SENTRY Carbon Dioxide Hand Portable Fire Extinguishers
Operation, Inspection, Service and Maintenance,
and Recharge Manual (Part No. 429425)
PAGE 10 REV. 05 2018-OCT-11
RECHARGE
RECHARGE (Continued)
7. Open fill line valve and fill cylinder to correct total weight*
as stamped on valve assembly. DO NOT OVERFILL.
!
WARNING
When performing recharge, use only the proper materials.
The use of other recharging materials may reduce the
efficiency, cause malfunction or result in rupture of the
extinguisher that could cause injury to the operator.
NOTICE
Carbon dioxide (CO
2
) used to fill the
extin
guisher must conform to item
description as specified in UL Standard
154, as follows: ‘‘A commercial grade of
carbon dioxide, free of water and other
contaminants that might cause corrosion
or interfere with the discharge of the
extinguisher. The vapor phase shall be
not less than 99.5 percent carbon dioxide
with no detectable off-taste or odor. The
water content shall be not more than
60 parts per million (ppm) by weight at
–52 °F (–46.6 °C) dew point. Oil content
shall be not more than 10 parts per
million (ppm) by weight.’’
*Total weight includes hose and horn assembly
8. Release spring clamp from operating lever when scale
indicates correct amount of CO
2
has been introduced
into cylinder. Close CO
2
supply line valve and vent CO
2
supply line to outside atmosphere.
9. Install ring pin and visual seal.
10. Remove CO
2
supply line from charging adaptor. Remove
adaptor from valve.
11. Perform leak check on all joints or possible sources of
leakage. (Leak check may consist of a bubble test using
a soapy water solution or any of several commercially
available preparations such as ’’Leak-Tek’’.) If no bubbles
appear, wipe extinguisher clean and air dry. If leaks
(bubbles) appear, refer to Service and Repair section.
12. Reinstall horn or horn/hose assembly.
13. Check weight of recharged extinguisher against weight
stamped on extinguisher valve body. See Figure 7.
FIGURE 7
004994
14. Return extinguisher to its designated location.
15. Personnel performing recharge are usually required to
keep records by way of marking a tag attached or affixed
to the extinguisher and/or in a permanent file. Your
precise guide to record keeping requirements should be
the applicable company, local, state or federal authority
having jurisdiction.
16. Record the date of recharge on the tag (Part No. 2364)
affixed or attached to the extinguisher and in your
permanent file record in accordance with company, local,
state or federal codes, regulations or standards.
