Skills Hub
equipment-service
Dehydration of Wet Systems
Remove moisture from a system contaminated with water.
About this skill
Dehydration of wet systems through extended vacuum holds or triple evacuation, with mandatory filter-drier replacement. Moisture in a refrigeration system causes acid formation and compressor failure.
10 total steps
3 critical steps
Time limit: 60 min
What graders are watching for
- 1Triple evacuation for severely wet systems
- 2Filter-drier must be replaced every time the system is opened
- 3Hold vacuum for 24 hours for severe moisture
Common mistakes (and how to avoid them)
- !Trying to dry out a saturated filter-drier (must be replaced)
- !Skipping the triple evacuation on a wet system
- !Charging before verifying the system holds vacuum
Practice this skill step-by-step
The static walkthrough above is the marketing overview. The full step-by-step interactive practice (with critical-step highlighting, per-step "why this matters" rationale, and what graders watch for on each individual step) is unlocked with a subscription.