psig as
component damage can occur.
All compressed air components must be sized
to meet the system requirements of 90-100 psig
supply pressure.
The compressed-air supply must be oil
and moisture free. Contamination in the
compressed air used to clean filters will result
in poor cleaning, cleaning valve failure, or poor
collector performance.
Purge compressed air lines to remove
debris before connecting to the collector’s
compressed air manifold.
Maintenance Information
