MAINTENANCE
Check the internal filter periodically. Ensuring maximum perfor-
mance means cleaning the filter when it becomes dirty and/
or clogged. To clean the filter, detach the filter from the cover by
following the steps below:
Lift filter out from base.
Unclip the three springs that secure the filter to the vacuum cover.
To clean, shake out filter, or blow off with a safety airgun.
Damaged, ripped, or torn filters should be replaced immediately.
Over time, even filters that have been cleaned regularly loose their
effectiveness as the pores in the filter media fills up. Therefore, regu-
lar filter replacement should be a part of an effective maintenance
plan. Follow the same steps as above to change out the filter.
Periodically check the exhaust silencer. While the exhaust silencer
does not provide a filtering function, dust may collect within the
silencer media especially when filter maintenance has been ne-
glected over time.
Clean or replace the exhaust silencer by following the steps below:
Remove the three screws which attach the exhaust housing to the
venturi box.
Slide the foam insert out of the exhaust housing. Shake out the foam
insert, or replace if frayed or torn.
6
3
NORTECH Hazardous Location Pneumatic Vacuums are designed
to eliminate and dissipate the buildup of static charges. The fol-
lowing safety features ensure the components of the vacuum unit
are electrically connected and that the entire unit can easily be
grounded.
All vacuum parts and accessories are constructed of metal (electri-
cally conductive), or with plastic infused with conductive additives.
Painted parts are coated with electrically conductive paint.
The filter is surrounded with conductive steel mesh. Steel springs
hold the filter to the cover and provide electrical continuity.
Metal-to-metal contact between the cover and the container is
provided through the braided grounding strap.
SAFETY FEATURES
Static conductive vacuum hose eliminates the generation of static
electricity caused by material passing through the vacuum hose.
The grounding lug on the cover provides one means to connect the
vacuum via wire or cable to electrical ground. Static conductive
air supply hose provides another means to ground the vacuum.
The steel drum dolly with steel wheels provides a third means for
grounding the unit if the floor on which the unit rests is in turn electri-
cally grounded.
COMPRESSED AIR SUPPLY
Adequate compressed air supply is essential to the proper perfor-
mance of your NORTECH vacuum. Compressed air requirements
are as follows:
2B-Series Models
.................................................110 cfm
N552BCATEX
N552BCXATEX
B-Series Models
......................................................68 cfm
N301BCATEX
N301BCXATEX
N551BCATEX
N551BCXATEX
D-Series Models
.....................................................47 cfm
N301DCATEX
N551DCATEX
Recommended operating pressure for all NORTECH vacuums is
100 psi, although all models will operate at lower pressures with
a corresponding reduction in performance. Use of 3/4” ID air sup-
ply hose with 3/4” Chicago style connectors is recommended to
ensure adequate air flow is delivered to the vacuum.
NOTE:
Make all compressed air connections with the
compressed air source turned off. Disconnect com-
pressed air connections only after the compressed air
supply has been turned off and the air supply hose
vented by opening the valve on the vacuum. NEVER
disconnect a pressurized compressed air hose.
See
GROUNDING THE VACUUM
on Page 4 for more information on
proper grounding procedures.
