GTR-3455
Doc Ref: Page: 40
Date: 13/01/13 Issue: H
Pr
seal
®
uk
Tray Sealing Solutions
6.6 Gas springs
Proseal machines use a variety of gas springs on their range of machines. They are used primarily
to hold open guards and machine assemblies to gain safe access during setting up or maintenance.
The guard or assembly will normally be interlock to the safety circuit to ensure the machine is in a
safe condition. They also hold these guards and assemblies closed during operations ensuring that
the safety circuit is not inadvertently triggered during operation of the machine. The picture below
shows a typical example where 2 gas springs are used to hold open a denest assembly.
To ensure the gas struts perform correctly routine inspection and maintenance of them and their
mountings should be carried out to ensure the machine is safe to operate. A failure of a gas spring
such could result in serious injury due to the weight of the
assembly. It is recommended that they are inspected weekly.
Maintenance Check list:
1. Check the mountings are secure.
2. Check the condition of the gas spring in particular:
The end fixings are in good condition
The gas spring is not leaking
The piston rod is straight an unmarked.
3. Check the gas spring fully extends and holds the guard open
securely.
If there is in any doubt about the condition of a gas spring it
should be replaced immediately.
Gas spring
Piston rod
End fixing
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