Pressure Systems 9022 - Manual (Page 148)

Pressure Systems, Inc. NetScanner™ System (9016, 9021, & 9022) User’s Manual
www.PressureSystems.com 5 - 14
Figure 5.6
DH200 Transducer O-Ring
Replacement
(4) Using tweezers, remove the two (2) O-rings from the DH200. Clean the O-ring cup with
a lint-free applicator moistened with a cleaning fluid such as acetone, alcohol, Freon
® , or
any other substance that evaporates quickly and leaves very little residue. Remove any
excess cleaner with the air supply as soon as possible. Do not blow air directly into the
holes of the surface since that can drive the fluid into the transducer and/or rupture the
silicon pressure transducer.
(5) With clean hands, apply a small amount of Krytox ® fluorinated grease to the palm of one
hand and rub it out evenly with your index finger. Place one new O-ring onto your
greased palm. Work the O-ring around until it is evenly greased. The O-ring should shine
when properly lubricated. There should be no white area of excess grease on the O-ring.
Make sure there is only a thin film of lubrication on the O-ring. Using your greased
finger, place the greased O-rings in the cups on the DH200. Ensure that no grease enters
the hole that leads into the transducer.
(6) Reinstall the DH200 as described in Section 5.1.4.
(7) Repeat steps 3, 4, 5 and 6 for each set of O-rings in need of replacement.
(8) Replace the PC-206 board as described in Section 5.1.3.1 and reassemble the module.
(9) Test your scanner to ensure proper operation.