6-3.5 Salvaging Hfc-227Ea From A Leaking Cylinder Assembly - Kidde Fire Systems ECS Manual

Post-Discharge Maintenance
6-3.5 Salvaging HFC-227ea from a Leaking Cylinder Assembly
Target container must be significantly larger than the source container to
prevent dangerous pressure buildup.
WARNING
1. Close the HFC-227ea supply valve (Item 19) and close valve (Item 21). Open valve (Item
20) to vent pressure. Disconnect the charging flexible hose from the HFC-227ea supply
valve (Item 19).
2. Connect the salvage discharge assembly to the flexible hose coupling. Then assemble the
discharge assembly to the outlet port of the leaking cylinder assembly (not shown).
3. Position an empty cylinder assembly of suitable size for HFC-227ea storage on the scale.
Record the empty weight.
4. Connect the recharge adapter (Item 1) to the empty cylinder outlet port.
5. Assemble a manually operated control head onto the cylinder valve actuation port of the
leaking cylinder assembly.
6. Check that all charging system valves are closed. Open valves (Items 8, 9, 10, 11, 21 and
27). Set the manually operated control head to the OPEN position. The pressure gauge
(Item 28) should indicate the supply pressure. Crack vent valve (Item 30) until HFC-227ea
liquid is present. Shut valve (Item 30).
7. If the cylinder assembly on the scale is of sufficient size and is being used to store HFC-
227ea, monitor the scale, open the valve (Item 29) and start the pump. Continue pumping
until a maximum of HFC-227ea is transferred from the leaking cylinder assembly as indi-
cated by a pressure drop on the pressure gauge.
8. If the cylinder assembly on the scale is being charged, fill with the required weight of HFC-
227ea by adding the required pounds to the empty cylinder weight. Follow the charging
procedure outlined in Section 6-3.3. Conduct a cylinder leak test as described in
Paragraph 6-3.4.
9. Continue to transfer the HFC-227ea agent until the leaking cylinder assembly is empty as
indicated by pressure drop as measured by the pressure gauge. Shut off the pump and
close the hose control valve (Item 29) and valve (Item 21).
10. Open valve (Item 20) to vent pressure, then disassemble the adapter from the outlet port
of the leaking cylinder assembly and from the flexible hose hookup. Reassemble the flexible
hose to the HFC-227ea supply valve (Item 19).
11. If the cylinder assembly being recharged, is not charged sufficiently, continue the charging
procedure as indicated in Paragraph 6-3.3 using the HFC-227ea supply.
October 2014 6-14 06-236115-001