Minuteman X839 Asbestos Series Wet_Dry Vacuum - Manual (Page 8)

Parts and Instruction Manual
Page 5
CHANGING THE PREFILTER SLEEVE
The prefilter sleeve should be changed, using all of the precautions previously mentioned. The
prefilter sleeve should be changed when any of the following takes place:
1. Anytime there is an indication of a filter tear during normal operation of the unit. This tear
could be in any of the filters used.
a. paper dust containment bag
b. cloth filter bag
c. paper bag protector
These tears would show up during the tank clean-out procedure, or....
2. Every other tank clean-out period.
To change the prefilter sleeve, do the following:
a. Wipe down all of the exposed surfaces on the underside of the removed lid, using
the dampened wiping cloth.
b. Remove the prefilter sleeve from the high efficiency filter. Be careful to not damage
or puncture the media used in the final filter. Do not attempt to clean the prefilter
sleeve in any way; dispose of by placing it into the tank you are now in the process
of cleaning. DO NOT USE ANY TOOLS TO REMOVE THE PREFILTER SLEEVE.
c. Before proceeding any further in cleaning the tank, first place a new prefilter sleeve
onto the HEPA / ULPA filter.