Archway COMPETITOR 130 Пошаговое руководство - Страница 5
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Печатать страницу17. Start rotating the core bit by engaging
the Right-hand lever on the control block.
19. Ensure that water is flushing the bit
continuously during coring. If water
circulation stops, remove the core bit from
the hole to prevent it becoming burnt out.
18. Lower the carriage fully using the Left-
hand lever on the control block so that its
weight is bearing down fully on the core
bit. Ensure that the nylon ring is in place
on the core bit to stabilize the bit in the slip
bowl. Adjust the speed of the engine until
you obtain maximum rate of penetration.
20. After cutting through the concrete raise
the carriage slowly and then stop the bit
rotating. Remove the concrete core and
detach the Coring unit from the rig.