Pure n Natural Systems MARK 20 User Manual

MARK 20 AIR CLEANER USERS MANUAL
READ AND SAVE THESE INSTRUCTIONS
Pure n Natural Systems, Inc. recommends that a licensed electrician or licensed

WARNINGS:

1. Always unplug or disconnect the air cleaner from power supply before servicing.
2. To reduce the risk of electric shock or injury to persons, do not expose to water or
rain, do not use in a window.
3. Do not use this fan with any solid state speed control device.

FILTER CHANGING:

1. Pre Filter
2. Carbon Panel Filter
3. H.E.P.A. Filter
Step 1. The Pre Filter is located behind the intake door (service door). The Pre Filter is a
blue and white polyester, pre-tack filter. The intake door is located closest to the
HI/OFF/LO switch on the face of the system. Remove the pins and grill from the air
intake side of unit. The Pre Filter is the first filter behind the intake door. Peel away dirty
Pre Filter and discard. Install the new Pre filter with the white side out. Close door. DO
NOT WASH PRE FILTERS.
Step 2. The carbon filter is located behind the Pre Filter. Follow Pre Filter changing
instructions from Step 1. Remove Carbon Filter, discard and replace with new Carbon
Filter. DO NOT WASH CARBON FILTERS.
Step. 3. The H.E.P.A. filter is the box filter (with a pleated media surface) located
behind the pre-filter and charcoal filter. Slip the H.E.P.A. Filter out of the system,
discard and replace with new H.E.P.A. Filter. DO NOT WASH H.E.P.A. FILTER.
Filter maintenance may vary according to each situation.
For any questions, please contact our customer service department at 1-800-237-9199.
contractor install units.
- Replace every 3 to 4 weeks.
- Replace at least every 2 months.
- Replace at least every 12 months.