Siemens SIMOTICS FD 1LH1 Operating Instructions & Installation Instructions page 71

1. With the "Piping" option, piping is attached on the right, left or top at the NDE. You can then
2. Use flexible water lines and hoses. This avoids mechanical stress at the connections as a
3. Only use valves, fittings and cooling water pipes made of rust-proof, stainless steel in the
4. Make sure that the cooling water complies with the required cooling water specification.
5. Make sure that the appropriate volume of cooling water is available.
6. Hold the hexagon coupler with an open-ended wrench while you screw in the water pipes.
7. Screw the cooling water pipes into the female thread. You can connect the inlet and outlet
See also
Coolant specification (Page 32)
Coolant specification (M85 "stainless steel version" option) (Page 34)
NOTICE
Bleed air from the cooling ducts
Adequate machine cooling cannot be guaranteed if the cooling ducts are not completely filled
with water. The machine can overheat.
● Vent the cooling ducts when filling. Completely fill the cooling ducts with water.
SIMOTICS FD 1LH1
Operating Instructions 01/2019
connect the coolant supply radially to the appropriate side.
Different threads are available depending on the machine type.
Machine type
1LH....-3A...-.... / 1MH....-3A...-....
1LH....-3B...-.... / 1MH....-3B...-....
1LH....-4A...-.... / 1MH....-4A...-....
1LH....-4B...-.... / 1MH....-4B...-....
result of the heat-dependent height increase of the machine (thermal expansion).
cooling system.
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.
5.5 Connecting the cooling water supply
Thread
G1/2"
G3/4"
Assembly
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