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iRubric: Adjusting superheat on a Thermostatic Expansion Valve rubric

iRubric: Adjusting superheat on a Thermostatic Expansion Valve rubric

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Adjusting superheat on a Thermostatic Expansion Valve 
Adjusting superheat on a Thermostatic Expansion Valve
Given an Air Conditioning system the student will use the proper tools and equipment to check and properly adjust the superheat on a TXV system. The student will access an operating system with a TXV and take correct superheat readings. After which the student will make correct adjustments as directed.
Rubric Code: RX32A33
By HVACTeacher
Draft
Public Rubric
Subject: Vocational  
Type: Project  
Grade Levels: (none)

Powered by iRubric TXV Adjustment
  Poor

Below Entry Level Industry Standards

10 pts

Fair

Approaching Entry
Level Industry Standard

20 pts

Good

Meets Entry Level
Industry Standards

30 pts

Excellent

Meets or Exceeds
Industry Standards

40 pts

Installation of Guages

Poor

Installation incorrect. At some point stops for directions. Shows No competency and needs assistance.
Fair

Installation is slow and halting. Question each step for teacher confirmation. Not sure
about correct order.
Good

Installation of guages is done with some hesitation, but correct
Minor questioning about procedures.
Excellent

Installation of guages is
done confidently, quickly, and with no assistance required.
Calculation of Superheat

Poor

After stabilizing unit troubled with procedure or math and cannot calculate the superheat without help.
Fair

After stabilizing the
system the student has procedure questions to get correct superheat.
Some supervision.
Good

After stabilizing the unit calculates the superheat with minimal errors. Little or no supervision.
Excellent

After stabilizing the
operation the student records an accurate superheat with no supervision.
Reseting The Superheat

Poor

Student does not remember proper steps in resetting. Takes supervision to get to correct setting.
Fair

The student has slow procedure and needs
some coaching to get to correct setting. CW/CCW overshoot/undershoot
Good

The student can make adjustments to TXV with
minimal questions or supervision. Arrives at correct setting.
Excellent

The student made accurate adjustments on the TXV as directed with no supervision. Gets correct setting.
Vocabulary

Poor

Student comprehends some points and cannot discuss well using the
corect terminology.
Fair

Comprehends major points only and can
discuss relatively well
with mixed terminology.
Good

Comprehends the assignment and can discuss it relatively
well using terminology.
Excellent

Student comprehends
the assignment and can discuss it well using the
industry terminology.



Keywords:
  • Expansion Valves

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