ProTeam lists part 103897 as the filter cassette for the CX440 canister vacuum - reference 61 in the machine parts list, alongside the pre-filter and the combination HEPA and carbon filter that share its filtration path. It is the part a facility tech swaps when a CX440 has lost airflow to a loaded, discolored or torn cassette, and it is the part that protects the motor sitting behind it.
The CX400, CX420 and CX440 are ProTeam commercial canister vacuums - wheeled cylinder machines with a hose, wand and floor tool rather than a backpack harness. They are a legacy line: ProTeam has moved on, several CX consumables are listed as discontinued, and the current authorized ProTeam parts catalog no longer carries a CX model page. That is exactly why replacement parts for them are worth stocking. A CX canister with a sound tank and good filtration is a machine that owes nothing, and a single component swap keeps it earning.
Built for
- Scheduled filtration maintenance on a CX440 running a daily commercial route
- Restoring suction that has faded gradually as the cassette loaded up
- Replacing a cassette with torn media or a cracked frame after physical damage
- Cleaning contractors managing several machines on a common filter-change schedule
- Protecting an expensive motor from dust ingestion and heat
Where the cassette sits in the CX440 filtration path
The CX440 documentation describes a staged filtration path: a pre-filter, then the filter cassette, then a combination HEPA and carbon filter, then the exhaust filter. Each stage exists so the next one is not asked to do work it was not designed for. When the cassette loads, two things happen at once - airflow drops, which the operator experiences as weak suction, and the motor loses the cooling airflow it depends on, which shortens its life. Changing a cassette is a small job. Replacing the motor that died behind a neglected one is not.
Fitment note
103897 is documented for the CX440. Do not assume it fits a CX400 or CX420 - the CX sub-models carry distinct filtration part numbers. We could not confirm from published sources whether the complete cassette includes HEPA media itself or serves as a stage ahead of the separate HEPA and carbon filter, nor does ProTeam publish a replacement interval specific to this part, so we are not stating either. Verify against your machine parts diagram before ordering.
Specifications
- Manufacturer: ProTeam
- Manufacturer part number: 103897
- Parts list reference: item 61, CX440 owner manual
- Type: complete filter cassette
- Platform: ProTeam CX440 commercial canister vacuum
- Related filtration parts: pre-filter 103898, combination HEPA and carbon filter 103896
- Filtration efficiency rating for this stage: not published by the manufacturer
Frequently asked questions
How often should a commercial vacuum filter be changed?
General industry guidance runs to roughly every three months, and more often in heavy dust, construction cleanup or high-traffic work. Machines running several hours daily will always outpace a calendar interval, so judge by airflow as well as by date.
What are the signs a filter cassette needs replacing?
Reduced suction that came on gradually, visible clogging or discoloration of the media, and a motor that sounds strained or runs hotter than usual because it is fighting a restriction.
Does a clogged filter damage the motor?
It shortens motor life. Vacuum motors are cooled by the air passing through them, so a restricted filter makes the motor run hot as well as reducing suction. Filter maintenance is the cheapest motor insurance there is.
Will this cassette fit a CX400 or CX420?
It is documented for the CX440. The CX sub-models carry distinct filtration part numbers, so match the part to your own machine parts diagram.
Is the HEPA filter included in the cassette?
The manufacturer does not publish that detail clearly, and the CX440 parts list shows a separate combination HEPA and carbon filter as part 103896. We are not going to claim the cassette contains HEPA media - contact us if you need the full stack identified.
Discount Cleaning Products is an authorized dealer for the brands we sell, so the parts on this page are genuine manufacturer components rather than look-alike substitutes. Our support is US based, and if you are unsure which part your machine takes, send us the model and serial number and we will work through the parts diagram with you before you order. We would rather spend five minutes getting the fitment right than have you return the wrong part.
