Maintaining Your Dhd Autoflow; Dhd Autoflow Chamber - NuAire NU-5510 Operation And Maintenance Manual

10.0

Maintaining Your DHD Autoflow

DHD Autoflow Chamber

The chamber maintenance is up to the discretion of the owner and the extent of cleanliness and sterility desired.
The shelves and bracket supports are all removable and autoclavable. The interior should be wiped down with an
appropriate disinfectant such as 70% ISOPROPYL ALCOHOL or equivalent.
DO NOT USE ANY CHLORINATED OR HALOGEN MATERIALS IN THE CHAMBER. SUCH
MATERIAL IS HARMFUL TO THE POLISHED STAINLESS STEEL.
The humidity pan should also be sterilized and the water changed regularly to assure sterility.
A small amount of copper sulfate may be added to the humidity pan to inhibit bacterial growth.
CO Supply Filter P/N X-980385 (50 mm Disk, Uni-directional In-Line, Dry)*
2
The CO Supply Filter should be replaced every fifth empty CO
2
(yellow-brown). Note direction of flow (IN is labeled on one side of filter) when replacing filter.
Chamber HEPA Filter
The chamber HEPA filter should be replaced approximately every two years to assure optimum performance. A
visual check should be performed periodically and during CO
check would include, removing the plenum top and observing the HEPA filter interior and exterior for heavy
discoloration (yellow-brown) or filter change. To replace, remove the knurled nuts holding it to the top of the
chamber.
Air Supply Filter P/N X-980385 (50 mm Disk, Uni-directional In-Line, Dry)*
The Air Supply Filter should be replaced every fifth empty CO
(yellow-brown). Note direction of flow (IN is labeled on one side of filter) when replacing filter.
Air Pump Filters P/N X-980366 (50mm Disk, Uni-Directional In-Line, Wet)*
The Air Pump Filters should be replaced EVERY TWO YEARS to assure optimum performance. A visual check
should be performed during CO
perform visual check.
CO Chamber Sample Port
2
Should be changed when discolored (yellow brown). Filter is plumbed in the chamber sample hose and can be
inspected when the cover is removed to check the air pump filter. This filter has a green dot to distinguish it from
the "dry" filter.
* The word "In" on the outer rink of the body indicates the inlet side of the filter and should be installed
toward the gas supply.
OM0135
P/N A-980899-02 (Radial HEPA Filter for Heated Decon Cycles)
sensor calibration to assure filter integrity. Remove the sensor housing cover to
2
P/N X-980366 (50mm Disk, Uni-Directional In-Line, Wet)*
40
tank or when the filter is visibly discolored
2
sensor calibration to assure filter integrity. A visual
2
tank or when the filter is visibly discolored
2