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 | + | *Cut cable at first join with bolt cutters and withdraw through paying on gear |
*Hands clear! | *Hands clear! | ||
*Operate guillotine | *Operate guillotine | ||
| − | *Check clearance between closed guillotine blades (should be < 0.005" or 0.013 mm). (Blade clearance may be adjusted | + | *Check clearance between closed guillotine blades (should be < 0.005" or 0.013 mm). (Blade clearance may be adjusted using brass rubbing screws near bottom of blade guides.) |
*Support paying-on gear and remove six nuts and bolts | *Support paying-on gear and remove six nuts and bolts | ||
*Remove paying on gear | *Remove paying on gear | ||
| Line 11: | Line 11: | ||
*Remove four bolts securing cable guide | *Remove four bolts securing cable guide | ||
*Remove remaining four bolts securing guillotine blade retaining slides | *Remove remaining four bolts securing guillotine blade retaining slides | ||
| − | *Carefully withdraw moving blade and coaxial spring assembly - take care with compressed springs | + | *Carefully withdraw removing moving blade and coaxial spring assembly - take care with compressed springs |
| − | *Clean all detritus from mechanism | + | *Clean all detritus from mechanism especially any that could prevent full travel of guillotine blade |
*Clean and inspect all metal surfaces | *Clean and inspect all metal surfaces | ||
| − | *Check guillotine blades for damage and repair/replace if necessary | + | *Check guillotine blades for damage/cracking and repair/replace if necessary |
*Lubricate springs and sliding surfaces with lithium based grease | *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) | + | *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 using a lvere to compress the springs) |
*Load guillotine | *Load guillotine | ||
*Thread two pieces of cable through the guillotine assembly | *Thread two pieces of cable through the guillotine assembly | ||
| Line 22: | Line 22: | ||
*Fire guillotine - should cut two wires cleanly | *Fire guillotine - should cut two wires cleanly | ||
*If OK - replace paying in gear and sign off | *If OK - replace paying in gear and sign off | ||
| + | *If not detailed analysis will be required. | ||
Equipment required: | Equipment required: | ||
| Line 33: | Line 34: | ||
Lub grease | Lub grease | ||
| − | Guillotine setting | + | Guillotine setting equipment. |
Latest revision as of 15:42, 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 at first join 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 using brass rubbing screws near bottom of blade guides.)
- 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 removing moving blade and coaxial spring assembly - take care with compressed springs
- Clean all detritus from mechanism especially any that could prevent full travel of guillotine blade
- Clean and inspect all metal surfaces
- Check guillotine blades for damage/cracking 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 using a lvere to compress the springs)
- 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
- If not detailed analysis will be required.
Equipment required:
Feeler gauges
Metric socket set and spanners
Releasing oil and small scraper/rags to clean mechanism and slides
Lub grease
Guillotine setting equipment.
