Pressure Vs. Temperature; Fill Tolerances - Kidde Fire Systems ECS Manual

15. Monitor the scale and record the empty cylinder assembly weight. Determine the charge
weight using the formula C=A+B+N
of the HFC-227ea agent indicated on the valve nameplate and N
trogen charge.
16. Set the 3-way valve (Item 9) to allow flow from the HFC-227ea supply to the cylinder.
17. Open the valves (Items 29 and 33) and start the pump (Item 14).
18. Monitor the pressure of the cylinder with the pressure gauge (Item 34). Monitor the weigh
scale (Item 3).
Note: The 44 PSIG (3.0 bar gauge) pressure applies to the filling procedure without nitrogen
and HFC-227ea at 70°F ± 10°F (21°C ± 5°C). When the temperature is other than 70°F
(21°C), refer to Table 6-7 for required total pressure. Do not fill HFC-227ea cylinders
at temperatures below 60°F (16°C) or above 90°F (32°C).
The final pressure required, after the charged container has had sufficient time to stabilize,
is 44.1 PSIG @ 70°F (3 bar gauge @ 21°C).
19. When the scale indicates a fill weight of the agent determined in Step 15, shut off the pump
(Item 14) and close the HFC-227ea supply valves (Items 29 and 8). Do not remove the
recharge adapter (Item 1). Fill tolerances are listed in Table 6-8.
Max Cylinder Capacity
lb. (kgs)
20. Obtain the temperature of the HFC-227ea in the supply line. This is required for the N
ing procedure.
21. Remove the pilot actuation port protection cap and assemble the seating adapter (Item 2)
with the flexible hose on the cylinder valve actuation port.
22. Open the valves (Item 6 and 16) and adjust the regulator (Item 17) to momentarily apply
450 to 600 PSIG (31 to 41 bar) nitrogen pressure to the actuation port to firmly seat the
cylinder valve piston.
23. While momentarily maintaining pressure on the actuation port, open the vent valve (Item
4) on the recharge adapter (Item 1) to rapidly vent HFC-227ea from the valve assembly
outlet port. The sudden decrease in pressure at the valve outlet will ensure the valve seat
stays in the closed position.
24. Leave the vent valve (Item 4) open. Close valve (Item 6) and open valve (Item 5) to vent
nitrogen from the seating adapter.
06-236115-001
Table 6-7. Pressure vs. Temperature
Pressure versus Temperature
Temperature °F (°C)
60 (15.6)
70 (21.1)
80 (26.7)
90 (32.2)
Table 6-8. Fill Tolerances
Less than 100 lb.
(45.3 kg)
+ 0.5, -0 (+0.22, -0)
where A is the empty cylinder weight, B is the weight
2
Pressure PSIG (bar)
34.4 (2.37)
44.1 (3.04)
55.1 (3.79)
67.6 (4.66)
100 too 300 lb.
(45.3 to 136 kg)
+1, -0 (+0.45, -0)
6-11
Post-Discharge Maintenance
is the weight of the ni-
2
300 lb. and greater
(136 kg and
greater)
+2, -0 (+0.9, -0)
October 2014
fill-
2