Cleaning The Us Epa Pm10 Inlet; Figure 5-2. 640X Option Disassembly - Teledyne T640 User Manual

5.2.2.

CLEANING THE US EPA PM10 INLET

08354A DCN7303

Figure 5-2. 640X Option Disassembly

1. Power off the pump from the Setup>Vars>Pump Control menu.
2. Mark each assembly point of the sampler inlet with a pen or pencil to provide
"match marks" during reassembly.
"keyed."
3. Disassemble the sample inlet unit according to the figure above, taking care
to retain all the parts. Note: If the assembly screws appear frozen, the
application of penetrating oil or commercial lubricant will make removal
easier.
4. Remove any insects or other debris from the filtering screen.
5. Using a soft brush, cloth, and cotton swabs, lightly scrub all interior surfaces
and components with distilled water and/or the general-purpose cleaner. Pay
particular attention to small openings and crevices. Cotton swabs and/or a
small soft brush are most helpful in these areas. Using laboratory tissue and
cotton swabs moistened with distilled water, wipe all surfaces to remove any
remaining deposits. Completely dry all components.
6. Check all the O-rings for distortion, cracks, fraying, lack of lubricating grease,
or other problems. Apply a thin coating of vacuum grease or replace the O-
rings as necessary.
7. Reassemble the unit in accordance with the previously scribed match marks.
Take particular care to ensure that all O-ring seals are properly sealed and
that all screws are uniformly tightened.
8. Power up the pump from the Setup>Vars>Pump Control menu.
Teledyne API Model T640 PM Mass Monitor
Critical assembly points are already
55