Maintenance
October 2014 5-4 06-236115-001
5-4.2.10 Inspect Discharge Nozzles
Inspect discharge nozzles for dirt and physical damage. Replace damaged nozzles. If nozzles
are dirty or clogged, refer to Paragraph 5-6.1.
5-4.2.11 Inspect Pull Stations
Inspect all manual pull stations for cracks, broken or cracked glass plate, dirt or distortion.
Inspect the station for signs of physical damage. Replace damaged glass. Replace the station
if damaged. If necessary, clean as directed in Paragraph 5-6.1.
5-4.2.12 Inspect Pressure Switches
Inspect pressure switches for deformations, cracks, dirt or other damage. Replace the switch
if damaged. If necessary, clean the switch as directed in Paragraph 5-6.1.
5-4.3 Inspection Procedures, Semi-Annual
5-4.3.1 Pressure Switch Test
Perform the pressure switch test as follows:
1. Contact the appropriate personnel and obtain authorization for shutdown.
2. Ensure the hazard area operations controlled by pressure switch are operative.
3. Manually operate the switch by pulling up on the plunger and verify that hazard area oper-
ations controlled by pressure switch shut down.
4. Return the pressure switch to the SET position.
5. Reactivate all systems that were shut down by the pressure switch (such as power, venti-
lation systems and compressors).
CAUTION
Nozzles must never be painted.
Nozzles must be replaced by nozzles of the same part number. (A part number
is located on each nozzle.) Nozzles must never be interchanged since random
interchanging of nozzles could adversely affect proper HFC-227ea distribution
and concentration within a hazard area.
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