AS110001 MAINTENANCE
SERVICING:
Before each use inspect for damage, blocked inlet/outlets. When the Air Scrubber is first turned on,
check for excessive vibration. If the unit vibrates excessively or if impeller rubs on housing, turn off
the unit immediately. Have a service technician inspect the unit to locate the problem.
WARNING: Use extreme caution when changing the HEPA filter as hazardous material could be
trapped in the media. Always make sure to dispose of filters in the appropriate way. If you are
unsure of how to safely dispose of any filter-consult an industrial hygienist to ensure that all
hazardous materials are contained and disposed of properly.
AIR FILTERS:
The standard Air Scrubber HEPA System is equipped with two filters that progressively filter out
smaller particles. An optional activated carbon/potassium permanganate filter can be also added.
These filters must be checked regularly. Operating the unit with dirty filters will reduce the airflow,
but will do no harm to the unit. The unit can be run indefinitely with dirty filters.
The two standard filters used are listed below (as installed in the unit from top to bottom):
1. 25 to 30% efficient (per ASHRAE 52.1-1992), MERV-7, pleated fabric pre-filter.
2. 99.97% DOP efficient HEPA filter
FILTER REPLACEMENT
When the amber "filter change light" illuminates. It may be time to replace one or both filters.
To check airflow accurately, an airflow meter or anemometer must be used:
1. When the filter change light illuminates; remove all ducting and run on high speed. if the
filter light remains lit; replace the pre-filter and run on high again. If the light remains; it is
time to replace the HEPA filter for full 500 CFM performance.
2. Airflow on high speed with all filters clean and no ducting is slightly over 500 CFM. The unit
can be run with very dirty filters and virtually no flow without harming the unit. The
operator's decision to change filters should be based on filter cost vs. the unit's filtering
effectiveness.
If airflow is 250 CFM vs. 500 CFM, the unit will filter particles from a space at half the rate. The
operator must judge if that is acceptable. If the operator determines the filters should be changed
due to low airflow, it is most economical to change them in the following order:
1. Change the pre-filter (top) first. This is the least expensive filter. Recheck the airflow. If the
airflow is acceptable, no other filters need to be changed.
2. If the airflow is still too low, the HEPA filter must be changed. To remove the HEPA filter,
follow these steps:
A. Loosen the eight screws one revolution
B. Rotate all eight clips out of the way.
C. Remove old filter.
D. Installing the new filter is the reverse of these instructions
Optional Activated Carbon/Potassium Permanganate Filters:
Optional filters are available. They use a blend of activated carbon and potassium permanganate.
This blend removes most contaminants encountered in most filtering applications. The activated
carbon removes the heavier volatile organics while the potassium permanganate removes lower
molecular weight contaminants. This is well suited to the smoke odours present after fire damage.
AS110001 MAINTENANCE
To Next Page
Loading...