BUSCH COBRA ATEX NC 0100-0300 B, Instruction Manual

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7 | Maintenance
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7.6.7 Procedure G
• Check that the solenoid valve changes state by electrical supply.
• Perform a visual inspection of the solenoid valve sealing by means of the flow meter in
order to ensure that the device is still gas tight.
7.6.8 Procedure H
• Check that the solenoid valve changes state by electrical supply.
• Perform a visual inspection of the solenoid valve sealing and ensure that there is no li-
quid leak.
7.7 Flame Arrester Maintenance
• Check and assess if a cleaning of the flame arresters is required (i.e. removing dust
and dirt).
• Check that the flame arresters do not show any signs of corrosion.
• Determine the flame arrester type according to the table below.
• Please refer to the flame arrester instruction manual (attached to the ATEX Accessories
Book) for detailed information in order to carry out a correct maintenance.
Machine type Flame arrester
Suction connection (IN)
Flame arrester
Discharge connection (OUT)
Supplier / size Reference Supplier Reference
NC 0100 B Cashco / DN50 3 x 0.3 IIB3 Cashco / DN50 3 x 0.3 IIB3
Cashco / DN80 4 x 0.5 IIB3
BS&B / DN50 930-S50.1 / 3 x 0.3 / e-vp BS&B / DN50 930-S50.1 / 3 x 0.3 / e-vp
BS&B / DN80 930-S80.1 / 4 x 0.5 / e-vp
NC 0200 B Cashco / DN50 3 x 0.3 IIB3 Cashco / DN50 4 x 0.3 IIB3
Cashco / DN80 4 x 0.5 IIB3 Cashco / DN50 5 x 0,4 0530 IIB3
BS&B / DN50 930-S50.1 / 3 x 0.3 / e-vp BS&B / DN50 930-S50.1 / 4 x 0.3 / eC-vp
BS&B / DN80 930-S80.1 / 4 x 0.5 / e-vp BS&B / DN50 930-S50.1 / 5 x 0.4 /
1 x 0530/ eC-vp
NC 0300 B Cashco / DN50 3 x 0.3 IIB3 Cashco / DN50 4 x 0.3 IIB3
Cashco / DN80 4 x 0.5 IIB3 Cashco / DN50 5 x 0,4 0530 IIB3
BS&B / DN50 930-S50.1 / 3 x 0.3 / e-vp BS&B / DN50 930-S50.1 / 4 x 0.3 / eC-vp
BS&B / DN80 930-S80.1 / 4 x 0.5 / e-vp BS&B / DN50 930-S50.1 / 5 x 0.4 /
1 x 0530/ eC-vp