14.3
Changing the Compressor Oil
Refrigeration oil is of bright, transparent appearance even after extended operation. However, various conditions
of the system can affect the oil such as insufficient evacuation of the system on start up, dirt from the pipework on
installation and excessive discharge temperatures. Initial Oil type is stated on the serial plate, for alternatives refer
to Hubbard Technical.
When the oil is seen to be in an unclean condition it should be changed to avoid consequential compressor
damage.
14.4 Changing a Compressor.
These instructions may be supplemented by additional reference material provided.
ATTENTION
Please ensure all w ork carried out is in accordance w ith your companies working
practices and that the required equipment/ PPE is available and used.
WARNING
Pipew ork associated with the condenser w ill be at extreme temperatures.
WARNING
Ensure condenser electrical supply is fully isolated and locked off prior to w orking on
unit.
Should the need arise to change a compressor the following sequence should be followed:
Electrical
1. Turn off the power and control circuit of the compressor to be removed and attach a notice to the panel stating
that work is being carried out on the equipment.
2. Disconnect the wires from the compressor terminals taking note of the position of each cable.
3. Remove the conduits and cable from the terminal box.
Mechanically Isolate the Compressor
4.
Undo any pipe clamps of pipework running to the compressor.
Page 21 of 172
Copyright HPL March 2021
P4114S Rev 03
Содержание Hubbard GCU2040PXB1
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Страница 44: ...4 Wiring Schematics Model GCU2040PXB1 Part Number D4155S Page 44 of 172 Copyright HPL March 2021 P4114S Rev 03...
Страница 49: ...6 Carel PR300T CO2 Controller manual Page 49 of 172 Copyright HPL March 2021 P4114S Rev 03...
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Страница 161: ...8 PRESSURE ENTHALPY DIAGRAM FOR R744 REFRIGERANT Page 161 of 172 Copyright HPL March 2021 P4114S Rev 03...
Страница 165: ...9 Commissioning Form Page 165 of 172 Copyright HPL March 2021 P4114S Rev 03...