4.4 Insufficient cooling water quality
NOTICE
Corrosion due to insufficient cooling water quality
The materials used in the cooler are selected to match the cooling water quality for which the
air-water cooler was ordered. The cooler cannot be simply used without taking any other
measures if other water conditions apply. 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
specifications.
● If the cooling water quality fails to satisfy the quality stated on the order, please contact
the Service Center.
● Please observe the recommended water quality in the operating instructions for the air-
water cooler.
NOTICE
Overheating of the machine as a result of additives in the cooling water
Additives 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.
See also
Service and Support (Page 121)
4.5 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.
See also
Connecting an external fan motor (Page 68)
Preparations for use
4.4 Insufficient cooling water quality
SIMOTICS HV M 1RN76308PR900CG0-Z
24 Operating Instructions 07/2018
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