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1.
Turn on the photometer and allow it to operate for a minimum of 5 minutes.
Leave the valve in the “CLEAR” setting.
2.
Check the oil level of the generator – it must be within 1/8” of the level line
when the generator is sitting level.
3.
Establish the 100% and 0% concentration levels for the photometer.
4.
Remove the diffuser by raising the sash as high as it will go, and then removing
the two acorn nuts with a 7/16” wrench or socket, as shown in Figure 5-11.
Figure 5-11
Removing the diffuser acorn nuts (Dress
panel and lamps removed for clarity
only).
Note: The diffuser acorn nuts are secured to the studs with a removable thread locking
compound to prevent them from vibrating loose during shipment of the Logic+. There
may be some resistance the first time the nuts are removed; this is normal. No
additional thread locking compound need be applied to these acorn nuts unless the unit
is being prepared for shipment.
5.
Lower the front edge of the diffuser until it clears the bottom of the sash, and
then pull the diffuser straight out of the cabinet, as shown in Figure 5-12.
Figure 5-12
6.
The Logic+ is now ready for the Supply HEPA Filter Leak Test. Set the
photometer sampling valve to “DOWNSTREAM”. Ensure there is a proper vacuum
at the sampling port of the pistol.
