1. Please Observe the Following (continued)
2
1.4 Items supplied
Air Filtration System
Prefilter
Carbon Filter - 20 lbs., with 1 carbon tray mat
Afterfilter
Operating Manual
1.5 Features
• Unit on/off foot switch
• Explosion-proof motor
• Thermal overload protection
• Filter status indicator (differential gauge)
• High airflow rates
• Runs very quietly
• Large filter size extends filter lifespan
• Multi-stage filtration
• Connects to 4" and 2.5" dia. hoses
• Compact size, Unit fits under workbench
• UL, CSA Certified
1.6 Usage
This model is ideal for providing fume extraction at the workplace. It operates very quietly and is
recommended for the connection of 1 to 4 exhaust arms or two exhaust cabinets. For low
operating costs the Unit features a large filter of 14" x 18", which reduces the frequency of filter
replacements. A differential pressure gauge indicates the filter status.
2. Description
2.1 Operating Elements and Construction
Main Switch (Foot Switch)
A foot switch is used to turn the filter unit on and off. This switch needs to be located as far away
from the filter unit as possible.
Filter Monitor
• Differential Pressure Gauge (Filter Monitor)
The differential pressure gauge monitors the filter condition by measuring the pressure
difference (pressure drop) between upstream and downstream of the particulate filters. As filter
saturation increases, the pressure drop increases and the airflow decreases.
When the pressure drop reaches a predefined level, filter maintenance should be performed.
This is generally the point where airflow is inadequate.
• Gas Phase Monitor
There is no filter monitoring system for the gas phase filter installed in this model. The
monitoring of the exhaust air according to Indoor Air Quality Standards remains the responsibility
of the operator. Please refer to Gas Phase Filter Monitoring.
