62
Disconnecting Service Tank/Re-arming System
1. Relieve pressure in the primary actuator hose by slowly disconnecting the 1/4” refrigerant test hose
from the Nitrogen Service Cylinder.
2. Relieve pressure in the actuation line by slowly disconnecting the 1/4” refrigerant test hose from the
PAK service port, as well as removing the 1/4” plug from the last fire system actuator.
3. Disconnect the 1/4” refrigerant test hose from the fire system piping distribution port.
4. Test the locking function of each PAK and SVA by pushing firmly on the piston. The piston should
remain in the actuated (extended) position.
5. Reset each PAK and any SVAs by depressing the spring-loaded pin on the piston and pushing the
piston into the body of the actuator.
NOTE: If a PAK or SVA fails to operate or cannot be properly reset, the unit must be replaced. Refer
to “MAINTENANCE” on page 63 for replacement procedures.
6. If all of the above is confirmed, secure the 1/4” plug on the last fire system actuator. Verify all of the
actuation lines between the PAK and SVA(s) are secure and tight. Place Schrader Valve caps onto
service ports and tighten.
7. Install the PAK and any SVAs onto their respective cylinders. Refer to Figure 49.
8. Check all cylinder gauges to confirm proper pressure, refer to Table 1 on page 6. Refer to “Charging
Cylinders” on page 72 for charging cylinder details.
9. Re-arm the control panel by placing the package in “armed mode.”
10. Connect the primary actuator hose securely to the Schrader valve port on the primary cylinder.
11. Verify that the Supervisory Pressure Switches have reset per the control panel manual instructions.
Figure 49 - Set Position
1. PAK in Set Position
2. SVA in Set Position
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