SMAR fy303, Operation, Maintenance & Instruction Manual

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FY303 – Operation, Maintenance and Instructions Manual
4.4
4. Remove the o-ring’s with an appropriate tool;
5. Dive the part in petroleum base solvent and dry it with compressed air (apply the
compressed air directly in the smaller orifice for the air to get out through the bigger orifice).
6. Introduce the appropriate tool (PN 400-0726) into the restriction orifice to prevent any
possible obstruction;
7. Mount the o-rings again and screw the restriction in the positioner.
8. The equipment can be supplied with air again.
Change of the Filter Elements
Change the positioner filter elements with a minimum stated period of 1 (one) year.
The instrumentation air supply must be clean, dry and non-corrosive, following standards indicated
for the American National Standard
“Quality Standard for Instrument Air" ANSI / ISA S7.0.01 - 1996.
If the instrumentation air does not comply with the above mentioned standards, the user has to
consider changing the positioner filter elements more frequently.
EXHAUST PORT
Air is vented to the atmosphere through the two exhausts ports located behind the transducer
nameplate. A foreign object interfering or blocked exhaust port provides a way to increase the
output. Cleaning by spraying it with a solvent.
NOTE
Never use oil or grease in the spool; otherwise the positioner performance will be impaired.
Electronic Circuit
Plug transducer connector and power supply connector to main board (
5 ). Attach the display to the
main board. Observe the four possible mounting positions (Figure 4.2). The mark indicates up
position.