PRONAR VMP-10, Manual, Page: 70 / 78

5.18
ATTENTION
When entering the tank you must exercise special care.
Entering the tank is allowed with use of two ladders, it is forbidden to use platform or
else chute window.
Entering the tank is allowed with the machine fully immobilized.
5.11 CUTTING BLADES DISASSEMBLY
Depending on mode of operation of the feed car, cutting blades need to be sharpened,
adjusted or else replaced, after particular period of time. Life-time of cutting blades may be
significantly shortened in following cases:
•
using high rotational speeds of the worm,
•
setting blades in (C) position, shown on figure ( 5.9A ),
•
presence of foreign bodies in feed bulk (sand, stones, etc.)
Stones that got into the tank by mistake may damage blades, which later on are qualified to
be replaced (bends, cracks, jags). Presence of sand if foodstuff is a reason of faster wear of
blades, which can be further used provided that they will be conditioned. In nominal working
conditions of the worm and without foreign material in the feed bulk, life-time of blades is
about 500 hours.
If there is a necessity of dismantling or installing blades, one must enter the tank.
Disassembling blades consists in following:
•
unscrew 3 nuts M20 and take washers off – joint (4),
•
unscrew 1 bolt M20x55 and take washers off – joint (3),
•
dismantle blade (1) along with bottom plate (2),
•
joining elements must be screwed tight in same places, this will secure them against
getting lost,
•
unscrew blade from bottom plate - 2 boltsM10x35 and nuts M10 – joint (5).
Assembling procedure ought to be performed in reverse order. Nuts and bolts must be
screwed by applying appropriate force. It is possible to get to blades installed in bottom of the
worm through chute window. Dismantling procedure was shown on figure (5.8A).