Amerex 05619 - Manual (Page 5)

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4. Check the date of manufacture stamped on the bottom of the extinguisher for model B571 and on the wall
hanger loop for model 571. Cylinder must be hydrostatically (proof pressure) tested every 12 years to the
test pressure indicated on the nameplate (585 psi [4035 kPa]).
5. Visually inspect the pressure gauge:
a. if bent, damaged or improper gauge, depressurize and replace
b. if pressure is low, check for leaks
c. if over pressurized (overcharged), depressurize the extinguisher and follow recharge instructions
6. Remove and check ring pin for freedom of movement. Replace if bent or if removal appears difficult.
7. Inspect the discharge lever for dirt or corrosion that might impair free movement. Inspect carrying handle
for proper installation. If lever, handle or rivets are damaged, replace with proper Amerex parts.
8. Remove the hose and extension applicator by detaching the female swivel adapter from the hose and
hose from the discharge valve. Inspect the hose, female swivel and extension applicator for damage.
Make sure that the rubber o-ring inside the female swivel coupling is in place and in good condition.
Replace damaged parts as necessary. Blow air through the hose and extension applicator assembly to
insure that the passage is clear of foreign material and powder residue. Inspect the diffuser in the
extension applicator horn - it must be tight to allow proper discharge characteristics.
9. Visually inspect the inside of the valve body (through the hose connection orifice). Appearance of powder
in the valve may indicate that the extinguisher has been partially discharged and should be recharged.
10. Inspect the valve body for signs of corrosion or damage to the hose thread connection. Replace valve
assembly as necessary following the depressurizing and recharge procedures. If valve removal is
required, complete all steps in the "Recharge Procedure".
11. Reconnect the extension applicator to the discharge hose male swivel coupling. Rotate the hose
assembly several times to verify that the swivel operates freely (disconnect again and clean the inside of
the female swivel with a small brush and compressed air if the rotation is impeded). Arrange the hose
and extension applicator assembly according to the installation instructions on page 10.
12. Install new tamper seal and record service data on the extinguisher inspection tag.
13. Return to its proper location. Install on/in wall hanger bracket, vehicle bracket or dolly cart making sure it
fits properly. Replace mounting bracket if necessary.
RECHARGE
Recharging (NFPA 10) is the replacement of the extinguishing agent and also includes the expellant for
this type of extinguisher.
WARNING :
1. Before attempting to recharge be sure the extinguisher is completely depressurized.
2. Never have any part of your body over the extinguisher while removing the valve assembly.
3. Use a protective shield between you and the pressure gauge while charging an extinguisher. Do
not stand in front of the gauge if a shield is not available.
4. Use a regulated pressurizing source of ARGON ONLY. Set the regulator to not more than 220 psi
(1520 kPa).
5. Check and calibrate regulator gauge at frequent intervals. The regulator gauge should be used to
determine when the intended charging pressure has been reached. Do not use the extinguisher
gauge for this purpose.
6. Never leave an extinguisher connected to a regulator of a high pressure source for an extended
period of time. A defective regulator could cause the cylinder to rupture due to excessive
pressure.
7. Do not mix types of chemicals in extinguishers, recharge or recovery systems. Mixing ABC,
regular, Purple-K, Super-K or Monnex dry chemicals with a dry powder agent could cause a
serious flare up or explosion if the dry chemical were to contact a combustible metal fire .