ABSTRACT
The rehabilitation and repair of
a faulty air conditioner was the project undertaken by the group of student
listed above in the mechanical Engineering department.
Before embarking
on the project, the following fault were detect and rectified, such as
(a)
Blockage of the condenser by impurities
(b)
Undersized compressor
(c)
Poor capacitance of the capacitor
(d)
Bad plug and
(e)
Drier strainer was also blocked by impurity.
These
factors leads to the total breakdown of the air conditioning system. It was checked detected and rectify by some
basic instrument which were replaced with a new one.
According
to the state of the air conditioning system, we carried out a breakdown
maintenance on it, and as a result of its cost of product a preventive
maintenance was employed.
In conclusion, we
arrived at the state of putting the system in a satisfactory condition to serve
its purpose in a long-term run.
And lastly, we
recommend the maintenance department to keep the machine in a good operating
condition by applying some of the lubricating oil listed overleaf to enable a
durable performance of the air conditioning system.
TABLE
OF CONTENT
Title page
Letter of transmittal
Approval page
Dedication
Acknowledgement
Abstract
CHAPTER ONE
1.0
Introduction
1.1 Literature
CHAPTER TWO
2.0
Analysis of the air conditioning cycle
2.1 Air
conditioning maintenance
2.2
Preparation for repair
2.3
Fault detection and repair
2.4
Precaution taken
2.5
The principle operation of air condition
2.6
Air condition Application
2.7
Component of air conditioner
2.8
Sequence of operation
2.9
Cost analysis
CHAPTER THREE
3.0 Conclusion
3.1
Recommendation
References
CHAPTER
ONE
1.0
INTRODUCTION
The rectification and repair of
an air conditioner in the mechanical Engineering Department in the institute of
management and Technology is a project undertaking for some basic reasons which
will in one way or the other be a benefits to the Department and also to us
such reasons on one hand stretches to the problems which necessitated the
project. While in the other hand to know
how much knowledge and skill the various students of this group here acquires
from the institute with respect to the project in terms of practical.
In respect of the problems of the
latter one; poor maintenance department to carry out such duties of putting the
system in other as a result of poor facilities, cost of affording a cause if
the system is not working during office period.
Also, we undertake such project
to create an ability to withstand the challenges faced outside in the field of
air conditioning and refrigeration and also in mechanical know how. At same instant, to restore preventive
maintenance in the department.
1.1 LITERATURE
REVIEW
air conditioning is a process
whereby heatrecieve from a low temperature region is transferred to a higher
temperature region. The negative net
work is being done in the system. Air
conditioning system has four basic components which are the compressor,
condenser, metering device and evaporator.
When any of these component is faulty or damaged it will cause the air
conditioning system not to function well or not functioning at all.
Nevertheless, the continuous
functioning of an air conditioning system doesn’t depend wholly on the
component, but the maintenance/servicing
aspect of it. Lack of such
maintaining or servicing practices brought about the breakdown of air
conditioning system. So on embarking on
the project i.e. Working on the air conditioning system faults were dictated by
the groups in the year 2005, assigned for the project.
1.
It
has low pumping capacity.
2.
The
drier strainer was not able to filter the gas pumped by the compressor as a
result of blockage by impurities.
3.
The
whole system was dirty, this is because
the air conditioner has been dumped for a very long time.
4.
The
capacitor are of poor capaciting property i.e. to store electrical current in
the compressor.
The compressor is the heart of
all air conditioning system. It pumps
the refrigerant to the whole system, the metering device or the expansion
valves meters a given quantity of refrigerant required for each unit.
In this case most of these
essential component of the air conditioner which are not of necessity to the
system needs not to be handled carelessly when it develop any fault and also
not to be handle by non expert in the field of air condition and refrigeration.
For instance a compressor that
has low pumping action was letter verified that it is suppose to be compressor
with horse power 2 not 1.5. this under
size compressor will not be able to accommodate the action of the air
conditioning system.
Again, the volume of air
conditioning gas being pumped was too negligible to bring about the desired
cooling.
The capacitors which were bad,
the drier which was blocked up by impurities was changed with a new one. As a result of causing poor cycling of a
refrigerant gas through the copper capillary of the air conditioner which we
repaire4d by replacement of the drier with new one. Through wee can still flush the drier and it
will still be in good form.
A repair and rehabilitation
equipment’s must be in good form to facilitate and enhance good and effective
rehabilitation. This equipment are used
to trace the fault in the air conditioning system. In the first place we use soap solution to
check leakage’s of the compressor, flushing the condenser with vacuum
pump. The compressor was tested, there
was no fault, only that the size was 1.5 horse power and they have opened the
compressor before and welded it, which is not advisable to do. The general clean up of all dust compacted
parts was done, particularly without any problem following by the changing of
the plug which supply electricity to the system.
The sequence of operation and
tools used during the repair is recorded in ascending other overleaf.
Get the Complete Project Material Now!!!
