Equipment Maintenance Flashcards
7 cards from real GMI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Equipment Maintenance flashcards as text
A technician notices that a web-fed press is experiencing web breaks near the infeed. Which maintenance item is the most likely root cause?
Answer: Worn or misaligned infeed nip rollers causing uneven web tension
Worn or misaligned infeed nip rollers create uneven tension across the web width, leading to stress concentrations and web breaks at the infeed section.
When performing maintenance on a hot-air dryer in a web offset press, what safety step must be completed before inspection?
Answer: Lock out/tag out the gas supply and allow the dryer to cool completely before entry
LOTO procedures require isolating the gas supply and allowing full cool-down before entering or inspecting hot-air dryer components to prevent burns and ignition hazards.
What does a rising trend in motor amperage draw on a printing press indicate during predictive maintenance monitoring?
Answer: Increasing mechanical resistance due to bearing wear or lubrication failure
Rising amperage trend on a press motor signals increasing mechanical resistance, commonly caused by bearing wear or lubrication breakdown, indicating imminent failure.
A digital toner-based press shows a repeating defect at a fixed interval on every print. What is the most efficient way to identify which component is responsible?
Answer: Measure the defect repeat interval and match it to the circumference of press components
Repeating defects at fixed intervals correspond to the circumference of a specific rotating component (drum, roller, or belt), allowing precise identification by measurement.
During maintenance of a UV inkjet press, the UV lamp output is tested and found 20% below the manufacturer's minimum specification. What is the correct action?
Answer: Replace the UV lamp immediately to restore proper ink cure
Under-powered UV lamps produce under-cured ink that fails adhesion and scratch resistance standards; lamp replacement is the only compliant corrective action.
What is the primary reason for tracking Mean Time Between Failures (MTBF) for graphic arts equipment?
Answer: To schedule preventive maintenance intervals and predict when components are likely to fail
MTBF data allows maintenance teams to schedule preventive maintenance before failures occur, reducing unplanned downtime and production losses.
A flexographic press plate is showing premature wear after only a fraction of its expected run length. Which of the following is the most likely cause?
Answer: Ink pH that is outside the recommended range for the plate material
Ink pH outside the recommended range chemically attacks photopolymer plate material, causing swelling or degradation that dramatically shortens plate life.