Atlas Copco GA 45 VSD - Energy Recovery Maintenance

Instruction
book
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1904 0504 83 
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For references used consult section Energy recovery unit.
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Check if handle (V1) is totally turned in clockwise (energy recovery in use).
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Run the unit until warm. Stop the unit, switch off the isolating switch and close the air outlet valve
of the compressor.
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Depressurize the compressor and drain the oil by opening the drain valve on the oil separator
vessel. See
Oil and oil filter change.
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Resume oil change as described in section Oil and Filter Change in this book.
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The inserts (thermostats) must be replaced by new ones when abnormal function is noticed. Examples:
regulating temperature is not within the normal range, ER heat exchanger remains cold.
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If the temperature rise over the energy recovery system declines over a period of time with the same
basic working conditions, the heat exchanger should be inspected. To clean the oil side, soak the heat
exchanger in a degreasing solution. To remove scale formation in the water compartment, a proper
descaling process should be applied. Consult Atlas Copco.
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See section Reference conditions and limitations.
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Consult section Compressor data for the normal working pressure..
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Oil side 15 bar (217 psi)
Water side 10 bar (145 psi)
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The water inlet temperature of the energy recovery system
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The water outlet temperature of the energy recovery system
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The water inlet temperature of the energy recovery system
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The water outlet temperature of the energy recovery system
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The cooling water outlet temperature of the compressor