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Airide maintenance - construction, assembly and adjustment

Airides require minimum maintenance, but should still be inspected and adjusted or replaced periodically. The rubber can get hard and brittle and start to leak.

Fabric guiding - basic rules, guidelines and setup procedures

Guiding of all types of fabrics follows similar basic rules, guidelines, and setup procedures. Here are some of the most important ones…

Hydraulic power unit troubleshooting - symptoms, causes and fixes

Troubleshooting HPUs is easier when you evaluate the symptoms to determine root causes. These troubleshooting charts will help diagnose problems related to pumps, leaks, pressure, noise and heat.

Prevent problems by monitoring roll performance and conditions

When the machine is down, check rolls for: unusual wear or damage to the cover, fatigue-type cracking of the rubber and impact-types of cracks.

Know your OSHA and ANSI safety color codes for all hazards

Color coding is a brilliant safety idea because workers can tell at a glance - almost without thinking - that they’re facing a hazard and how bad that hazard is.

Press diaphragm problem causes work stoppage, a case study

A chronic press load/unload diaphragm rupturing problem crippled the operation of the press at a mill. Plate and diaphragm misalignment were only part of the problem. Further analysis pointed to nipping roll diameter changes and incorrect diaphragm specifications.

Speed increase creates suction roll bearing vibration, case study

Analysis of unusually high vibration levels from a suction roll back internal bearing pointed to a recent speed increase. Lubricant and a transducer helped.

Troubleshooting rope runs - the four most common problem areas

Rope runs can be complex, and a poorly designed run can decrease machine complexity. They should be assessed periodically to find and correct problem areas.

VacRoll suction holes and grooves should be cleaned regularly

VacRoll suction holes and the grooves of all rolls should be cleaned regularly, as they may get completely clogged due to web moisture, particularly at the start of the dryer section. Bearing housings also need attention. Proper handling of the rolls is also important.

Differential drive inspection - clutch, PIV, bearings and gears

The differential drive supplies power to the individual machine sections, and maintains a constant preset speed between those sections. The slightest speed difference between sections can result in a sheet break and lost production. Knowing the drive components and what to look for helps in preventive maintenance.