Operating and Maintenance Manual
Air Filters
Content
- Health and Safety
- Cautionary Notes
- Delivery
- Off Loading Handling & Erection
- Installation
- Commissioning and Testing
- Maintenance
of equipment
held in storage conditions
for a period of up to 2 years - Fan section
- Fan Maintenance
- Electric Motors
- Drive Belts
- Belt Tensioning Instructions
- Electric Air Heater Batteries
- Heating and Cooling Coils
- Recuperators
- Dampers
- Air Filters
- Maintenance Schedule
- Invalidation of Guarantee
COSHH Regulations
The components of filters are inherently safe, but changing air filters
could expose operators to a 'Nuisance Dust' hazard. We would therefore
recommend that filter changing be carried out by maintenance personnel
wearing simple dust masks, eye protection, overalls or protective clothing
& gloves. Dirty filters should be sealed into plastic bags for disposal.
Disposable Filters
These are supplied in the forms of panel & bag filters and are fitted
into steel channel runners. Filters are simply withdrawn through the
access door by sliding the filter along the channel runner. Filters
should generally be replaced when the pressure drop increases to 0.5"wg
(125pa) above the initial level.
Washable Panel Filters
Generally as per disposable filters except when pressure drop indicates
dirty filter conditions, filters should be fully immersed in warm water
to winch a mild detergent has been added. Agitate the filter until clean,
rinse and allow to dry before replacing.
HEPA Filters (High Efficiency Particle Arrestors)
This type of filter is generally fitted in front withdrawal frame. Filters
will be held into the frame by retaining bars which can be removed to
allow access to replace filters.
Carbon Filters
Carbon filters normally have an active life of about twelve (12) months,
or more. It is advisable to remove a sample from the pack to return
to manufacturer to determine the remaining working life, preferably
after the first six (6) months & subsequent six (6) monthly intervals.
NOTE! WHEN REPLACING ALL FILTERS ENSURE FILTER IS FACING CORRECT DIRECTION AS INDICATED BY AN AIRFLOW ARROW.