Siemens SIMOTICS FD 1LH1 Operating Instructions & Installation Instructions page 69

5. Hold the hexagon coupler with an open-ended wrench while you screw in the water pipes.
6. Screw the cooling water pipes into the female thread. You can connect the inlet and outlet
7. Ensure that the maximum permissible operating pressure does not exceed 6 bar.
See also
Coolant specification (Page 29)
Coolant specification (M85 "stainless steel version" option) (Page 31)
SIMOTICS FD 1LH1
Operating Instructions 04/2016
NOTICE
Damage to the pipe system
The hexagonal couplers are connected directly to the water pipes inside the machine.
Applying excessive torque when screwing in can damage the pipe system.
● Hold the couplers with an open-ended wrench while you screw in the water pipes.
● Avoid axial forces at the coolant connections.
as required.
– The permissible pressure drop is dependent upon machine type. The machine type is
stamped on the rating plate.
– The pressure drop increases when antifreeze is added.
Machine type
1LH....-3A...-....
1MH....-3A...-....
1LH....-3B...-....
1MH....-3B...-....
1LH....-4A...-....
1MH....-4A...-....
1LH....-4B.1.-....
1MH....-4B.1.-....
1LH....-4B.3.-....
1MH....-4B.3.-....
1LH....-4B.5.-....
1MH....-4B.5.-....
1LH....-4B.7.-....
1MH....-4B.7.-....
5.4 Connecting the cooling water supply
Flow rate ± 10 % Pressure drop for fresh water
[l/min]
40
40
60
60
60
80
80
Assembly
[bar]
1.0
1.2
1.1
1.2
1.2
1.2
1.2
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