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According to EPA regulations, commercial and industrial units containing 50 pounds of refrigerants must be repaired when the leak rate is above _______ annually.
What will happen if the refrigeration system is not evacuated fully?
Compressor head pressure rises
According to EPA regulations, non-commercial air conditioner units containing 50 pounds of refrigerants must be repaired when the leak rate is above ___________ annually.
In the idle low pressure system, the lowest pressure that should be maintained is slightly above than _______
In a low pressure system, a leak will cause _______.
contaminants to leak in
What is the lowest access point on the low pressure centrifugal air-conditioning unit?
The evaporator charging valve
To recover refrigerant from low pressure equipment, the technician must be certified in _____.