Operation and Maintenance Manual:
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
3
Routine Maintenance
Daily
Inspect the unit:
• power cord is not broken, frayed or worn, and the plug is fully
engaged at the wall outlet
• casters are locked
• red filter or obstruction indicator is not illuminated
• unit operates without excessive vibration or unusual noises
• flexible exhaust ducting is not kinked or damaged, and securely
attached at both ends
Cleaning
Routinely clean any dust and contaminants from the exterior of the unit
and power cord with a mild cleaner. Do not use excessive liquid.
Decontaminate as necessary with a facility- and EPA-approved
disinfectant.
Filter Replacement
NOTE: Before replacing filters, check to make sure there is nothing
impeding the airflow into the unit. Check under the unit for paper,
rubbish, etc., that may be trapped on the intake side. The pre-filter
should generally be replaced every 60 to 90 days.
Pre-Filter
When the red indicator light on the front panel is illuminated, the most
likely reason is that the pre-filter is clogged and needs to be replaced.
Proceed as follows (Fig. 6):
1. Rock the green the power switch down to the OFF position.
2. Unplug the unit from the wall outlet.
3. Listen to make sure the blower wheel has stopped spinning, and
remove the bottom front door.
4. Slide the pre-filter out of the cabinet.
5. Replace the pre-filter with the same type and size (minimum
MERV 7). Note the air-flow arrows on the filter and make sure they
point up.
6. Replace the bottom front door.
7. Plug in the unit and rock the power switch up to the ON position.
The red indicator light should extinguish within a few seconds. If it does
not, then the HEPA filter needs to be replaced.
HEPA Filter
The HEPA filter, when used in a negative air machine, is rated for
approximately 40,000 hours of operation, or 4 years, under normal
conditions and recommended replacement of the pre-filter (air scrubber
use will reduce filter life). If the red indicator light is illuminated, and
did not extinguish after replacing the pre-filter, then the next step is to
replace the main HEPA filter. Do these steps (Fig. 6):
1. Move the power switch to the OFF position.
2. Unplug the unit from the wall outlet.
3. Listen to make sure the blower wheel has stopped spinning, and
remove the bottom front door.
4. Remove the pre-filter from the unit.
5. Use a 1/2-inch open-end or adjustable wrench to remove the bottom
nuts from the all-thread bars on both sides (four nuts total).
6. Slide the bottom HEPA filter supports down, along with the filter,
and out of the unit.
7. Remove the HEPA filter and immediately put it inside an approved
containment bag. Dispose per facility guidelines for hazardous
materials.
8. Position the new HEPA filter into the unit with the gasket on the
filter facing up, on the discharge side of the filter. Make sure the
HEPA filter is centered and the edges align with the brackets on the
top side and each side for a complete seal.
9. Re-install the bottom supports and attach the bottom nuts.
10. Tighten the nuts equally until the filter is held securely in place, and
ensure the top HEPA filter gasket is significantly compressed
against the mounting structure to assure no bypass air.
11. Inspect the filter for a complete and tight fit. Loosen the nuts and
reposition if necessary.
12. Replace the pre-filter.
13. Replace the bottom front door.
A200224
Fig. 6 – Filters
Troubleshooting
Before you request dealer service, check for these easily solved
problems:
• Check your main electrical panel circuit breakers or fuses if the unit
will not turn on.
• Make sure the unit is plugged in to a working 115V electrical outlet.
• Check for sufficient airflow. Filters should be clean and unobstructed.
If you need to contact your authorized dealer for troubleshooting and/or
repairs, be sure to have the model and serial numbers of your equipment
available.
CAUTION
!
PERSONAL PROTECTION
If applicable, wear appropriate Personal Protective Equipment (gown,
gloves, respirator, etc) when changing filters.
WARNING
!
MOVING PARTS & SHARP EDGES HAZARD
Failure to follow this warning could result in personal injury.
Do not place objects on top of the discharge plenum.
Keep hands and face away.
Rotating blower wheel can cause serious injury.
Wear gloves when handling.
