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Preparations for use
4.6 Interlock circuit for the external fan motor
4.4
Ensuring cooling
Ensure that the machine is sufficiently cooled by the cooling air flow at the installation site:
● Ensure that the cooling air can flow in and out unobstructed. The full air flow provided by
● Make sure that the machine does not draw in the hot discharged air again.
● For machines with a vertical type construction with an air intake from above, ensure that
4.5
Risk of corrosion with inadequate coolant quality
Risk of corrosion with inadequate coolant quality
The materials used in the heat exchanger are selected to match the cooling water quality for
which the heat exchanger was ordered. It cannot necessarily be used under different water
conditions.
NOTICE
Danger of corrosion
If the cooling water quality is unsuitable, the air-to-water heat exchanger may suffer corrosion
and fail.
● The chemical composition of the cooling water must comply with the configuration
● If the cooling water quality fails to satisfy the quality stated on the order, please contact
● Please note the recommended water quality in the operating instructions for the air-to-
NOTICE
Cooling water additives
Additives in the cooling water for antifreeze or corrosion protection can have a negative impact
on the heat transporting properties. The machine can overheat. Only operate the machine
with the contractually agreed cooling water quality.
4.6
Interlock circuit for the external fan motor
Interlock circuit for the external fan motor
For machines with external fans, install an interlock circuit that prevents the main machine
being switched on if the external fan is not operational.
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the fan is only possible if air can freely enter the impeller. In the axial direction, ensure a
clearance of at least 1 x air intake diameter.
the air inlets are protected against the ingress of foreign bodies and water.
specifications.
the Service Center.
water heat exchanger provided in the Appendix "Additional documents".
SIMOTICS DC 1HS5
Operating Instructions 02/2016
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