This note superceded by replacement of processor board with 08BH188AT.
12/05/12 GLL






REPLY TO PARTS & SERVICE: 504-469-9777
E-MAIL: [email protected]
DATE: February 28, 2003 YOUR REF.NO.:
MILNOR REF NO.: FAX NO.:
TO: Parts/Service Managers FROM: Gary Lazarre
COMPANY: MILNOR Dealers RETURN TO: Diane Schnauder, Service Dept.

SUBJECT: ELECTRONIC INTERFERENCE & LEVEL TUBING SOLUTIONS FOR "H" BOARDS

On some machines in the 30", 36" and 42" rigid classifications using the "H" processor board (PN. 08BH18***) we've found there are some intermittent problems with the display and processor board due to what appears to be Electro-Magnetic Interference (EMI).

We've "arrested" this problem in production by the use of ferrite beads on all wires leading to and from the processor board.

There are machines in the field that are reported to have intermittent problems with seemingly no explanation. We have concluded that the addition of these ferrite beads will more than likely fix these intermittent problems.

The ferrite bead that we're using will "clamp on" to the wires leading away from the processor board. You will need five ferrite beads for each machine. The part number for the ferrite bead is 08AL5FERR. These are available from our Parts Department. These parts are offered at our cost so you can have some ready to apply as needed to these machines.

Coupled with the issue of the processor board "crashing", we also found an issue with the tubing for level control. This probably forced the replacement of many processor boards that were not faulty. The tubing goes from the pressure transducer to the barb fitting at the bottom of the shell. The tubing that was being used was "kink resistant", but the inside diameter was found to be too large. The result was that we had intermittent level issues and occasional overfilling. This would usually take place a few days after the last intervention with the tube. Some of you may have found solutions with sealing the end of the tube as it fits onto the barb fittings using some type of silicon sealant.

Kit number KYPTT00001 contains new tubing along with new style fittings that have been recommended to us by Motorola who manufactures the pressure transducer.

The new tubing makes a snug fit onto the barb fittings and the tubing clamp "nut" completes the seal. We have been cautioned to not over torque the nut as it might damage the plastic barb on the pressure transducer.

These kits are available at no charge to you. We would recommend that there be at least one kit on every service van so that you can take corrective action quickly when at the customer's site.

Production machines with new tubing began on approximately 2/27/03. You will notice a brass nut on the tubing connection to the pressure transducer as evidence that the new tubing is in use.

If you have any questions, please call Tech Support at 504-712-7780, fax 504-469-9777 or e-mail [email protected]

Best regards,

PELLERIN MILNOR CORPORATION
Gary Lazarre
Gary L. Lazarre
Manager
Customer Service

GLL/das