11
Donaldson Company, Inc.
Prefilter Removal
1. Remove the nylon mesh prefilter.
2. Reinstall the prefilter placing the top edge against
the upper end cap of the filter cartridge. Stretch the
screen for a tight fit and secure using a hook-and-
loop fastener.
Note: The prefilter must cover all holes in the
perforated liner. Stretch to fit.
Filter Removal
1. Disconnect electrical power.
2. Open the bottom access door.
3. Loosen four filter support knobs.
4. Turn the retaining ring counterclockwise to release
the ring and filter.
5. Remove the retaining ring and filter and dispose of
filter properly.
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.
Maintenance Information
Operational Checklist
1. Monitor the physical condition of the valve and auger
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. Monitor pressure drop across filters.
Abnormal changes in pressure drop may indicate a
change in operating conditions and possibly a fault
to be corrected.
3. Monitor exhaust.
4. 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.
Do not operate with missing or damaged filters.
Filter Removal and Installation
