Wexxar WF-10T, Operation And Service Manual

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WF-10T Case Former Machine Maintenance
9-87
Table 30: Cylinders not moving
Problem Cause Solution
Compressed air
not connected
Connect air supply.
Mechanical Jam Clear mechanical jam.
Socket loose Tighten socket.
Open Circuit
Cable broken Replace cable.
Overheating /
Too cold Usual cause is high
ambient temperature When ambient temperature is over
40F or below 0° centigrade.
Auto drain of the Filter-
Regulator is not working;
water accumulated in the
cup is not discharged
Drain water in the filter cup and fix the
auto drain valve or replace the filter
cup.
Water
Condensation
Too much water in the
air supply Dry the air before it enters the
machine.
9.6
Corrugated Case Quality Troubleshooting
Corrugated case quality is a major contributor to smooth machine operation and output quality.
The following points will help determine if you have a case size or quality problem:
1.
Case dimensions.
Using the right size of case and weight of material can often result in cost
savings.
2.
Score (fold) lines.
Make sure that the scores in all of your cases are as well defined as
possible in order to help with the automatic folding process.
This is one of the most common
causes of poor case closing performance.
Your corrugated case supplier can help make sure
that the correct pressure is applied during case scoring for your case specification.
3.
Corrugated case weakness.
The case manufacturing process can damage the fluted
construction of corrugated board
.
Store flat cases in dry conditions and on a flat surface. Be
careful not to stack excessive weight on cases, as crushing of the flutes will result.
Points to watch for include:
a. Overall crushing of the corrugated flutes, causing the case to have a ‘soft’ and limp feeling.
This condition results in poor machine handling and may not give your product the required
protection.
b. Selective bands of crushing, usually parallel to the case flutes, can cause failure lines
down the case and result in poor machine performance.
4.
Case ‘squareness’.
Check the corner joint where the manufacturer glues the flat case
together; it can often be out of alignment, making the case wider at one end than the other, or
twisted from end to end. It can also cause machine jams and poor quality case sealing.
5.
Flap corner slots.
Corner slots should be as wide as possible so that the flaps can be
manually or automatically folded with a minimum of interference.
6.
Flaps overlap or are gapped (major flaps).
Overlapping flaps are a result of incorrect flap
lengths. Fold a case by hand to verify that flaps meet neatly at the center.