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Bulletin number: SB115
Date issued: August 26, 2009
Machine models: CUBIX Machines (serial numbers P10306, P12366)
To our Valued Customer:
This safety bulletin is part of an ongoing effort to provide quality service and support for all Alliance Machine Systems International, LLC products. If you need assistance or more information, please call Gary Kneale, Field Service Manager, at 509-535-0356 and select option two.
Description of Issue
The range of motion of the pusher frame inside the CUBIX is approximately 6”. When the machine is powered off, the frame is held in place by a pilot-operated load-holding check valve. In the case of check valve failure, the frame can drift to full-down position. If maintenance or operation personnel are inside the machine when this happens, they could become pinched between the moving frame and other parts of the machine or the ground.
Discussion
Alliance has determined that a modification to the pusher frame hydraulic circuit will allow the pusher frame to lower when the circuit control power is removed, eliminating the hazard. It will take approximately 1.4 seconds for the pusher frame to move from full-up to full-down position when control power is removed; the hazard still exists during this time period. A retrofit package, new hydraulic schematic, and instructions have been developed and provided that will allow maintenance staff to implement the solution. In addition, a warning decal reminding personnel to verify that all machine motions have stopped has been included.
Recommended Action
Alliance recommends that you take the following actions within 10 days after receiving this safety bulletin and retrofit package.
- Remove the pilot-operated load-holding check valve in the pusher up/down circuit per the enclosed instructions.
- Install the warning decals next to the handles of the doors into the machine per the instructions.
Should you desire help with this retrofit kit please call our Field Service Department at 509-535-0356 and select Option two.
If you need
additional assistance to perform this task or have any questions,
please call
Mr. Gary Kneale
of Alliance Field Service at: (509) 842-5134.
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