ANSUL Cartridge Dry Chemical Fire Extinguishers
Models 10, 20, 30, Operation, Inspection, Service and
Maintenance, and Recharge Manual (Form No. F-7674)
INTRODUCTION
2018-OCT-15 REV. 10 PAGE 1
INTRODUCTION
The Occupational Safety and Health Administration (OSHA) –
Rules and Regulations state that ‘‘the National Fire Protection
Association (NFPA) provides excellent guidelines in its
standard for portable fire extinguishers. The latest edition of
NFPA 10, Standard for Portable Fire Extinguishers is available
from the National Fire Protection Association, Batterymarch
Park, Quincy, MA 02269.
The Compressed Gas Association, Inc. Standard CGA C-6
‘‘Standard For Visual Inspection of Steel Compressed Gas
Cylinders’’ provides information on determining unacceptable
dents and corrosion. It is available from the Compressed Gas
Association, Inc., 1235 Jefferson Davis Highway, Arlington,
VA 22202.
RESPONSIBILITY
The owner or occupant of a property in which fire
extinguishers are located has an obligation for the care and
use of these extinguishers at all times. By doing so, he/
she is contributing to the protection of life and property.
The nameplates and instruction manual should be read and
thoroughly understood by all persons who may be expected to
use extinguishers.
INSPECTION
Inspection is a ‘‘quick check’’ that an extinguisher is available
and will operate. It is intended to give reasonable assurance
that the extinguisher is fully charged and operable. This is
done by seeing that the extinguisher is in its designated
place, that it has not been actuated or tampered with, and that
there is no obvious physical damage or condition to prevent
operation. The value of an inspection lies in the frequency,
regularity, and thoroughness with which it is conducted.
Extinguishers shall be inspected at regular monthly intervals,
or at more frequent intervals when circumstances require.
MAINTENANCE
Extinguishers shall be maintained at regular intervals, not
more than one year apart, or when specifically indicated by
an inspection. Maintenance is a ‘‘thorough check’’ of the
extinguisher. It is intended to give maximum assurance that
an extinguisher will operate effectively and safely. It includes
a thorough examination and any necessary repair, recharging,
or replacement. It will normally reveal if there is a need for
hydrostatic testing of an extinguisher.
RECHARGE
All extinguishers shall be recharged immediately after
use. They shall also be recharged when dictated by an
inspection or when performing maintenance. Recharge is the
replacement or replenishment of the suppressing agent. It
also includes the replenishment of the expellant for certain
types of extinguishers. When performing the recharge, use
only those materials specified on the nameplate.
The use
of other recharging materials may impair the efficiency,
cause malfunction, or damage the extinguisher resulting
in possible injury to the operator
.
Select a dry, warm, and preferably enclosed location with
atmospheric conditions of not more than 55% relative humidity
and ambient temperatures of not less than 65 °F (18 °C).
HYDROTEST
Extinguishers shall be hydrostatically tested at regular
intervals as required in the latest edition of NFPA 10,
Standard for Portable Fire Extinguishers, or more frequently
when inspection or maintenance indicates a specific need.
Such tests are usually required on extinguisher shells, some
cartridges, and certain hose assemblies.
IF, AT ANY TIME, AN EXTINGUISHER SHOWS
EVIDENCE OF CORROSION OR MECHANICAL DAMAGE,
THE EXTINGUISHER SHALL BE SUBJECTED TO A
HYDROSTATIC PRESSURE TEST, OR REPLACED.
!
WARNING
AIR OR GAS SHOULD NOT BE USED FOR PRESSURE
TESTING AS FAILURE OF THE SHELL COULD BE VIOLENT
AND DANGEROUS.
THE EXTINGUISHER SHALL BE EMPTIED AND
HYDROSTATICALLY TESTED AT TWELVE-YEAR
INTERVALS. The test may be conducted within twelve months
of the specified interval.
WELDING/BRAZING
Field repair of ANSUL cartridge-operated hand portable
extinguishers is allowed only if the repairs are made in accor-
dance with good silver brazing practices and the following
restrictions:
–
Repairs shall be made by means of silver brazing only.
–
Silver brazing is restricted to the carrying handle lug,
nozzle holster nuts, hanger attachment, and the visual seal
attachment.
–
Repairs MAY NOT BE MADE TO THE SHELL ITSELF.
Thus, if the mild steel shell is damaged as by tearing of
the parent metal from the shell, the extinguisher must be
discarded.
–
After completion of repairs, the extinguisher shall be hydro-
statically tested in accordance with the
ANSUL Hydrostatic
Test Instruction Manual
(Form No. F-7602, latest revision).
RECORD KEEPING
Each extinguisher shall have a tag or label securely attached
that indicates the month and year the maintenance was
performed and shall identify the person performing the
service. The record or tag shall indicate if recharging was
also performed. At least monthly, the date the inspection was
performed and initials of the person performing the inspection
shall be recorded.
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