7.2
AFTER 40 HOURS OF
OPERATION/ EVERY WEEK (1-SHIFT
OPERATION)
LINERS
Observe the wear of the liners. The reason for
uneven wear of the liners might be an incorrect
feed to the crusher. In that case the feed
arrangement should be modified. See further
instructions in chapter 4.5.
The wear of the liners can be checked by the
distance between the mantle tightening nut and
the bottom of the top bearing housing. With
new liners the distance "A" is about 165 mm
(6-1/2"). The liners must be replaced latest
when the distance "A" is 5 mm (3/16") or
distance"B" is less than 3 mm (1/8") (there
must always be a gap) (figure 7.2.1), or
da m ag e m ay r esu lt . See chapt er 8.
"Replacement of liners".
LOWER FRAME ARMS
Open the inspection hatches of the lower frame
(3 pcs) and remove all stone chips and other
material jammed on the arms or slip ring. The
cleaning should be accomplished more often,
if there are roots, wires, bars etc. in the feed
material.
If there is any oil on the slip ring and the center
part of the frame, find out the reason and repair
it. At cold temperature the crusher may be so
cold, and the lubricating oil gets so cool and
stiff, that it does not have enough time to flow
down by the normal return channels, but floats
over the slip ring on the dust seal, and between
the dust seal and the slip ring on the center part
of the frame. The overflowing during a cold
start up can be prevented by starting the pumps
periodically a few times. Periods: pump
running for 10 s, pause for 30 s. etc.
V-BELTS
Check the tension and wear of the V-belts.
Tighten as needed or replace as a set. If
necessary see the tightening instruction in
chapter 4.7.
WHOLE CRUSHER
Examine the overall condition of the crusher
(the tightness of bolts, leakages, wear, possible
b re ak ag es, etc.). Repair any faults
immediately.
ELECTRICAL COMPONENTS
Check the condition of the electric cables and
components, to avoid breakages and abrasion.
Repair any faults immediately. Follow the
electrical safety and inspection regulations.
Figure 7.2.1 The liners must be replaced
latest when distance "A" is 5 mm (3/16") or
distance "B" is less than 3 mm (1/8")
GP200S
Periodical maintenance
7-2
140548
12/99