Amerex 14795 - Manual (Page 11)

11
FILLING (LIQUID TRANSFER) OF HALOTRON I EXTINGUISHERS
with
Amerex Models 891 (80 lb.) and 892 (200 lb.) Halotron I Recharge Systems
and P/N 14538 Halotron I Recharge Kit
SET UP INSTRUCTIONS
1. Attach fill adapter (P/N 14648) to the recharge cylinder valve.
2. Confirm that all hoses and components are clean and free of debris. Purge all hoses
with argon. Check for leaks and repair if necessary.
3. Install female quick connect end of charging hose assembly with toggle valve to the
fill adapter.
4. Connect the argon supply line quick connect to the vapor port quick connect on the
recharge system cylinder.
NOTE: IT IS VERY IMPORTANT THAT BULK CYLINDER PRESSURE BE
MAINTAINED AT A MINIMUM OF 100 PSIG (689 kPa) THROUGHOUT THE FILLING
PROCESS USING A CONSTANT FLOW OF ARGON.
REFILLING (LIQUID TRANSFER) OF AN EMPTY HALOTRON I EXTINGUISHER
1. EXTINGUISHER TO BE REFILLED 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 level) and evacuate the extinguisher to approximately 27 inches
(at sea level). 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. Starting with all valves closed, set the argon regulator at 0 psig (0 kPa) and then
open the argon cylinder valve. Set the regulator to 100 psig (689 kPa). Verify the
correct pressure on the pressure gauge and adjust as necessary.
5. Completely open the bulk cylinder vapor valve and let the cylinder pressure stabilize
for one minute before proceeding to the next step. This valve is to remain open
during the entire liquid transfer.
6. Connect the charging hose to the extinguisher fill adapter.
7. Open the cylinder liquid valve on the model 891 or 892 recharging system, filling the
hose with liquid.
8. Place the extinguisher on an accurate scale.
9. Tare weight (zero) the scale. This will take into account the liquid now in the hose
and the net weight transferred will be indicated.
10. Open the extinguisher valve (depress operating lever) and allow liquid transfer into
the extinguisher until the desired weight is achieved as determined by the scale.
11. When the desired liquid weight is reached, close the extinguisher valve (release
lever) and close the Halotron I bulk cylinder liquid valve.
12. Close the bulk cylinder vapor valve and the argon supply cylinder valve.
13. Open the argon gas hose vent (if installed) to relieve pressure in the gas hose.
14. Disconnect the argon gas hose quick connect from the bulk cylinder vapor valve
quick connect.
15. Proceed with final pressurization
– page 12.