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Inlet screens
B580-65-880 Issue G
6 Inlet screens
6.1 Description
Inlet-screens are factory-fitted to all new EXT pumps. If you have an EXT pump without an inlet-screen, we
recommend that you fit an inlet-screen for additional safety. The only exception to this is the main ports in the END
faces of split flow pumps. Plastic covers must be retained on these variants until ready to install to minimise the risk
of injury from impeller blades.
The inlet-screen prevents the entry of debris into the pump and also prevents people from coming into contact with
the blades if the pump is switched on when it is disconnected from your vacuum system.
6.2 Technical data
Note: Refer to the pump instruction manual for details of performance reductions when an inlet-screen is fitted.
6.3 Installation
6.3.1 Unpack and inspect
Remove all packing materials and protective covers and check the inlet-screen.
If the inlet-screen is damaged, notify your supplier and the carrier in writing within three days; state the Item Number
of the inlet-screen together with your order number and your supplier's invoice number. Retain all packing materials
for inspection. Do not use the inlet-screen if it is damaged.
Table 5 - Inlet-screens technical data
Mesh/ hole size
Screen
type
Pump models Pump inlet-flange sizes
Item
Number
1 mm hexagonal ISX EXT70/70H DN63 ISO-K, DN63CF B580-51-005
1 mm hexagonal ISX EXT70/250/250H/ 250M/255H/
255DX
DN100 ISO-K, DN100CF B580-51-001
1 mm hexagonal ISX EXT301/501 DN160 ISO-K, DN160CF B580-51-002
1.8 mm hexagonal ISDX EXT75DX DN63 ISO-K, DN63CF B722-40-860
2.5 mm hexagonal ISHX EXT555H DN160 ISO-K, DN160CF B777-00-058
1 mm hexagonal ISHX EXT555H DN160 ISO-K, DN160CF B777-00-059
2.5 mm hexagonal ISX EXT406PX DN100 ISO-K, DN100CF B756-40-813
2.5 mm hexagonal ISX EXT406PX DN160 ISO-K, DN160CF B760-21-806
2.5 mm hexagonal ISDX EXTPX Split flow chamber B760-61-812
2.5 mm hexagonal ISDX EXTPX Split flow chamber B760-53-812
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