https://harrissupplyind.com - To Order Parts Call 608-268-8080
Four general rules to follow:
1. Keep your vacuum clean. Never use it without filters, and make sure that all filters are
properly fitted. See the sections below on filters and bags.
2. Provide a proper storage area for the machine and attachments. Remove the hose and
attachments from the machine when not in use.
3. Always be certain that the top vacuum unit is nested properly on the tank, and that the tank
latches are secure.
4. Whenever you are working around toxic or hazardous substances, always wear suitable
protective clothing and carefully follow safety procedures as outlined by your safety
coordinator. This is particularly important when opening the unit to change bags or filters.
Installing filter and bags – 90505 Plastic Disposal Bag, 90567 Paper
Collection Bag & 98588 Primary Paper Filter Protector
Installation:
1. Open the tank latches and remove the vacuum unit from the tank.
2. Open the 3-mil plastic disposal bag and set it open in the bottom of the tank. Do not allow
the rim of this bag to rest any higher than the tank’s metal intake.
3. Cradle the paper collection bag in the tank. Open the yellow flap, take hold of the cardboard
backing on the bag and fit it over the metal intake. Make certain the integral hole gasket is
sealed all around the intake tube.
4. Stretch the collection bag out in the tank.
5. Place the primary paper filter protector into the tank and over the tank’s rim. This protects the
Dacron impact and HEPA filters. Make sure that the protector’s elastic band is fully over the
tank’s rim.
6. Replace the vacuum unit on the tank, making sure it is seated properly, and secure the
latches.
Removal:
1. Unplug the unit’s power cord.
2. Open the tank latches and remove the vacuum unit from the tank.
3. Remove the primary paper filter protector from the tank’s rim. Unseat the paper collection
bag’s cardboard-backed hole from the metal intake. Use the bag’s yellow flap to seal the
bag’s intake hole.
4. Reach under the collection bag and raise the opening of the plastic disposal bag to fully
surround both the collection bag and the primary paper filter protector.
5. Seal the plastic disposal bag carefully and dispose of it properly.
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Changing the HEPA Filter
https://harrissupplyind.com - To Order Parts Call 608-268-8080
1. The HEPA filter should be checked periodically and replaced when necessary.
2. To remove the HEPA filter, first remove the primary paper filter protector and Dacron filter.
Then remove the four screws under the HEPA filter.
3. Install a new HEPA filter with its open end toward the motor.
4. Replace the four screws, tighten, and replace the Dacron filter and primary paper filter
protector.
Using the Filter Gauge
A manometer filter gauge beside the motor indicates when a filter requires inspection. This
ensures filter integrity while the CVF 125 is in operation, and ensures that the unit is functioning
at optimal efficiency.
When the gauge’s center indicator turns red while the motor is on, first change the plastic
disposal bag, paper collection bag & primary paper filter protector as previously described. If the
indicator remains red or quickly returns to red after changing these filters, change the Dacron
filter protector and HEPA filter element.
Note that a poorly-seated vacuum unit can also cause vacuum loss and trip the indicator, so
always ensure that the vacuum unit is seated properly on the tank.
Maintenance of motor unit
Damage to an armature is often caused by permitting the carbon brushes to become worn to
less than 1/2-inch in length. To prevent this occurrence, inspect the brushes after 500 hours of
operation and frequently thereafter, replacing them when necessary. It is best practice to
replace brushes when they are worn to half their original length. The original length is
approximately 1-1/4”. Failure to properly replace worn brushes will nullify our warranty.
To inspect the brushes, detach the vacuum housing from the tank. Remove the nuts holding the
motor cover. Carefully remove the plastic motor cap by prying the holding clips. Remove the
metal bracket holding each brush, then remove the brush.
No other maintenance of the motor should be attempted during the first year after purchase.
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