(ATP) Accredited Tier Professional Certification (Cooling & Refrigeration) Practice Test
(ATP) Accredited Tier Professional Certification (Cooling & Refrigeration) ATP Maintenance & Troubleshooting Techniques
What is preventive maintenance?
Select your answer
A
Maintenance after a failure
B
Routine maintenance to avoid failures
C
Repairs after breakdowns
D
Only cleaning the system
Need a hint?