Amerex 14795 - Manual (Page 9)

9
RECHARGING HALOTRON I EXTINGUISHERS
with
Amerex Model 890, 35 lb. Halotron I Recharge System & P/N 14538 Halotron I
Recharge Kit
SET UP INSTRUCTIONS
1. Attach fill adapter P/N 14649 to the recharge cylinder valve.
2.
Install “Female Quick connect” end of charging hose assembly with toggle valve to the
fill adapter.
3. Verify that there is at least 100 psig of argon pressure in the recharge system cylinder.
Add argon gas if required.
RECHARGING AN EMPTY HALOTRON I EXTINGUISHER
1. Extinguisher to be recharged must be properly serviced and a new o-ring and valve stem
assembly installed (see Amerex Halotron I parts sheet). The extinguisher cylinder
interior must be clean and dry.
2. Connect the empty extinguisher to a vacuum pump. Open extinguisher valve (depress
operating lever) and evacuate the extinguisher to approximately 27 inches (at sea lever).
Close extinguisher valve (release operating lever) and disconnect from the vacuum
pump.
3. Install proper Halotron I fill adapter to extinguisher (see parts sheet).
4. Connect charging hose to the extinguisher fill adapter. Place extinguisher on an
accurate scale.
5. O pen the valve on the Model 890 recharging system by rotating the “T” handle toward
the charging hose, filling the hose with Halotron I.
6. Set tare on the scale.
7. Open the extinguisher valve (depress operating lever) and begin transfer of Halotron I
liquid to the extinguisher.
8. Periodically close the extinguisher valve (release operating lever) and check the weight.
Also check the pressure in the recharge system cylinder (a pressure of 100 psig argon
must be maintained in the recharge system cylinder).
9. When the extinguisher has reached the proper fill weight, close the extinguisher valve
(release operating lever) and close the recharge system cylinder valve (rotate “T” handle
away from charging hose).
10. Attach a regulated argon supply hose to the male quick connect of the toggle valve on
the charging hose. the regulator should be set to approximately 10 psi higher than the
extinguisher operating pressure.
11. Open the toggle valve on the charging hose.
12. Open the extinguisher valve (depress lever) and pressure with argon until the pressure
equalizes.
13. Close the extinguisher valve (release lever) and gently rock the extinguisher back and
forth for 10-15 seconds allowing the argon to be absorbed into the Halotron I and
causing the extinguisher pressure gauge reading to fall.
14. Repeat Steps 12 and 13 until the extinguisher pressure gauge equalizes with the argon
pressure supply (just slightly above the extinguisher operating pressure). This normally
takes 3 repetitions.
15. Close the toggle valve and disconnect the argon gas supply line.
16. Disconnect the filled and pressurized extinguisher from the charging hose and check for
proper fill weight. Check extinguisher for leaks and remove all liquid residue.
17. Install ring (safety) pin, lockwire (tamper) seal and recharge tag.
18. Install nozzle or hose assembly.
19. Hold extinguisher for 24 to 48 hours, verify pressure and return to customer.