HAZARDOUS LOCATION
PNEUMATIC VACUUMS
ATEX Certified For Hazardous Locations
INCLUDES MODELS: N301BCATEX, N301BCXATEX, N301DCATEX, N551BCATEX, N551BCXATEX, N551DCATEX, N552BCATEX, N552BCXATEX
OPERATING MANUAL
UNITS COVERED BY THIS MANUAL
30 GALLON CAPACITY 55 GALLON CAPACITY
N301BCATEX N551BCATEX
N301BCXATEX N551BCXATEX
N301DCATEX N551DCATEX
N552BCATEX
N552BCXATEX
ATEX CERTIFICATION
Currently no US standards exist to certify non-electrically powered
equipment, such as pneumatic vacuums, for safe use in hazardous locations. However, Europe has such standards and they are
known as ATEX Directives. NORTECH engaged SIRA Test &
Certification, Ltd, a United Kingtom-based, nationally recognized
testing laboratory, to certify that the above NORTECH Hazardous
Location Pneumatic Vacuums meet the applicable ATEX Directives.
PARTS INCLUDED WITH UNIT
After a comprehensive evaluation, SIRA Test & Certification certified
the above models have the following rating:
II2 GD c IIC T6
This ATEX rating is equivalent to the following National Fire Protection Association (NFPA) 70: National Electric Code (NEC) rating:
Class I Division 1* Groups A, B, C, D T6
Class II Division 1 Groups E, F, G T6
Class III
*
Zone 1 only
OPTIONAL EQUIPMENT
2 7
SAFETY FEATURES
COMPRESSED AIR SUPPLY
NORTECH Hazardous Location Pneumatic Vacuums are designed
to eliminate and dissipate the buildup of static charges. The following 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 (electrically 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.
Adequate compressed air supply is essential to the proper performance 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 supply 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 compressed 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.
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 electrically grounded.
See GROUNDING THE VACUUM on Page 4 for more information on
proper grounding procedures.
GROUNDING THE VACUUM SET-UP AND OPERATION
In order to operate safely in approved hazardous locations, the
vacuum must be properly grounded during operation. Proper
grounding can be achieved in one of three ways:
Option Three is to operate the vacuum on an electrically grounded
surface. This option provides conductivity from the vacuum directly
to an electrically grounded surface (i.e. steel plate, concrete
ground level floor, etc.). The container of the vacuum can rest on
the grounded surface directly, or on the dolly. Both the container
Option One is through use of the static conductive air supply
hose. This option utilizes a static conductive air supply hose to connect the vacuum to a compressed air distribution system that is in
turn grounded. Only use this method if the compressed air distribution system has been verified to be electrically grounded.
and the dolly, including wheels, are constructed from conductive
material (steel). Only use this method if the surface is electrically
grounded, and only when a continuous electrical connection between the vacuum and the surface can be maintained.
NOTE: Employing multiple, redundant grounding
options is always good operating practice.
Option Two is through use of the grounding lug. This option
utilizes a direct electrical connection from the grounding lug on the
vacuum cover to a verified electrical ground (i.e. electrical cabinet,
ground rod, water pipe, etc.). The connection from the grounding
lug to electrical ground can be achieved via wire, cable, or a
ground strap with clamps.
FOR ALL GROUNDING OPTIONS, IT IS RESPONSIBILITY OF THE END-USER TO ENSURE PROPER CONNECTION TO, AND THE ELECTRICAL INTEGRITY OF, THE
GROUND.
4 5
Prior to operating the vacuum, inspect the unit and replace worn
or broken components. Use only original NORTECH equipment as
replacement parts.
Inspect the bottom side of the vacuum head cover to ensure the
filter and/or liquid shut-off valve is securely in place by use of the 3
supplied springs. The springs secure the filter in place, and electrically connect the filter to the vacuum.
Make sure the ball valve on the vacuum is turned off.
Place the vacuum head on the drum and clamp the lid to the container. Ensure the cover clamps are locked in place.
Connect the vacuum hose and desired accessories to the vacuum.
Make sure the vacuum has been grounded via one or more of the
options described in GROUNDING THE VACUUM on Page 4.
Connect the air supply hose to the vacuum using Chicago style
connectors and install the safety clips.
Turn on the compressed air supply and open the ball valve on the
vacuum to operate the unit.
NOTE: Take time to understand the specific nature of
the material to be vacuumed and take all necessary
precautions specific to that material. For example,
allow proper charge relaxation time prior to removing the vacuum lid.
MAINTENANCE
Check the internal filter periodically. Ensuring maximum performance 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:
Unclip the three springs that secure the filter to the vacuum cover.
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, regular 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 neglected over time.
Clean or replace the exhaust silencer by following the steps below:
Lift filter out from base.
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.
To clean, shake out filter, or blow off with a safety airgun.
6 3
Replace the cover gasket should it become worn, frayed, or
ineffective.
Replacement filters, foam inserts, and cover gaskets are available
directly from NORTECH.
WET VACUUM OPTION
To convert from a dry vac to a wet vac, remove filter and replace
with the liquid shut-off assembly as shown above.
TWO YEAR LIMITED WARRANTY
NORTECH Vacuum Products Division of Guardair Corporation
(“NORTECH”) warrants its NORTECH HAZARDOUS LOCATION
PNEUMATIC VACUUM to be free from defects in materials and
workmanship for a period of two years from purchase date, except
as provided below. NORTECH will, at its option, repair or replace
with comparable product, any product, part, or component, which
fails under normal use as a result of such defect.
This Warranty does not apply to damage caused by the carrier;
normal wear and tear; deterioration due to solvents, corrosives,
environmental conditions or harsh vacuumed material; soiling,
saturation, or perforation of filters or exhaust silencers; consumable
components; modifications to the product; attachments to the product not carried by NORTECH; or any product not installed, used, or
maintained in accordance with the foregoing and other published
NORTECH instructions and warnings. Consumables including attachments, vacuum hose, filters, exhaust silencers, and gaskets are
warranted for a period of 90 days against defects in materials and
workmanship, are subject to the same exclusions noted above.
This Warranty covers the original purchase of a new NORTECH
HAZARDOUS LOCATION PNEUMATIC VACUUM for normal
industrial or commercial use, and only when installed and used as
specified and in accordance with published operating instructions,
and within all applicable regulatory rules, limits, and guidelines.
THIS WARRANTY IS THE ONLY WARRANTY MADE BY NORTECH FOR THIS
PRODUCT, AND ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
no event shall NORTECH be responsible for special, consequential
or incidental damages arising out of a claim for defective product
or failure of this Warranty. All labor and material costs of repair or
replacement under this Warranty shall be the responsibility of
NORTECH. Shipping costs to and from the purchaser associated
with repair or replacement under this Warranty shall be the responsibility of the purchaser.
To obtain service under this Warranty, within 30 days of the discovery of the defect, the purchaser must contact the dealer or distributor from whom the product was purchased, or contact NORTECH
at the address shown below. The purchaser must provide a reasonable opportunity for inspection and investigation of the claim,
prior to any repairs or alteration to the product. Until the claim is
resolved, purchaser must discontinue use of the product if continued
use creates or exacerbates problems associated with, or incidental
to, the defect.
Proof of purchase must be presented by the purchaser and applicability of the Warranty will be determined by NORTECH.
NORTECH will determine whether to provide repair service, provide replacement parts, or replace the product. Written approval
from NORTECH must be obtained before any repair service is performed. Any repairs performed by parties other than NORTECH or
its authorized dealers or distributors will void this Warranty. Before
returning any product for repair or replacement to NORTECH, a
Return Authorization from NORTECH must first be obtained.
This Warranty applies only to purchases within, and products used
within, the United States and Canada.
NORTECH’s sole obligation and the purchaser’s exclusive remedy
under this Warranty shall be limited to the repair or replacement,
at the sole discretion of NORTECH, of product or components. In
54 Second Avenue
Chicopee, MA 01020
Phone (413) 594-4400
Toll Free (800) 482-7324
Fax (413) 594-4884
www.guardaircorp.com l info@guardaircorp.com
N600A01ATX
QUESTIONS? Contact NORTECH with any questions concerning
application, operation, and performance of your NORTECH
vacuum, regardless of the original purchase date.
A DIVISION OF
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