Razorback MaxxGuard 550UV Air Scrubber — 550 CFM, 50Hz/230V/AU

The MaxxGuard 550UV is a three-stage portable air scrubber for water damage restoration, mould remediation and dust control. It draws contaminated air through a pre-filter and a combined HEPA/activated carbon filter, and carries a supplementary UV-C lamp downstream of the filtration.

It is the machine you run alongside air movers and dehumidifiers to capture the particulate they stir up — particularly on category 3 water damage and mould remediation, where uncontrolled airborne spread is the main risk to the rest of the structure. Both inlet and outlet can be ducted, so the same unit works as a recirculating scrubber or as a negative air machine within containment.

One unit at maximum speed will generate more than seven air changes per hour in a 100 m³ room.

The measurable performance of this machine is its filtration. That is what the pre-filter and HEPA/activated carbon stage are there to do, and that is what the machine should be specified on. Treat the UV-C lamp as a supplementary stage with no quantified performance figure attached to it.

If your scope of works requires verified pathogen reduction, that is achieved through containment, negative pressure, HEPA filtration and surface remediation using an ARTG-listed disinfectant. We stock listed products for that part of the job and can point you at the right one.

Key features

550 CFM rating (934 CMH), variable across a 330–750 CFM range
Three-stage filtration: pre-filter plus combined HEPA/activated carbon filter
Supplementary 254 nm UV-C lamp, ozone-free quartz
Hour meter to track unit running time across jobs
Filter change indicator light
Both inlet and outlet ductable for negative air or containment work
Stackable rotomoulded housing, 18 kg
6 m power cord

Typical applications

Water damage restoration, including category 3
Mould remediation
Containment and negative air
Dust control during demolition and strip-out
Odour work as part of a wider treatment
General air filtration in occupied and unoccupied spaces

UV-C lamp specification

Wavelength	254 nm, single band
Envelope	Ozone-free quartz, hydroxyl content 10 ppm or less
Arc power	7.8 W (±15%)
Time to stable output	5 minutes from ignition
Rated average life	Greater than 8,000 hours
Lamp operating range	0–50 °C, 20–85% RH non-condensing
Base	T5 G5 bipin, ceramic
Overall length	175 mm
Contains	Liquid mercury — see disposal note below

Ozone-free matters. Low-pressure mercury lamps can emit at 185 nm as well as 254 nm, and 185 nm generates ozone. This lamp uses a quartz envelope that transmits 253.7 nm while suppressing the ozone-generating line, and the lamp manufacturer states the glass is ozone-free. That is what allows the unit to run in a semi-occupied space. It is not an ozone generator and should never be substituted for one, or the reverse.

Five minutes to stable output is worth knowing if you run the machine in short bursts. The lamp does not reach its rated output the moment it strikes.

Operating advice

Set fan speed to the containment, not to the maximum. A scrubber that overwhelms your containment barrier is working against you.
Run the pre-filter as the sacrificial stage and change it often. It is far cheaper than the HEPA/carbon cartridge and it is what protects it.
On category 3 and mould work, duct the outlet outside the containment and run the unit as a negative air machine rather than recirculating.
Use the hour meter. It is the only record you have of filter and lamp service life, and it is the number that tells you when consumables are due.
Ambient above 50 °C is outside the lamp's stated operating range. Roof spaces and unventilated structures in an Australian summer can exceed that.

Maintenance and consumables

Filters

Change the pre-filter frequently — it is the cheapest consumable on the machine and it determines how long the HEPA/carbon cartridge lasts. Replace the HEPA/activated carbon filter when the filter change indicator illuminates, or sooner if airflow has visibly dropped.

UV-C lamp

Clean the lamp and its sleeve every three to six months. A dust film on the quartz attenuates output and there is no indication on the machine when that has happened.

Replace the lamp annually. Two things sit behind that interval: the lamp carries a twelve-month component warranty, and UV output falls progressively over life with no visible symptom. A UV-C lamp that has lost most of its output still lights normally. "It is still glowing" is not a serviceability test — without a UV radiometer there is no way to check output in the field, which is why the interval is a calendar rule rather than a condition-based one.

Safety — read before servicing

UV-C exposure. 254 nm radiation causes photokeratitis (welder's flash) and skin erythema. Never look directly at an energised lamp and never operate the machine with the housing open. Isolate power at the outlet before opening the unit for any reason.
The lamp contains liquid mercury. Handle it as you would any mercury-containing tube. If one breaks, ventilate the area, do not vacuum the debris — including with this machine — and collect fragments with stiff card and adhesive tape into a sealed container.
Disposal. Do not put spent lamps in general waste. Mercury-containing lamps are handled under state and territory waste regulations, which vary by jurisdiction. Only two facilities in Australia process them, so lamps need to go to a collector who delivers to one of those. The FluoroCycle scheme, run by Lighting Council Australia, publishes a directory of recyclers — note that it is a voluntary scheme rather than a mandatory national one.

Specifications

Power	220V/240V, 50Hz
Current	3 A
Airflow rating	550 CFM (934 CMH)
Airflow range	330–750 CFM
Static pressure	2.8 in. H₂O
Sound pressure level	Less than 69 dBA
Filtration	Pre-filter, activated carbon/HEPA filter
UV-C lamp	254 nm single band, ozone-free quartz, 7.8 W
Duct size — intake	40 cm
Duct size — outlet	20 cm
Power cord	6 m (20 ft)
Weight	18 kg
Dimensions (L×W×H)	62.5 × 55 × 35 cm

Frequently asked questions

Does this unit produce ozone?

No. The lamp uses ozone-free quartz and emits at 254 nm as a single band. The ozone-generating 185 nm line is suppressed by the envelope. Do not confuse this machine with an ozone generator — they do different jobs, and an ozone generator cannot be run in an occupied space.

How often does the UV-C lamp need replacing?

Annually. The lamp carries a twelve-month component warranty and its output declines over life with no visible indication. Clean the lamp and sleeve every three to six months in between.

Can I run the machine if the UV-C lamp has failed?

The filtration stages are independent of the lamp and are what the machine's performance rests on. That said, replace a failed lamp rather than leaving it — and never operate the unit with the housing open to inspect it.

Can I use this as a negative air machine?

Yes. Both inlet and outlet accept ducting, so the unit can be run as a negative air machine within containment or as a recirculating scrubber. On category 3 water damage and mould remediation, ducting the outlet outside the containment is the correct configuration.

Replacement filters and consumables

Pre-filter G3, MG550 & MG550UV (5 pack)
HEPA/activated carbon filter, MG550 & MG550UV (each)
Layflat Duct 300 mm x 362 mtr

Documents

User Manual

Electrical safety

SAA approval mark

Razorback restoration equipment is supplied against the electrical safety requirements of the applicable Australian and New Zealand Standards. This relates to electrical safety only and is unrelated to any claim about air treatment performance.

Warranty

Razorback cleaning and restoration equipment is covered against manufacturing defect across all components, large and small — every part, assembly and component is covered against defect or failure.

Click here for warranty details

Not sure whether this machine suits your scope of works, or whether you need a scrubber, a negative air machine or both? Call us before you order. We would rather help you specify it correctly than process a return.

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