Accusonic 8510+ series Reference Manual page 84

B-10 Accusonic Model 8510+ Series Flowmeter
Note: If the transducer fails to move as the jacking screw is loosened, it may be jammed or there
may be low pressure in the conduit. Try alternately tightening and loosening the jacking screw and
pulling on the transducer to release it. If it does not move, contact Accusonic for advice.
Warning:
of the jack and the transducer. If the transducer is caught and then suddenly breaks free
when there is too much clearance, the resulting impact could damage the equipment and
cause a safety hazard.
12. Continue to retract the transducer until 7 5/8 (195mm) inch of the round transducer body (not counting
the square back) is exposed.
Warning:
13. Close the valve on the transducer mount.
14. Completely back off the jacking screw.
15. Grasp the transducer by the square shank and the cable connector and rotate it back and forth slightly
to pull it completely out of the mount.
Note: The transducer mount has a movable collar and yoke that serve to align the transducer in
the conduit. These were set, locked and sealed during installation. If the collar or yoke are loose
now, the transducer will need to be realigned; contact Accusonic for advice.
16. Inspect the transducer face for growth or buildup. Remove any buildup with a hard nylon scrubber
(Dobie) and mild detergent (Joy).
Note: Handle the transducer with care. Do not cut or nick the O-rings or try to remove them from
the transducer. Do not bend the connector. Protect sealing surfaces from abuse.
Caution: Once the transducer face has been cleaned, do not contaminate it with grease, oil or
hand or finger prints, as such film will degrade the performance of the unit.
17. Just prior to assembly, lightly lubricate the O-rings with an appropriate O-ring grease, Parker O-Lube
or equivalent.
Warning: Do not use silicone-based grease
18. Gently slide the transducer approximately 1/2 inch (13mm) into the mount - just until it remains in
place.
Note: Transducers are position-specific. Always reinstall a transducer in the same location from
which it was removed.
Note: When replacing one transducer with a new one, double check that the part number of the
new unit exactly matches the number of the old one. Make certain that an inner path transducer is
replaced with an inner unit and that an outer path transducer is replaced with an outer unit.
Caution: Be sure that the connector shaft that extends from the transducer back is positioned so
that it will engage with the saddle located on the mount as the transducer is pressed into place.
19. Tighten the jacking screw until the pointed tip engages the recess on the transducer.
20. Use a 1/2 (13mm) inch open face wrench on the hex end of the jacking screw to tighten the jacking
screw and press the transducer into the mount. Stop when only 7 5/8 inches (195mm) of the round
transducer body (excluding the square back) is visible above the shoulder of the mount.
21. Slowly open the valve all the way.
22. Continue to tighten the screw and press the transducer into the mount until either it meets increased
resistance or until the shoulder of the jacking screw comes flush with the bearing level. Do not advance
the jacking screw shoulder past the surface of the face of the jacking tool.
Never allow more than 1/16 (1.5mm) inch clearance between the contact point
Retracting the transducer too far may allow fluid to leak from the mount.