Difference between revisions of "Annual guillotine checks"
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To ensure continuous reliability, it is essential that the following procedure should be carried out at each annual guillotine check: | To ensure continuous reliability, it is essential that the following procedure should be carried out at each annual guillotine check: | ||
| − | + | *Cut cable with bolt cutters and withdraw through paying on gear | |
| − | + | *Hands clear! | |
| − | + | *Operate guillotine | |
| − | + | *Check clearance between closed guillotine blades (should be < 0.005" or 0.013 mm). (Blade clearance may be adjusted by re-shimming.) | |
| − | + | *Support paying-on gear and remove six nuts and bolts | |
| − | + | *Remove paying on gear | |
| − | + | *Remove assister springs | |
| − | + | *Remove guillotine actuating pivot bolt | |
| − | + | *Remove four bolts securing cable guide | |
| − | + | *Remove remaining four bolts securing guillotine blade retaining slides | |
| − | + | *Carefully withdraw moving blade and coaxial spring assembly - take care with compressed springs | |
| − | + | *Clean all detritus from mechanism and springs | |
| − | + | *Clean and inspect all metal surfaces | |
| − | + | *Check guillotine blades for damage and repair/replace if necessary | |
| − | + | *Lubricate springs and sliding surfaces with lithium based grease | |
| − | + | *Replace everything but the paying in gear in reverse order. (The moving blade is replaced in a similar way to that used to load the guillotine) | |
| − | + | *Load guillotine | |
| − | + | *Thread two pieces of cable through the guillotine assembly | |
| − | + | *Hands clear! | |
| − | + | *Fire guillotine - should cut two wires cleanly | |
| − | + | *If OK - replace paying in gear and sign off | |
| − | |||
| − | |||
Equipment required: | Equipment required: | ||
Revision as of 15:35, 19 May 2017
To ensure continuous reliability, it is essential that the following procedure should be carried out at each annual guillotine check:
- Cut cable with bolt cutters and withdraw through paying on gear
- Hands clear!
- Operate guillotine
- Check clearance between closed guillotine blades (should be < 0.005" or 0.013 mm). (Blade clearance may be adjusted by re-shimming.)
- Support paying-on gear and remove six nuts and bolts
- Remove paying on gear
- Remove assister springs
- Remove guillotine actuating pivot bolt
- Remove four bolts securing cable guide
- Remove remaining four bolts securing guillotine blade retaining slides
- Carefully withdraw moving blade and coaxial spring assembly - take care with compressed springs
- Clean all detritus from mechanism and springs
- Clean and inspect all metal surfaces
- Check guillotine blades for damage and repair/replace if necessary
- Lubricate springs and sliding surfaces with lithium based grease
- Replace everything but the paying in gear in reverse order. (The moving blade is replaced in a similar way to that used to load the guillotine)
- Load guillotine
- Thread two pieces of cable through the guillotine assembly
- Hands clear!
- Fire guillotine - should cut two wires cleanly
- If OK - replace paying in gear and sign off
Equipment required:
Feeler gauges
Metric socket set and spanners
Releasing oil and small scraper/rags to clean mechanism and slides
Lub grease
Guillotine setting lever and pivot board.
