Installation | 5
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Connection size(s):
– G2
Depending on the specific order, other connection dimensions may apply.
If the machine is used as part of a vacuum system:
• Busch recommends the installation of an isolation valve in order to prevent the oil
from flowing back to the vacuum system.
5.2.2 Discharge Connection
CAUTION
The discharge gas contains small quantities of oil.
Risk to health!
If air is discharged into rooms where persons are present:
• Make sure that sufficient ventilation is provided.
Connection size(s):
– G2
Depending on the specific order, other connection dimensions may apply.
• Make sure that the discharged gas will flow without obstruction. Do not shut off or
throttle the discharge line or use it as a pressurised air source.
Unless the aspirated air is discharged to the environment right at the machine:
• Make sure that the discharge line either slopes away from the machine or provide a li-
quid separator or a siphon with a drain cock, so that no liquids can flow back into the
machine.
5.2.3 Cooling Water Connection (Optional)
Water-oil heat exchanger without inlet accessories
WHE CWO CWI
CWO TV PS
WBV WF CWIWHE
Water-oil heat exchanger with inlet accessories
(Available for all ATEX classifications)
(Only available for ATEX classifications C andD )
CWI Cooling water inlet PSA Pressure switch
CWO Cooling water outlet WBV Water bypass valve
WHE Water-oil heat exchanger WF Water filter
TV Thermostatic valve
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