Commissioning | 7
Instruction Manual COBRA NC 0100-0300 B ACV_EN_en
27 | 48
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After a few minutes of operation, perform an Oil Level Inspection [
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After a few minutes of operation, perform a Cooling Liquid Level Inspection [
As soon as the machine is operated under normal operating conditions:
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Measure the motor current and record it as reference for future maintenance and trouble-
shooting work.
7.1
Conveying Condensable Vapors
The machine, equipped either with a gas ballast valve or a dilution gas system, is suitable for the
conveyance of condensable vapors within the gas flow.
If condensable vapors are to be conveyed:
START
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Open the gas ballast valve* or the dilution gas system* (solenoid valve)
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Warm up the machine
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Wait 30 minutes
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Open the inlet valve
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Perform the process
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Close the inlet valve
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Wait 30 minutes
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Close the gas ballast valve* or the dilution gas system* (solenoid valve)
END
* optional accessories
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Continuously drain condensate from the condensate drain plug (CD) of the silencer (SI) (Optional).
7.2
Liquid Flushing Procedure
Liquid flushing of the machine is recommended only if the machine is equipped with oil lubricated
mechanical seals on both sides.
If after the application process a liquid flushing is required:
START
●
Reduce the motor speed to 10 Hz (minimum admissible frequency) with the inlet valve closed
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Open the liquid flushing device (solenoid valve)
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Adapt the flushing liquid flow according to the application requirements
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The flushing duration depends on the application
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Close the liquid flushing device
END
7.3
Gas Purging Procedure
The machine can be optionally equipped with a purge gas system.
If after the application process a gas purge is required, i.e. after a liquid flushing sequence or to ren-
der the compression chamber inert:
START
●
Close the inlet valve
●
Open the purge gas (solenoid valve)
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The flushing duration depends on the application (minimum 200 seconds to render the ma-
chine inert)
●
Close the purge gas
END
