Maintenance
06-237619-001 6-9 April 2020
6-6.7.2 Lever Operated Control Head Test for Nitrogen Pilot Cylinders
Lever Operated control heads must be tested semi-annually for proper operation. This test can
be performed without discharging the Kidde IGS System nitrogen pilot cylinders. Test one
hazard area at a time before proceeding to the next, as follows:
1. Remove all lever operated control heads from all Kidde IGS nitrogen pilot cylinders
serving the hazard area being tested.
2. Operate the lever operated control heads and ensure the pin protrudes from the bottom of
the control head after moving the lever to the open position. Replace all damaged heads.
Repeat the test if any control heads have been replaced.
3. Reattach all Lever Operated control heads to the threaded port on the pilot cylinder valve.
Tighten the swivel nut securely. Make certain each control head is in SET position before
reconnecting to cylinders. Failure to follow this procedure will result in accidental Kidde IGS
System discharge.
6-6.7.3 Lever/Pressure Operated Control Head Test for Nitrogen Pilot Cylinders
Lever/Pressure Operated control heads must be tested semi-annually for proper operation.
This test can be performed without discharging the Kidde IGS System nitrogen pilot cylinders.
Test one hazard area at a time before proceeding to the next, as follows:
1. Remove all lever/pressure operated control heads from all Kidde IGS nitrogen pilot cyl-
inders serving the hazard area being tested.
2. Disconnect the lever/pressure operated control head from the incoming pressure line.
3. Operate the lever on the control heads and ensure the pin protrudes from the bottom of
the control head after moving the lever to the open position. Replace all damaged heads.
Repeat the test if any control heads have been replaced.
4. Reset the lever and pin.
5. Connect the lever/pressure operated control head to a spare nitrogen pressure supply ca-
pable of providing 1800 psi of nitrogen. Supply pressure to the control head and verify the
pin protrudes from the bottom of the control head.
6. Vent the pressure and reset the control head.
7. Reattach all the control heads to the threaded port on the pilot cylinder valve. Tighten the
swivel nut securely. Make certain each control head is in SET position before reconnecting
to cylinders. Failure to follow this procedure will result in accidental Kidde IGS System dis-
charge.
CAUTION
All control heads must be removed from the Kidde IGS nitrogen pilot cylinders
prior to testing to prevent accidental cylinder discharge.
CAUTION
Lever Operated control heads must be reset manually before reconnecting to
the pilot cylinder valves.
CAUTION
All control heads must be removed from the Kidde IGS nitrogen pilot cylinders
prior to testing to prevent accidental cylinder discharge.
CAUTION
The Lever on the Lever/Pressure Operated control heads must be reset
manually and the pressure must be venteed before reconnecting to the pilot
cylinder valves.
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