SMAR FY301, Инструкция по эксплуатации и техническому обслуживанию

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Maintenance Procedures
5.5
CAUTION
Do not rotate the electronic housing more than 270° without disconnecting the electronic circuit from the power supply.
Figure 5.2 – Transducer Rotation
NOTE
The numbers indicated between parentheses refer to Figure 5.4 – Exploded View
.
1. Remove the flat cable cover (
17
) by releasing the Allen screws (
15
). When removing this cover
(
17
), take care to do not damage the internal board: disassembly it with care. (This part can not be
washed);
2. Remove the analog board (
18
);
3. Remove the electric piezo base (
24
) (This part can not be washed);
4. Remove the restriction (
20
) for cleaning;
5. Remove the intermediate set (
27
) and check the diaphragms integrity; if necessary, clean the
diaphragms with water and neut ral detergent; after that, wash them with alcohol, dry before
mounting;
6. Remove the spool valve (
29
); the cleaning is made with water and neutral detergent; after that,
wash it with alcohol, dry before mounting. Do not use lubricant of any kind in this part;
7. The pneumatic block (
31
) can be completely washed with water and neutral detergent, after that,
wash it with alcohol and verify if it is completely clean, without dust or any kind of impurity. For that,
apply dry compressed air in all block orifices;
8. Verify if the position sensor cover (
33
) does not have indication of water or humidity. (This part can
not be washed);
9. Verify if the position sensor flat cable is damaged, twisted, cut or oxidate.
Piezo Electric Calibration - FYCAL
To mount the positioner:
1. Mount the piezoelectric base (
24
) on the jig;
2. Apply 20 psi at the air pressure input;
3. Apply 0 Volts, then 100 Volts DC and after 0 Volts again (to avoid hysteresys error);
4. Apply 50 Volts DC to the piezoelectric base;