Amerex 05618 User Manual

Page 5

tester consisting of a flashlight having an open circuit and a set of two wires with a conductor (clamps or
probe) at each end. (NFPA-10 Appendix A).

NOTE: Carbon dioxide hose assemblies require hydrostatic testing every 5 years to the same test
pressure as the cylinder (3000 psi [20.69 MPa]).

7. Inspect cylinder valve assembly for corrosion or damage to hose thread connection. Visually inspect the

safety disc assembly for obstruction or damage. Valve removal and/or valve part replacement should be
made only after completely discharging the contents of the cylinder.

8. Inspect the wheels to insure they rotate freely. Lubricate as required.

9. Check carriage assembly for loose nuts, bolts, frame distortion or damage. Check welds for damage or

corrosion. Replace damaged parts or make repairs as necessary.

10. Reinstall horn to shut-off valve and valve to hose. Reconnect the hose to the agent cylinder. Properly

coil the hose on the rack and horn in the clips.

11. Weigh extinguisher and compare with weight printed on the Pictogram operating instruction on the label

(plus the weight of the cylinder(s) stamped on the cylinder valve(s). recharge extinguisher if weight is not
within indicated allowable tolerances (more than 5 lbs. per cylinder).

12. Install new tamper seal and record service data on the extinguisher inspection tag.

13. If the extinguisher has been moved to perform service, make sure that it is returned to its proper location

RECHARGE

RECHARGING [NFPA-10] is the replacement of the extinguishing agent .

RECHARGING PROCEDURE

WARNING: Before attempting to recharge be sure the extinguisher is completely empty and depressurized. Use
only an approved source of carbon dioxide (see minimum specifications in NFPA-10 Chapter 4 Inspection,
Maintenance and Recharging). Do not use dry ice converters. Use an approved pump, hose and recharge
adapter to insure safe and efficient recharge operations.

1. Perform steps 1 thru 10 of the Maintenance procedure.

2. Discharge all remaining carbon dioxide from the extinguisher.

NOTE: The Model 334 & 335 (100 lb.) extinguishers have two 50 lb. cylinders manifolded to a
common discharge hose. The manifold must be removed before attempting to recharge the
cylinders.

3. Place 50 lb. cylinder on an accurate scale (the full weight

– cylinder, valve and CO2 is stamped on the

valve). Install recharge adapter. Connect carbon dioxide supply line to the recharge adapter.

Move “T” handle on the cylinder valve to the open position and pump 50 lbs. (22.7 KG) of clean, dry
carbon dioxide into the cylinder.

When the proper weight is reached, move the “T” handle on the cylinder valve to the closed position.
Shut off CO2 pump and vent supply line.

6. Remove the CO2 supply line and recharge adapter from the cylinder valve. .

7. Check for leaks using leak detection fluid or a solution of soapy water. If any leaks occur, refer to the

Troubleshooting Guide.

8. Install ring (locking) pin and lockwire seal on cylinder valve(s). Attach new recharge tag.

9. Install cylinder(s) to the carriage and properly secure.

10. Attach the hose and horn assembly to the cylinder valve. Install hose and horn assembly on carriage.