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sid
18-08-2007, 07:26 AM
hi everyone
was just wanting a bit off help in making up some questions and answers for a small exam off 5 questions for my boss, so he can test people in interveiws.
be so greatful for your help

cheers sid

marc5180
18-08-2007, 11:14 PM
1) Name 3 symptoms of a blocked condensor
2) What is the function of the evaporator
3) What is superheat? and how/where to measure it
4 what should a system be vacuumed to
5 What is the purpose of the reversing valve

just some general ones that i can think of... Not to hard and pretty basic.
Hope this helps
Marc

Brian_UK
18-08-2007, 11:19 PM
I thought that most questions nowadays were something along the line of...

1. Done this before ?
2. Can you drive ?
3. When can you start ?
:)

marc5180
19-08-2007, 08:20 AM
I thought that most questions nowadays were something along the line of...

1. Done this before ?
2. Can you drive ?
3. When can you start ?
:)

True but i think making potential employees sit a simple test before they start would be a great idea

vijay_study
19-08-2007, 02:22 PM
Hi,

1. Three symptoms of blocked condensor.
a) Temperatures not achieved in the air conditioned area.
b). High discharge pressure drop leading to higher power consumption.
c) Tripping of compressor.

2. Function of evaporator.

Function of evaporator is to facilitate transfer of heat from the air conditioned area to the liquid refrigerant flowing inside the heat exchanger.

Regards

marc5180
19-08-2007, 03:41 PM
symptoms of a blocked condensor?

1) High suction pressure
2) incresed current draw
3) High head pressure
4) reduced efficency

Function of an evaporator?

to evaporte the liquid into a superheated vapour


What about questions 3,4 and 5?

Brian_UK
19-08-2007, 11:39 PM
I think the problem is that sometimes the person asking the questions is not always fully conversant with the answers.

It would perhaps be prudent to include one of the firms technicians somewhere in the interview process to get a 'feel' for the newcomer.

DEVITG
20-08-2007, 01:06 AM
Since 40 years at field service , the hard to know answer to new technician is.
Why the evaporator is full ice blocked if fan is run?

Why a part of a evaporator is part ice blocked.?

When a evaporator is full wet at the evaporators coil turns , and fins? What does it means?

Which is one of the main reason for a High pressostat trip , furthermore that it was an increase in discharge pressure , why it happens ?

Which are one of the most reason of faults?