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Preparations for use
Good planning and preparation of machine applications are essential in terms of keeping
installation simple and avoiding errors, ensuring safe operation, and allowing access to the
machine for servicing and corrective maintenance.
This chapter outlines what you need to consider when configuring your plant in relation to this
machine and the preparations you need to make before the machine is delivered.
4.1
Safety-related aspects to consider when configuring the plant
A number of residual risks are associated with the machine. These are described in the chapter
titled "Safety information" (Page 13) and in related sections.
Take appropriate safety precautions (covers, barriers, markings, etc.) to ensure the machine
is operated safely within your plant.
4.2
Observing the operating mode
Observe the machine's operating mode. Use a suitable control system to prevent overspeeds,
thus protecting the machine from damage.
4.3
Cooling water quality
● The cooling water must circulate in a closed cooling circuit.
● Avoid fluctuations in the oxygen content of the cooling water.
● The cooling system is maintenance-free provided cooling water of the specified quality is
Cooling water specification
Characteristic
pH
Conductivity
SIMOTICS HT Series HT-direct 1FW4...1......A
Operating Instructions 11/2018
used.
Note
Order-specific agreements
Observe any order-specific agreements regarding the cooling water specification. These
might deviate from the named cooling water specification.
Specified as
Measured value
7.5 - 10
<600 µS/cm
German unitary proce‐
dure
DIN 38404-5 (Z)
DIN 38404-8 (Z)
4
Currently
ISO / alterna‐
tive
ISO 10523
ISO 7888
27
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