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9/18 IOM-FFDINST
Nailor Industries Inc. reserves the right to change any information concerning product or specification without notice or obligation.
PAO CHALLENGE SYSTEM
An optional PAO Challenge Manifold System is available to provide a reliable,
convenient method of performing a challenge test of the fan filter unit at the face.
**These instructions are to assist a qualified technician in testing the leakage of the fan filter unit.
Filter should be installed for a minimum of 30 minutes before test is performed.
Step 1
Using a flat screwdriver, release the face frame by rotating the four (4) fasteners a 1/4 turn counter clock-wise.
Unhook the safety cables from the filter clips. Set the frame aside.
Step 2
Remove cap from PAO concentration port (brass). Attach UPSTREAM hose (1/4" [6] ID) from photometer to PAO
concentration port.
Step 3
Remove cap from PAO challenge supply port (aluminum). Attach DOWNSTREAM hose (3/8" [10] ID) from
photometer to PAO concentration supply port.
Step 4
Conduct the challenge test per equipment specifications and IEST-RP-CC034.3.
Step 5
Disconnect hoses from ports and securely replace caps.
Step 6
Raise the face frame back into place, reattach the safety chains and secure 1/4 turn fasteners.
