Kidde Fire Protection 400 Series, Design, Installation, Operation, And Maintenance Manual

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Maintenance
06-237518-001 6-7 July 2018
6-7 INSPECTION PROCEDURES-2 YEAR
In addition to performing the every 6 month inspection, perform the following procedures
every 2 years:
6-7.1 Blow Out Distribution Piping
Before blowing out the system, remove pipe caps from the ends of the distribution piping to
allow any foreign matter to blow clear. In addition, remove any Manifold Safety Devices. Blow
out all distribution piping with dry air or CO
2
to make sure there are no obstructions.
1. Remove all release units from the agent cylinders.
2. Remove all pipe caps on dirt traps from distribution piping to allow any foreign matter to
blow clear.
3. Remove all Manifold Safety Devices.
4. Discharge test cylinder into system manifold. Use of CO
2
or dry air is acceptable. Discharge
duration is to be of sufficient length to insure that all piping is blown clear.
5. Reinstall all pipe caps and Manifold Safety Devices as required.
6. Reconnect all release units to agent cylinder valves.
WARNING
Do not use water or oxygen to blow out pipe lines. The use of oxygen is
especially dangerous as the possible presence of even a minute quantity of
oil may cause an explosion.
WARNING
Do not disconnect release units from flexible hose(s). Discharge of the
system will cause flexible hose, without release units attached, to flail
violently, resulting in possible equipment damage and severe bodily injury
to personnel.