Bulletin: SVB-118

Date Issued: Apr 19, 2006

Category: Parts/Warranty

Subject: Door warning switch modification

Machine Models: ALF-MAX¨

Back to Index
 

Problem

Recommended Action

Modification Procedure

Problem:

Customers have reported reliability problems with operation of the access door warning switch assembly. This switch assembly is mounted on the stationary frame of the sliding access door, and interrupts normal workstation operation if the sliding access door is opened.  Due to tolerances, the mating actuator for the switch assembly may not reliably perform as intended, as a result preventing the ALF¨ MAX from starting if the door has been opened and then closed. This condition may lead to excessive production delays while troubleshooting is performed. This warning switch assembly must be operating properly to enable reliable, continuous operation of the ALF¨ MAX workstation.

In response to these reports, the vendor STI has identified a longer replacement actuator that will provide more reliable performance than the originally installed actuator. Alliance has incorporated this replacement part as standard equipment for all new production ALF¨ MAX workstations.

Back to top

Recommended action:

Alliance strongly recommends that ALF¨ MAX customers replace the part below on each affected ALF¨ MAX within 30 days after receipt of this service bulletin. The parts kit required to accomplish this change will be provided at no charge to customers with the affected in-service machines.  

Back to top

Modification Procedure:

If you need additional assistance to perform this modification or have any questions, please call Mr. Gary Kneale of Alliance Field Service at: (509) 842-5134 for further information.

1. De-energize the machine per the Operator Manual.

2. Open the sliding access door and replace the part listed below (vendor part numbers shown - the Alliance p/n remains the same (1030789).

	Installed parts	Replacement parts
Actuator	44534-0730	44534-0731

The replacement part is a direct substitution for the installed part – no modifications to the ALF¨ MAX are required. Adjust the side screw on the actuator to insure that the actuator fingers are positioned to properly and consistently mate into the switch assembly.

3. Close the sliding access door, reenergize the machine per the Operator Manual, and resume normal ALF¨ MAX operation.

4. Test for proper operation of the access door warning switch assembly by confirming that the ALF¨ MAX stops when the access door is opened, and that the ALF¨ MAX starts when the door is fully closed. Repeat several times and re-adjust the actuator if necessary.

5. Reset the ALF¨ MAX and resume normal operation.

Back to top

Back to Index