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Z52 Practical > Reciprocating Chiller Practice Test Questions > Flashcards

Reciprocating Chiller Practice Test Questions Flashcards

1
Q

Where is the component on the compressor where you would charge when the oil level is low?

A

crankcase service valve compressor

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2
Q

Identify and select the stem you use to change the position on the discharge service valve of system 2.

A

discharge service valve stem compressor 2

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3
Q

On system 1 select the valve would you choose to recover refrigerant on the low side.

A

suction service valve compressor 1

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4
Q

What component would automatically pump down system 1 if it was disconnected from power.

A

system 1 solenoid valve

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5
Q

On compressor 1 select the component where the 3 phase 460 V enters the compressor.

A

compressor 1 peckerhead

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6
Q

Select the line immediately after the discharge service stop valve on system 2 where the refrigerant is in a totally vapor state.

A

discharge line compressor 2

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7
Q

On system 1 find the component which maintains superheat.

A

TXV 1.

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8
Q

Go to the navigation bar on the left and select the miscellaneous section. In the tool gang box there are two valves, select from the toolbar what you would use to change the position of these valves.

A

Serviceman’s wrench

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9
Q

Identify and select the flow switch on the closed loop system.

A

chill water supply line flow switch

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10
Q

On system 1 select the line that that the TXV bulb reads from

A

compressor 1 suction line

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11
Q

In system 1 identify and select the component that will display the level of refrigerant.

A

system 1 liquid line sight glass

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12
Q

Go to the navigation bar on the left and select chiller 3. What is the delta T of the chill water?
(FInd how to gind delta T of water)

A
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13
Q

Identify and select the “V” type compressor.

A

compressor 2

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14
Q

Identify and select the “W” type compressor.

A

compressor 2

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15
Q

On system 2 identify and select the high pressure transducer.

A

discharge service valve high pressure transducer compressor 2

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16
Q

Select from the toolbar which tool you would use to tighten up the packing on the refrigeration valves.

A

Crescent adjustable wrenches

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17
Q

Go to the navigation bar on the left and select chiller 3. Is compressor 2 an open type compressor

A

No

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18
Q

On system 1 select the component which has a power head assembly.

A

TXV 1

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19
Q

On system 1 from top to bottom find the component that visually shows the level of oil in the compressor.

A

compressor 1 upper oil sight glass AND THE Chiller 3 compressor 1 lower oil sight glass

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20
Q

On compressor 1 select the component where the 3 phase 460 V enters the compressor.

A

compressor 1 peckerhead

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21
Q

Select from the toolbar which tool you would use to tighten up the packing on the refrigeration valves.

A

Crescent adjustable wrenches

22
Q

What component would automatically pump down system 1 if it was disconnected from power.

A

system 1 solenoid valve

23
Q

Choose 2 tools from left to right if you will transport a refrigerant tank

A

Hand truck with chain and Protective cap

24
Q

Go to the navigation bar on the left and select the miscellaneous section. In the tool gang box there are two valves, select from the toolbar what you would use to change the position of these valves.

A

Serviceman’s wrench

(Serviceman’s wrench used to change position of all valves maybe)

25
Q

On system 1 find the component which maintains superheat.

A

TXV 1

26
Q

On system 2 the thermo bulb would be connected to what line?

A

compressor 2 suction line

27
Q

If chiller 3 system 2 suction pressure is 68.4 psig what is the saturation temperature in the evaporator?

A

40 F

Ask how to find saturation temperature from suction pressure.

Consult R22 temperature-pressure chart to find answer

28
Q

Locate and select the metering device for system 2.

A

TXV 2

29
Q

Which valve would you close to ensure no water enters into the condenser being fed from the cooling towers.

A

condenser water supply valve

30
Q

Which valve would you close to ensure no water exits the condenser and returns to the cooling towers.

A

condenser water return valve

31
Q

On system 1 find the component where it can be seen if the refrigerant is flashing off.

A

system 1 liquid line sight glass

32
Q

Locate and identify the component that gets rid of the heat that the system picked up on system 1.

A

system 1 condenser

33
Q

On system 2 select and identify the component known as the heart of the system and separates the high side and the low side

A

compressor 2

34
Q

In system 1 identify and select the component that will display the level of refrigerant.

A

system 1 liquid line sight glass

35
Q

On system 1 select the piping that normally has 8 to 10 degrees superheated refrigerant while the compressor is running

A

compressor 1 suction line

36
Q

On system 1 select the valve would you choose to recover refrigerant on the low side.

A

suction service valve compressor 1

37
Q

On compressor 2 select the refrigerant valve that does not have a service port.

A

crankcase service valve compressor 2

38
Q

On compressor 1, select the component that will assist the compressor to start efficiently and under a low load?

A

compressor 1 cylinder unloader

38
Q

Go to the navigation bar on the left and select the miscellaneous section. Identify and select the 1/4 turn valve on the high side hose.

A

R-high side manifold hose 1/4 turn valve

39
Q

Go to the navigation bar on the left and select chiller 3. Go to the back view and locate and identify the liquid line sight glasses from top to bottom.

A

WRONG: Chiller 3 system 1 liquid line sight glass, clear, Chiller 3 system 2 liquid line sight glass, clear

RIGHT: Chiller 3 system 1 liquid line sight glass, Chiller 3 system 2 liquid line sight glass

40
Q

Go to the navigation bar on the left and select the miscellaneous section. Identify and select the 1/4 turn valve on the suction side hose.

A

R-low side manifold hose 1/4 turn valve

40
Q

Select and identify on system 2 what is known as the vapor pump.

A

compressor 2

41
Q

Go to the navigation bar on the left and select the miscellaneous section. In the tool box identify and select the valve which is back seated.

A

R-service valve back seated

42
Q

Identify and select the flow switch on the closed loop system.

A

chill water supply line flow switch

(Chill water side is the closed loop system I suppose)

43
Q

Locate the component that if PRV 1 or PRV 2 discharges will remove the refrigerant to the outside to avoid any harm to the engineers.

A

refrigerant vent line

44
Q

Locate and select the prime mover for system 2.

A

compressor 2

45
Q

On compressor 1, what component is used for capacity control.

A

compressor 1 cylinder unloader

46
Q

What is the vapor pump, and prime mover of the system?

A

The compressor

47
Q

on system 1 select the component which has a power head assembly.

A

TXV 1

48
Q

On system 1 what line with I.R. gun would you select to calculate for subcooling.

A

system 1 lower liquid line after the condenser

49
Q

On system 1 select the piping that carries low pressure low temperature superheated refrigerant.

A

compressor 1 suction line

50
Q

On system 1 select the line that that the TXV bulb reads from.

A

compressor 1 suction line

Z52 Practical (7 decks)

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