Operation
April 2020 5-2 06-237619-001
5-2.3 Post-Fire Operation
After a Kidde IGS discharge, qualified fire suppression system maintenance personnel must
perform post-fire maintenance as directed in Chapter 7 of this manual. Observe all warnings,
especially those pertaining to the length of elapsed time before entering the hazard area.
5-3 MAIN AND RESERVE SYSTEMS
After operating the “main” system as described above, place the “reserve” system in standby
mode as follows:
1. Reset all manually operated release units, pressure operated trips, discharge indicators,
manual operation stations, and pressure operated switches. Ensure that the control panel
and all detectors are reset.
2. If the system uses selector valves, manually close the valves.
3. Proceed to the main/reserve transfer switch. Set the transfer switch to the RESERVE posi-
tion.
4. Immediately contact a Kidde distributor for service.
5-4 LOCKOUT VALVES
If employing lock-out valves, it is recommended to lock-out the Kidde IGS when performing
maintenance on the system or there is need to perform work that could cause false alarms and
a discharge. Use the following steps to lockout the system:
1. Unlock the valve and place it in the Closed position.
2. Lock the valve.
3. Verify that a Trouble indicator appears on the control unit.
4. When maintenance or test is complete, unlock the valve and place it in the Open position.
5. Lock the valve.
6. Verify the Trouble indicator is clear on the control unit.
5-5 CYLINDER RECHARGE
Recharge all Kidde IGS cylinders and nitrogen pilot cylinders immediately after use. Return all
cylinders to a Kidde Distributor or other qualified refill agency. Refill in accordance with the
procedures outlined in Chapter 6 of this manual.
WARNING
Do not enter a hazard area with an open flame or lighted smoking materials.
Flammable vapors may cause reignition or explosion. Ensure the fire is
completely extinguished before ventilating the area. Ventilate the area
thoroughly before permitting anyone to enter the hazard area, or use a self-
contained breathing apparatus.
WARNING
The following procedures can be applied only when the reserve system has not
been previously discharged.
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