To Access The Inner Parts Of The Condenser / Gas Cooler; Replacing A Compressor; Condenser Fins; Figure 36: Accessing The Inner Parts Of The Unit - Emerson Copeland Eazycool OMTE-90D-TFD Application Manuallines

5.1.4

To access the inner parts of the condenser / gas cooler

▪ The side panel can be removed only when the unit is turned off.
▪ To remove the side panel, unscrew the three screws located below the condenser first, then
unscrew all the remaining screws and remove the cover by lifting it off.

Figure 36: Accessing the inner parts of the unit

5.2

Replacing a compressor

CAUTION
Inadequate lubrication! Bearing destruction! Exchange the accumulator
after replacing a compressor with a burned-out motor. The accumulator oil
return orifice or screen may be plugged with debris or may become plugged.
This will result in starvation of oil to the new compressor and a second failure.
In the case of a motor burnout, most contaminated oil will be removed with the compressor. The rest
of the oil is cleaned using suction and liquid line filter driers. A 100% activated alumina suction line
filter drier is recommended but must be removed after 72 hours. It is highly recommended to
replace the suction accumulator, if the system contains one. This is because the accumulator
oil return orifice or screen may be plugged with debris or may become plugged shortly after a
compressor failure. This will result in starvation of oil to the replacement compressor and a second
failure. When a compressor is exchanged in the field, it is possible that a major portion of the oil may
still be in the system. While this may not affect the reliability of the replacement compressor, the extra
oil will add to rotor drag and increase power usage.
▪
De-energize the condensing unit before any intervention.
▪
Close valves to isolate the unit from the system.
▪
Recover the refrigerant from the unit and make sure that the compressor is not under pressure.
▪
Release the compressor mounting parts then lift it to replace with a new compressor.
NOTE: For more detailed instructions, please refer to the compressor application guidelines.
5.3

Condenser fins

CAUTION
Acid cleaning! Corrosion of condenser fins! Do not use acidic solutions to
clean the coil. After cleaning, the fins should be brushed lightly with a proper
fin comb.
NOTE: In order to meet the requirements of the Ecodesign Directive 2009/125/EC with regard
to efficient system operation, ensure the heat exchangers remain clean at all times.
Condenser fins become dirty over time as ambient air is induced to the condenser. Dirty coil surfaces
result in high condensing temperatures and poor unit performance. Regular cleaning is
recommended, the frequency of doing so being dependent on the installation and the surrounding
environment. As a general guide, it is advisable to do this at least once every two months.
36 C6.1.9/0219/E