True
When the defrost placing is chosen, the compressor operates.
(True or False)
True
R744 refrigerant is natural CO2
(True or False)
Both Technician A & B
Technician A says on R134a structures, you may no longer locate any proof of oil, despite a
leak, because the lubricant is water soluble, and will wash away.
Technician B says by no means use compressed air to leak take a look at or pressure check an
R134a machine.
Which technician is correct ?
Both Technician A & B
Technician A says when checking for a leak the usage of an Electronic Leak Detector, you take
a look at from the bottom to the pinnacle of the AC issue vicinity.
Technician B says most OEMS (original system manufacturers) advise the usage of an
Electronic Leak Detector.
Which technician is accurate ?
Both Technician A & B
Technician A says you could locate the refrigerant fee amount on a sticker beneath the hood.
,Technician B says the first-rate manner to make sure the air-conditioning device is properly
charged is to do away with all refrigerant from the system and reinstall the proper quantity of
refrigerant.
Which technician is correct ?
Technician B only
An Automatic Temperature Control system that uses a BCM (Body Control Module) is being
recognized on a 2008 vehicle the use of a test device.
Technician A says you need a computer laptop with software program to diagnose any of these
structures.
Technician B says you connect the experiment tool, turn on the ignition and use the menus to
locate your machine and assessments.
Which technician is accurate ?
Both Technician A & B
An ATC (Automatic Temperature Control) gadget is being diagnosed for a high air outlet
temperature.
Technician A says it's far possible for a malfunctioning ATC control system to prevent accurate
operation even when the refrigerant gadget is operating to specifications.
Technician B says you have to use a diagnostic scan device or pc pc to perceive ATC troubles.
Which technician is correct ?
Air hole
Which of the subsequent is the most vital dimension finished when replacing a compressor
seize?
A. Coil voltage drop
b. Coil Current (ampere) draw
c. Air hole
d. Coil resistance
,Broken compressor reed valve
All of the following should cause the excessive facet stress in an AC gadget to be higher than
regular, EXCEPT:
a. Refrigerant overcharge
b. Restricted condenser air drift
c. Restricted evaporator air go with the flow
d. Broken compressor reed valve
Technician A simplest
Technician A says the pressure sensor disengages the compressor while low stress is sensed
due to the fact low refrigerant glide should result in a lack of lubrication and capture the
compressor.
Technician B says air con structures the use of a multi-strain switch will show a information line
for machine stress at the experiment device DATA parameter listing.
Which technician is accurate ?
ND-eleven
Which of the following refrigerant oil is usually recommended for use in a hybrid electric
compressor?
A. ND-10
b. ND-11
c. ND-9
d. ND-eight
Technician A only
On a guide air conditioning gadget with out automatic manipulate, the compressor grab does
not operate.
Technician A says there may be a failed compressor thermal protector.
Technician B says there's an incorrectly adjusted temperature door.
Which technician is correct ?
, Clutch air gap
All of the subsequent should motive compressor force belt side wear, EXCEPT:
a. Clutch air hole
b. Bent mounting bracket
c. Damaged pulley
d. Worn pulley bearing
Sound can be heard whilst a compressor pulley engages and disengages.
All of the subsequent statements related to compressors with damper limiter pulleys are
accurate, EXCEPT:
a. The pulley is connected to the compressor shaft by means of spokes that spoil if the
compressor locks.
B. Sound may be heard while a compressor pulley engages and disengages.
C. If the pulley breaks, the compressor and the pulley are changed as a unit.
D. If the pulley breaks, the pulley freewheels on the compressor shaft.
Reuse same compressor oil
All of the following duties are done whilst replacing an AC compressor, EXCEPT:
a. Reuse all mounting brackets
b. Use new gaskets and seals
c. Use the same or equal compressor
d. Reuse equal compressor oil
Sealant is used to restore minor leaks.
All of the subsequent statements are correct concerning AC machine carrier, EXCEPT:
a. Use a Refrigerant Identifier
b. The carrier technician have to be AC licensed.
C. Contaminated refrigerants are NEVER launched to the surroundings.
D. Sealant is used to repair minor leaks.
Internal compressor damage
All of the subsequent issues are gift with a cracked AC compressor mounting plate, EXCEPT:
a. Drive belt wear
b. Internal compressor harm
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