SOP-MECH-003
REV 2.4
DISTRIBUTOR SYNCHRONIZATION
Mechanical Geometry & Guide Vane Alignment Protocol
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THE "ONE-VANE" CATASTROPHE
If just ONE guide vane is misaligned (e.g. Vane #4 is at 25° while others are at 20°), it acts as a "flow disturber", creating a massive turbulent vortex.
This vortex hits the runner blades cyclically, leading to localized cavitation and
shaft fatigue.
SYNCHRONIZATION SPECS
| Parameter | Specification | Method |
|---|---|---|
| Sync Tolerance | ± 0.5 mm | Opening difference between vanes |
| Vertical Sealing | 0.00 mm (Light-Tight) | Feelers / Light Test at 0% |
| Linkage Play | < 0.10 mm | Dial indicator on lever |
THE LIGHT TEST
Execute at 0% closure. Darkness required in runner chamber; high-power LEDs in spiral case.
If light is visible as a beam, the gap is > 0.2mm. ADJUSTMENT
REQUIRED.
SHEAR PIN CHECK
If a shear pin breaks, the vane becomes "free-floating". It will flutter violently.
ACTION: Immediate emergency shutdown. A floating vane will destroy the
runner.