Charnwood HEPA C400RA 4hp 240v Cyclone Extractor with Remote Start & Auto Filter Cleaning

• Maintains effective dust extraction for longer between filter interventions
• Makes workshop extraction easier to manage when several machines or operators share the system
• Reduces the time and mess involved in emptying the collection drum
• Gives greater flexibility when arranging extraction around a busy workshop
• Provides high-grade filtration for a cleaner 8 hour working environment

Consistent extraction for demanding workshops

The C400RA is designed for experienced woodworkers who need reliable extraction throughout a working day, rather than a system that gradually loses performance as the filter loads. Its cyclone arrangement separates most dust, chips and shavings before they reach the filter, helping to keep airflow consistent and the filter cleaner for longer. The Pro Series extractor can operate continuously for up to 8 hours and is rated for trade use.

A quiet 4hp induction motor drives the 402mm (16") steel fan, producing an airflow of 2850m³/hour without a hose. The 3000W motor requires a 240V, 50Hz 16A supply, with a 16A Type C breaker recommended.

Cyclone separation protects airflow

The cyclone process keeps collected material away from the fan itself, so chips and shavings do not interfere with fan rotation. Most of the material falls directly into the 138-litre collection drum rather than entering the filter chamber, helping the filter maintain maximum airflow for longer.

Air passes back through the fan housing before reaching the H13 HEPA-grade cartridge filter. The filter removes 99.95% of particles measuring 0.3 micron or larger and has a surface area of 3.09m².

Automatic filter cleaning

The motorised filter-cleaning system reduces the need for manual maintenance and helps prevent the cartridge from becoming clogged. Three paddle arms agitate the filter pleats to dislodge accumulated dust, with the automatic cleaning cycle running every 15 minutes during prolonged use and each time the cyclone is powered down.

Each cleaning cycle comprises 10 clockwise and 10 anti-clockwise rotations. A pressure gauge allows the operator to monitor extraction performance, while the filter collection bag catches the small amount of dust that reaches the filter and can be removed using its quick-action strap.

Straightforward collection drum emptying

The 138-litre collection drum is designed to make emptying a routine rather than a chore. A sight window provides a direct view of the fill level, while a laser sensor automatically detects when the drum is full and activates a flashing light and audible alarm. The alarm continues after shutdown, helping ensure the warning is noticed even when the operator is wearing hearing protection.

Two toggle handles lift the drum lid and the drum itself sits on castors, allowing it to roll forward for access to the collection bag. A twin-hose negative-pressure system holds the empty bag in position and prevents it being drawn into the extractor, eliminating the need for a separate drum insert.

Flexible connection options

The C400RA has a 200mm diameter inlet and is supplied with a splitter that allows this to be configured as three 100mm diameter inlets. Three hoses can therefore be connected simultaneously for collection from multiple machines, or the supplied blanking caps can be used to close unused inlets.

Hose is not supplied as standard, although it is recommendsed you use 100mm transparent hose, Wood Workers Workshop offer 1.5m and 3m lengths.

Remote control and timed operation

The remote handset lets the operator start and stop the extractor without returning to the control panel. It can be wall-mounted in a convenient position or kept to hand, making it particularly useful where several machines or operators share the extraction system.

A countdown timer can be set from either the control panel or remote handset, allowing the extractor to run for a predetermined period before switching off. The control panel also incorporates an emergency stop switch.

Ready to position in the workshop

The C400RA is supplied fully assembled, so installation is limited to unpacking and getting the machine ready for use, with an assembly time of approximately 30 minutes. Lockable castors and side handles make it possible to reposition the 126kg machine around the workshop when required.

The assembled footprint is 1340mm wide by 900mm deep, with an overall height of 1850mm. The filter housing is enclosed to reduce sound emissions, with a specified noise level of 78dB(A) at 3 metres.