The following report was received via fax:
Fisher Information Notice: FIN 2013-01; 9 January 2013
Subject: Type 546NS Transducers
Equipment Affected By This Information Notice: Type 546NS Transducers shipped prior to 19 December 2012.
Purpose:
The purpose of this Fisher Information Notice (FIN) is to alert users of the Type 546 and 546NS Transducers, shipped prior to 19 December 2012, that Fisher Controls International LLC (Fisher) was made aware of a situation which may affect the performance of the aforementioned equipment. We are informing you of this circumstance in accordance with Sections 21.21(b) and 50.55 (e) of 10CFR21.
Applicability:
This notice applies only to Fisher Type 546 and 546NS Transducers shipped prior to 19 December 2012 that are not in operation, installed or in service.
Discussion:
Recently, while a Fisher maintenance engineer was installing a Type 546NS Transducer in a non US customer's plant, the instrument did not perform as expected.
Upon investigation of the unit, it was determined that the vent hole to the relay was plugged which resulted in the build up of pressure inside the housing. This increased pressure will cause the output pressure to ramp up to supply pressure. In the event the relay is plugged, users will easily detect ramping up of the output pressure immediately after the sealed unit is put in service, which is why this FIN applies to units that are not yet in service.
Action Required:
All Type 546 and 546NS Transducer units shipped to customers prior to 19 December 2012 and not already-in-service should be checked for this restriction of the case vent. Units in-service with the cover installed and properly working will not have a plugged case vent.
10CFR21 Implications:
Fisher requests that the recipient of this notice review it and take appropriate action in accordance with 10CFR21.
If there are any technical questions or concerns, please contact:
George Baitinger
Manager; Quality
Fisher Controls International LLC
205 South Center Street
Marshalltown. IA 50158
Fax; (641) 754-2854
Phone: (641) 754-2026
George.Baitinger@Emerson.com