PRO902C MANUAL
T
FS
Rev 6.0
August 16, 2007
4-2
D)
Inspect the filter body and cap for particulate accumulation around the filter seats.
Clean the filter body and seat by wiping with a soft cloth.
E)
Lubricate the cap o-ring with a light coating of silicone based high vacuum grease.
F)
Install the
new
filter element onto the cap mandrel and insert the cap and filter into
the filter body.
G)
Align the screw holes in the cap with the screw holes in the body and press the cap
into the filter body. Reinstall the nuts. Hand tighten the nuts, only.
4.4
Quartz orifice replacement
The quartz orifice may be changed by removing the eductor inlet tube. The orifice is sealed in
the bore by an o-ring and may be removed by grasping the orifice with tweezers and pulling
straight back. If the o-ring does not come out with the orifice, remove the or with the
tweezers. Install a new orifice by placing the orifice o-ring on the orifice and inserting the
smaller end of the orifice into the orifice bore.
4.5
Probe head removal
A)
Note the dilution air pressure setting, then turn off the power and air supplies.
B)
Disconnect the air supply tubing to the eductor air jet.
C)
Disconnect the sample tubing from the eductor exhaust.
D)
Disconnect the purge/calibration tubing from the filter cap.
E)
Disconnect the raw sample outlet tubing from the bottom of the filter body.
F)
Loosen the filter body wing nut.
G)
Remove the heater and RTD from the rear of the filter body.
H)
Remove the probe head from the probe barrel.
I)
Prior to reinstalling the probe head, coat the polished probe tip surface with a liberal
amount of silicone-based high vacuum grease. This allows a proper o-ring seal of the
probe head. Install the probe head in the reverse order of removal.
Summary of Contents for PRO902C
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