Equipment Operation & Maintenance Flashcards
7 cards from real CPT 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 Operation & Maintenance flashcards as text
A prosthetic technician notices the oven used for thermoplastic forming is heating unevenly across the chamber. What is the most likely cause?
Answer: Failed or misaligned heating element
Uneven heat distribution in a lab oven typically indicates a burned-out or misaligned heating element that must be replaced.
When checking the alignment of a prosthetic knee joint using a plumb line, what does the plumb line represent?
Answer: The vertical gravitational reference line
A plumb line represents the true vertical defined by gravity, used as a reference to assess prosthetic alignment.
Which type of saw blade is recommended for cutting rigid thermoplastic sheets used in prosthetic fabrication?
Answer: Fine-tooth blade with low set
Fine-tooth blades with low set minimize chipping and cracking when cutting rigid thermoplastics.
Before laminating a prosthetic socket, what preparation must be performed on the test socket or positive mold surface?
Answer: Apply a release agent or PVA film to allow removal
A release agent or PVA film is applied to prevent the laminate from permanently bonding to the mold.
What does a pH imbalance in the water bath used for low-temperature thermoplastic activation indicate?
Answer: Contamination from materials that could affect plastic properties
pH imbalance signals contamination that can affect thermoplastic softening characteristics and must be addressed by changing the water.
Which action extends the service life of a heat gun used for spot heating of thermoplastic components?
Answer: Allowing it to cool on a low or cool setting before storage
Allowing the heat gun to cool at a low or cool setting before storage prevents heat damage to internal components and extends service life.
An alignment laser used for static prosthetic alignment must be validated against what type of reference?
Answer: A calibrated plumb line or optical reference standard
Laser alignment tools must be validated against a calibrated plumb line or optical standard to confirm their beam is truly vertical or horizontal.